fac-Re(CO)3-based organometallic supramolecular coordination complexes using thiophene motif decorated flexible ditopic benzimidazolyl donor
Publication date: Available online 23 April 2018 Source:Journal of Organometallic Chemistry Author(s): Palanisamy Rajakannu, Bhaskaran Shankar, Malaichamy Sathiyendiran Thiophene/bithiophene units decorated flexible ditopic benzimidazolyl donors (Ln) were synthesized. Neutral, heteroleptic, dinuclear rhenium(I)-based organometallic supramolecular coordination complexes (SCC's) (1–4) were synthesized using Ln, Re2(CO)10 and tetrahydroxy-p-benzoquionone via one-step procedure. All the molecules were characterized by various methods. SCCs 1, 2 and 4 were further analyzed by X-ray analysis. All the ligands and the compl...
Source: Journal of Organometallic Chemistry - April 23, 2018 Category: Chemistry Source Type: research

A magnetic spin transfer NMR study of tertiary phosphine exchange in rhodium(I) complexes
Publication date: Available online 23 April 2018 Source:Journal of Organometallic Chemistry Author(s): Gertruida J.S. Venter Magnetic spin transfer NMR was used to investigate phosphine exchange reactions in complexes of the type [Rh(N,O-Bid)(CO)(PPh3)] (where N,O-Bid is a derivative of 4-(phenylamino)pent-3-en-2-onate, Phony−). Chlorido and methyl substituted rhodium phenyl β-enaminoketonato complexes, [Rh(2,6-Cl2-Phony)(CO)(PPh3)] and [Rh(2,6-Me2-Phony)(CO)(PPh3)], were chosen as study subjects allowing for a comparison of the influence of electronic properties on the rate of exchange. Moreover, a non-coordin...
Source: Journal of Organometallic Chemistry - April 23, 2018 Category: Chemistry Source Type: research

Synthesis and boron interaction of new amino acid containing phthalocyanines and the precursor
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Şükran Cenikli Başeren, Ali Erdoğmuş, Ahmet Gül A new phthalonitrile precursor with tyrosine substituent and the zinc phthalocyanine derived from it were synthesized and their interaction with diphenylborinic acid was studied. The new compounds were characterized by using elemental analysis, IR, 1H and 11B-NMR and UV-VIS spectral data. 11B-NMR data demonstrated that boron atom attached to the phthalonitrile precursor is in a bulky tetra-coordinated state with the formation of a coordinative N-B bond while complete...
Source: Journal of Organometallic Chemistry - April 23, 2018 Category: Chemistry Source Type: research

Synthesis, characterization and electrocatalytic H2 production of diiron complexes containing SeNC donors
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Jin-Ping Li, Yao-Cheng Shi The three-component reactions of ArNHC(=Se)OCH3, Et3N and Fe3(CO)12 afford the [Et3NH]+ salt of the (μ-ArN=COCH3)Fe2(CO)6(μ-Se-) cluster anion. The Se-centered cluster anion reacts with CH3I to give two pairs of isomers (μ-k2N,C-ArN=COR)Fe2(CO)6(μ-SeCH3) (1-e, 1-a, Ar = C6H5) and (μ-k2N,C-ArN=COR)Fe2(CO)6(μ-SeCH3) (2-e, 2-a, Ar = 4-ClC6H4). Furthermore, trapping the Se-centered cluster anion (μ-ArN=COR)Fe2(CO)6(μ-Se-) with PPh2Cl offers (μ-k2N,C-ArN=COR)Fe2(CO)6(&mu...
Source: Journal of Organometallic Chemistry - April 23, 2018 Category: Chemistry Source Type: research

Synthesis and ligand substitution of tri-metallic triply bridging borylene complexes
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Moulika Bhattacharyya, Rini Prakash, R. Jagan, Sundargopal Ghosh To build upon our earlier results of heterometallic metallaboranes employing metal carbonyls, we performed the reaction of nido-[(Cp*Rh)2B3H7] (1) (nido-1) with [M(CO)5·THF] (M = Mo or W) that yielded the trimetallic metallaborane clusters [(Cp*Rh)2M(CO)3(μ-CO)(μ3-BH)(B2H4)] (3: M = Mo; 4: M = W) having a capped borylene fragment and trimetallic triply bridging borylene complexes [(Cp*Rh)2(μ3-BH)(μ-CO)M(CO)5] (5: M = ...
Source: Journal of Organometallic Chemistry - April 23, 2018 Category: Chemistry Source Type: research

Synthesis of Pd(II) large dinuclear macrocyclic complex tethered through two dipyridine-bridged aza-crowns as an efficient copper-  and phosphine-free Sonogashira catalytic reaction
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Bahram Ghanbari, Leila Shahhoseini, Hadighehsadat Hosseini, Mojtaba Bagherzadeh, Agata Owczarzak, Maciej Kubicki For the first time the new 32-membered macrocyclic dinuclear palladium complex of two aza-crown macrocycles, bearing two pyridine arms, Pd2 L 2Cl4 was synthesized and characterized by elemental analysis, IR, NMR spectroscopy and single crystal X-ray diffraction methods. Pd2 L 2Cl4 was investigated as a moisture/air-stable catalyst for Sonogashira cross-coupling reaction in the absence of copper and phosphine ligand i...
Source: Journal of Organometallic Chemistry - April 23, 2018 Category: Chemistry Source Type: research

Tricarbonylrhenium(I) complexes with the N-methylpyridine-2-carbothioamide ligand – Synthesis, characterization and cytotoxicity studies
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Krzysztof Lyczko, Monika Lyczko, Sylwia Meczynska-Wielgosz, Marcin Kruszewski, Józef Mieczkowski A new series of tricarbonyl complexes of rhenium(I) in the ‘2 + 1’ system with the bidentate ligand N-methylpyridine-2-carbothioamide (NC5H4-CS-NH-CH3, LH(Me) NS) and a monodentate ligand, being either an anion (Cl, Br, I or SCN) or a neutral molecule (3,5-dimethylpyrazole (Hdmpz) or imidazole (Him)), was synthesized. The use of mixed ligands leads to the formation of neutral or cationic (in the form of ...
Source: Journal of Organometallic Chemistry - April 23, 2018 Category: Chemistry Source Type: research

Half-sandwich complexes of platinum group metals (Ir, Rh, Ru and Os) and some recent biological and catalytic applications
Publication date: Available online 16 April 2018 Source:Journal of Organometallic Chemistry Author(s): Joel M. Gichumbi, Holger B. Friedrich Half-sandwich complexes of the platinum group metals serve as excellent precursors and find many applications in biological and catalytic applications. This review focuses on the synthesis, biological and catalytic applications of half-sandwich complexes of iridium, rhodium, ruthenium and osmium reported over the last three years. For the catalytic applications the focus will be on catalytic oxidation and transfer hydrogenation. In addition, for biological applications the focus will...
Source: Journal of Organometallic Chemistry - April 22, 2018 Category: Chemistry Source Type: research

Highly effective and recoverable Pd(II) catalyst immobilized on thermally stable Schiff base polymer containing phenol group: Production, characterization and application in Suzuki coupling reactions
In this study, a novel highly efficient, recoverable, sustainable, and thermally stable Schiff base polymer-Pd(II) catalyst was designed for Suzuki coupling reactions in synthesis of biaryl compounds for the first time. Firstly, a novel Schiff base polymer containing phenol, Poly(4-((pyridine-2ylimino)methyl)benzene-1,3-diol) (P (4-PMB)), which was used as a support material in catalyst design, was synthesized in aqueous alkaline medium via oxidative polycondensation of 4-((pyridine-2-ylimino)methyl)benzene-1,3-diol (4-PMB) with NaOCl oxidant. The effects of oxidant concentration, polymerization temperature, and time on yi...
Source: Journal of Organometallic Chemistry - April 22, 2018 Category: Chemistry Source Type: research

Synthesis of highly fluorescent imidazole based diboron complex
Publication date: Available online 18 April 2018 Source:Journal of Organometallic Chemistry Author(s): Kunchala Dhanunjayarao, Vanga Mukundam, Ramu V. Ranga Naidu Chinta, Krishnan Venkatasubbaiah Novel imidazole based diboron complex (2) was synthesized and characterized by multinuclear NMR and single crystal X-ray analysis. The diboron complex showed red-shifted absorption and fluorescence with significantly higher molar absorption coefficient over our recently reported imidazole based monoboron complex (3). Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - April 22, 2018 Category: Chemistry Source Type: research

Mechanistic insights into the ligand-controlled regioselectivity in Cu-catalyzed terminal alkynes alkylboration
Publication date: Available online 19 April 2018 Source:Journal of Organometallic Chemistry Author(s): Qi Zhang, Mo Li, Jia-Qin Liu, Hai-Zhu Yu The recent Cu-catalyzed alkylboration of unactivated terminal alkynes shows intriguing ligand-controlled regioselectivity. The anti-Markovnikov alkylboration products were obtained with dppbz as ligand, while the Markovnikov products were obtained with DMAP as ligand. In the present study, the theoretical calculation was carried out to investigate the detailed mechanism of the alkylboration process and the mechanistic origin for the ligand-regulated regioselectivity. For both dppb...
Source: Journal of Organometallic Chemistry - April 22, 2018 Category: Chemistry Source Type: research

A practical synthesis of unsymmetrical triarylphosphines by heterogeneous palladium(0)-catalyzed cross-coupling of aryl iodides with diphenylphosphine
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Zhaotao Xu, Pingping Wang, Qiurong Chen, Mingzhong Cai The heterogeneous cross-coupling reaction of aryl iodides with diphenylphosphine was achieved in DMAc at 130 °C in the presence of 1.0 mol% of MCM-41-supported tridentate nitrogen palladium(0) complex [MCM-41-3N-Pd(0)] with KOAc as base, yielding a variety of unsymmetrical triarylphosphines in good to excellent yields. The turnover frequency (TOF) of the catalyst can reach 30.67 h−1. This new heterogeneous palladium(0) catalyst could easily be prepared by a si...
Source: Journal of Organometallic Chemistry - April 22, 2018 Category: Chemistry Source Type: research

Self-assembly and characterization of a 2D polymer containing hexanuclear 78-membered organotin macrocycles and a 1D right-handed helical organotin chain
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Fei-Fei Yan, Ru-Fen Zhang, Jing Ru, Chun-Lin Ma Two seven-coordinate organotin complexes, namely, [(Me2Sn) (μ-L) (4,4′-bipy)0.5(CH3OH) (DMF)]n (1) and [(Me2Sn) (μ-L) (1,10-phen)]n (2) (H2L = 6,6′-dithionicotinic acid, 4,4′-bipy = 4,4′-bipyridine and 1,10-phen = 1,10-phenanthroline), were synthesized in a 1:1:1 M ratio reaction of Me2SnCl2, 6,6′-dithionicotinic acid and different N-donor ligands. Both complexes have been characterized by elemental analysis, IR, PXRD, TGA, and X-r...
Source: Journal of Organometallic Chemistry - April 22, 2018 Category: Chemistry Source Type: research

Carbon monoxide substitutions by trimethyl phosphite in diiron dithiolate complex: Fe-Fe bond cleavage, selectivity of the substitutions, crystal structures and electrochemical studies
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Naouel Boukrina Makouf, Hénia Bouzidi Mousser, André Darchen, Abdelhamid Mousser The reaction of substitution of carbon monoxide by P(OMe)3 in the complex (μ-η2PhC(S) = C(S)Ph)Fe2(CO)6 1 under thermal activation afforded two colored compounds: a binuclear disubstituted complex (μ-PhC(S) = C(S)Ph)Fe2(CO)4 [P(OMe)3]2 2 and a mononuclear iron disubstituted complex (η2PhC(S) = C(S)Ph)Fe(CO)[P(OMe)3]2 3. Mass spectrometry, 1H NMR, IR and electrochemical studies established that two (CO) have b...
Source: Journal of Organometallic Chemistry - April 22, 2018 Category: Chemistry Source Type: research

Rectangular and hammock shaped ester functionalized chalcogenolato-bridged rhenium(I) tetranuclear metallacyclophanes
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): M. Karthikeyan, R. Govindarajan, Chowan Ashok Kumar, Udit Kumar, Bala. Manimaran Chalcogenolato-bridged ester functionalized rhenium(I) based rectangular metallacyclophanes [{(CO)3Re(μ-ER)2Re(CO)3}2(μ-pbin)2] (1, ER = SC4H9, 2, ER = SCH2C6H5, 3, ER = SeC6H5) and hammock shaped metallacyclophanes [{(CO)3Re(μ-ER)2Re(CO)3}2(μ-bpcpd)2] (4, ER = SC4H9, 5, ER = SCH2C6H5, 6, ER = SC6H5, 7, ER = SeC6H5) were obtained in one-pot reaction. The metallacyclophanes were synthesized by the reaction of ...
Source: Journal of Organometallic Chemistry - April 13, 2018 Category: Chemistry Source Type: research

Synthesis and characterization of ferrocene-based Schiff base and ferrocenecarboxaldehyde oxime and their adsorptive removal of methyl blue from aqueous solution
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Jamal Lasri, Abeer S. Elsherbiny, Naser Eltaher Eltayeb, Matti Haukka, Mohamed E. El-Hefnawy The ferrocene-based Schiff base 3 was synthetized by reaction of ferrocenecarboxaldehyde 1 with 4-aminoantipyrine 2. However, the reaction of 1 with hydroxylamine affords ferrocenecarboxaldehyde oxime 4. Compounds 3 and 4 were fully characterized by IR, 1H, 13C and DEPT-135 NMR spectroscopy, elemental analyses and also by single crystal X-ray diffraction. Compounds 3 and 4 were used to remove anionic methyl blue dye from wastewater. The...
Source: Journal of Organometallic Chemistry - April 9, 2018 Category: Chemistry Source Type: research

Effect of support on hydro-metathesis of propene: A comparative study of W(CH3)6 anchored to silica vs. silica-alumina
Publication date: 15 May 2018 Source:Journal of Organometallic Chemistry, Volume 863 Author(s): Mykyta Tretiakov, Manoja K. Samantaray, Aya Saidi, Jean-Marie Basset Hydro-metathesis of propene was carried out by using well-defined W(CH3)6 supported on silica and silica-alumina. It was observed that W(CH3)6 supported silica-alumina catalyst is much better (TON 4577) than the silica supported catalyst (TON 2104). We demonstrated that the present catalysts are much better than the previously reported (tantalum hydride/KCC-1, TON 786) catalyst. For the first time, we observed the formation of n-decane from propene, which enab...
Source: Journal of Organometallic Chemistry - April 7, 2018 Category: Chemistry Source Type: research

Zinc bis-pyrrolide-imine complexes: Synthesis, structure and application in ring-opening polymerization of rac-lactide
Publication date: 15 May 2018 Source:Journal of Organometallic Chemistry, Volume 863 Author(s): Alessandra Caovilla, Juliana S. Penning, Adriana C. Pinheiro, Frédéric Hild, Rafael Stieler, Samuel Dagorne, Osvaldo L. Casagrande, Marcelo P. Gil A series of bis-ligated zinc complexes with pyrrole-imine ligands were successfully synthesized and characterized by 1H and 13C{1H} NMR, and by X-ray crystallography for Zn1 and Zn3. These zinc complexes were used as catalysts for the ring-opening polymerization of rac-lactide in a toluene solution, under bulk conditions, in the presence and absence of benzyl alcohol. T...
Source: Journal of Organometallic Chemistry - April 5, 2018 Category: Chemistry Source Type: research

Alkyl-sulfur versus aryl-sulfur bond cleavage in tridentate alkylthiophenylazonaphthols by group 9 metal ions
Publication date: Available online 3 April 2018 Source:Journal of Organometallic Chemistry Author(s): Suvra Acharya, Pinaki Bandyopadhyay, Purak Das, Sachidulal Biswas, Achintesh Narayan Biswas The reactions of monoanionic tridentate alkylthiophenylazonaphthols featuring both C(sp3)–S and aryl C(sp2)–S bonds with low-valent group 9 metal compounds afforded monomeric metal complexes via either C(sp2)–S or C(sp3)–S cleavage. Rhodium(I) and iridium(I) selectively cleave C(sp2)–S bond of 2-hydroxy-1-(2′-alkylthiophenylazo) naphthalenes (HL1-HL5) and 1-hydroxy-2-(2′-alkylthiophenylazo)...
Source: Journal of Organometallic Chemistry - April 3, 2018 Category: Chemistry Source Type: research

Electron density analysis in (tetramethylcyclobutadiene)cobalt complex with charge-compensated dicarbollide [9-SMe2-7,8-C2B9H10] ligand
Publication date: Available online 3 April 2018 Source:Journal of Organometallic Chemistry Author(s): Konstantin A. Lyssenko, Igor L. Eremenko Using high-resolution X-ray diffraction investigation of the crystal of (η4-Me4C4)-4-Me2S-3,1,2-Co(C2B9H10) as well as DFT calculations, an analysis of electron density function in both crystal and isolated molecule was carried out. The results obtained allowed to find out the distinct features of chemical bonding of transition metal with C4Me4 and charge-compensated dicarbollide ligand. We have estimated the covalent contribution for the Co-B and Co-C bonds between Co and C2B3...
Source: Journal of Organometallic Chemistry - April 3, 2018 Category: Chemistry Source Type: research

Use of PS-Zn-anthra complex as an efficient heterogeneous recyclable catalyst for carbon dioxide fixation reaction at atmospheric pressure and synthesis of dicoumarols under greener pathway
Publication date: Available online 3 April 2018 Source:Journal of Organometallic Chemistry Author(s): Swarbhanu Ghosh, Paramita Mondal, Debasis Das, Kazi Tuhina, Sk. Manirul Islam A polystyrene functionalized Zinc anthranilic acid complex catalyst has been prepared. The PS-Zn-anthra complex has been characterized by EDX, Scanning electron micrographs (FE-SEM), FTIR spectra, UV–vis spectra and thermogravimetric analyses. A greener and novel methodology was considered for the production of dicoumarol derivatives utilizing PS-Zn-anthra complex as a Lewis acid catalyst, non-toxic, mild in H2O employing heteroaromatic/ar...
Source: Journal of Organometallic Chemistry - April 3, 2018 Category: Chemistry Source Type: research

Organogermanium compounds anchored on Pt/SiO2 as chiral catalysts for the enantioselective hydrogenation of 3,4-hexanedione
Publication date: 15 May 2018 Source:Journal of Organometallic Chemistry, Volume 863 Author(s): Virginia Vetere, María B. Faraoni, Julio C. Podestá, Mónica L. Casella This work reports the synthesis of PtGe chiral catalysts using organogermanium compounds containing (−)-menthyl groups as substituents. Chiral inducers were carefully synthesized and characterized in order to obtain optically pure compounds.PtGe catalysts were prepared through a controlled surface reaction between the supported transition metal and the organometallic compound. This technique leads to reproducible and well defined p...
Source: Journal of Organometallic Chemistry - April 1, 2018 Category: Chemistry Source Type: research

Group 4 metal complexes containing the salalen ligands: Synthesis, structural characterization and studies on the ROP of cyclic esters
Publication date: Available online 23 March 2018 Source:Journal of Organometallic Chemistry Author(s): Debashis Chakraborty, Bijja Rajashekhar, Mrinmay Mandal, Venkatachalam Ramkumar The synthesis of homoleptic salalen ligand supported group 4 complexes and their applications in the ring-opening polymerization (ROP) of ε-caprolactone (ɛ-CL) and lactide (LA) are described. All these complexes of type M(L)2 (LH = (E)-N-(2-(3,5-dibromo-2-hydroxybenzylideneamino)phenyl)-4-methylbenzenesulfonamide: M = Ti (1), M = Zr (4), M = Hf (7); LH = (E)-N-(2-(2-hydroxybenzylideneamino)phenyl)-4-methylbenzenesulfonami...
Source: Journal of Organometallic Chemistry - March 24, 2018 Category: Chemistry Source Type: research

Synthesis, aggregation-induced emission and mechanochromism of a new carborane-tetraphenylethylene hybrid
Publication date: Available online 23 March 2018 Source:Journal of Organometallic Chemistry Author(s): Yong Nie, Hao Zhang, Jinling Miao, Xiaoqing Zhao, Yexin Li, Guoxin Sun The condensation reaction of 1-amino-o-carborane with an aromatic aldehyde containing a tetraphenylethylene (TPE) moiety afforded an interesting carboranyl Schiff base compound 3, a new carborane-TPE hybrid, which has been characterized by various spectroscopic methods and its structure has been studied by X-ray crystallography and theoretical calculation. Compound 3 exhibits aggregation induction emission properties and a high quantum yield of approx...
Source: Journal of Organometallic Chemistry - March 24, 2018 Category: Chemistry Source Type: research

Synthesis of NN palladium complexes and six-membered CN palladacycles from 1-N- and 2-N-benzylindazoles
Publication date: Available online 21 March 2018 Source:Journal of Organometallic Chemistry Author(s): Ludmila A. Bulygina, Natalya S. Khrushcheva, Zinaida S. Klemenkova, Konstantin A. Lyssenko, Aleksander S. Peregudov, Viacheslav I. Sokolov The reaction of 1-N-benzylindazole (1) and 2-N-benzylindazole (1a) with Na2PdCl4 in MeOH afforded the NN coordinated complexes Pd(1)2Cl2 (2) as the only trans-isomer and Pd(1a)2Cl2 (2a) as the 1:1 mixture of cis and trans isomers. Direct palladation of 1 and 1a using Pd(OAc)2 in AcOH led to the corresponding μ-acetato-dimeric complexes (3 and 3a) with six-membered palladacycles as ...
Source: Journal of Organometallic Chemistry - March 22, 2018 Category: Chemistry Source Type: research

Iron sandwiched between group 13 analogues of N-Heterocyclic carbene: A theoretical investigation
Publication date: Available online 21 March 2018 Source:Journal of Organometallic Chemistry Author(s): Abhijit Boruah, Manash Protim Borpuzari, Ramananda Maity, Rahul Kar The present article discusses a theoretical possibility of a novel class of sandwiched organometallic compounds based on the group 13 analogues of N-Heterocyclic carbene. The structure, stability and bonding pattern of the Fe(NHE)2 complexes (where E = B, Al and Ga) have been studied using density functional theory. The bond dissociation energy and binding energy are comparable with ferrocene. In addition, the topological study of the electron densit...
Source: Journal of Organometallic Chemistry - March 22, 2018 Category: Chemistry Source Type: research

DNA, in  vitro antimicrobial/anticancer activities and biocidal based statistical analysis of Schiff base metal complexes derived from salicylalidene-4-imino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one and 2-aminothiazole
Publication date: 15 April 2018 Source:Journal of Organometallic Chemistry, Volume 861 Author(s): A. Palanimurugan, A. Kulandaisamy New mono cationic Cu(II), Co(II), Ni(II), VO(II) and Zn(II) Schiff base complexes have been designed and synthesized from salicylalidene-4-imino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one and 2-aminothiazole. The prominent structural features of synthesized compounds were studied by elemental analysis, UV–Vis., FTIR, 1H NMR, 13C NMR, EPR, Fluorescence emission, Powder XRD, FESEM and FAB-Mass spectral measurements. The IR, UV-Vis., spectra and magnetic susceptibility data of the complexes e...
Source: Journal of Organometallic Chemistry - March 22, 2018 Category: Chemistry Source Type: research

Synthesis, structure and in  vitro cytostatic activity study of the novel organotin(IV) derivatives of p-aminobenzenesulfonic acid
Publication date: 15 April 2018 Source:Journal of Organometallic Chemistry, Volume 861 Author(s): Ge-Hua Wen, Ru-Fen Zhang, Qian-Li Li, Shao-Liang Zhang, Jing Ru, Ji-Yuan Du, Chun-Lin Ma Four new p-aminobenzenesulfonate organotin complexes, [(n-Bu3Sn)(O3SC6H3-NH2-4)]n (1), [(n-Bu2Sn)4(O)2(OH)2(O3SC6H4-NH2-4)2] (2), [(Me2Sn)4(O)2(OH)2(O3SC6H4-NH2-4)2] (3) and [{(n-BuSn)12O14(OH)6}(O3SC6H4-NH2-4)2·3C4H8O2] (4·diox), were synthesized by reaction of p-aminobenzenesulfonic acid with tributyltin oxide, dibutyltin oxide, dimethyltin oxide and monobutyltin oxide, respectively. These complexes were characterized by e...
Source: Journal of Organometallic Chemistry - March 22, 2018 Category: Chemistry Source Type: research

Cyclopalladation of azobenzenes and their reactivity towards N-substituted imidazolidine-2-thiones and allied ligands: Synthesis, structures, spectroscopy and ESI-mass studies
Publication date: 15 April 2018 Source:Journal of Organometallic Chemistry, Volume 861 Author(s): Amanpreet K. Sandhu, Tarlok S. Lobana, Balkaran S. Sran, Geeta Hundal, Jerry P. Jasinski Reactions of palladium(II) chloride with azobenzene (azbH), p-methoxyazobenzene (mazbH) and 4, 4′-diethoxyazobenzene (deazbH) in methanol yielded halogen bridged dinuclear precursors [Pd2(κ2:C,N-L)2(μ-Cl)2] (here L = azb−, mazb− and deazb−). These precursors were further reacted with a series of N, S- donor thio-ligands, namely, 1,3-imidazolidine-2-thiones (imdzSH-NR; R = H, Me, Et, Prn, Bun, Ph), ...
Source: Journal of Organometallic Chemistry - March 22, 2018 Category: Chemistry Source Type: research

Solid-state conversion of thallium(I) coordination polymer nanoparticles with cubic cage units to an organometallic silver(I) coordination polymer
Publication date: 15 April 2018 Source:Journal of Organometallic Chemistry, Volume 861 Author(s): Zarin Moghadam, Kamran Akhbari, Anukorn Phuruangrat Solid-state structural transformation of three-dimensional Tl(I) coordination polymer nanoparticles with cubic cage Tl4O4 unit, prepared by sonochemical procedure, to three-dimensional organometallic Ag(I) coordination polymer nanostructures has been observed upon mechanochemical reaction of compound [Tl4 (μ8-B-4-hps)2]n (1), [H2B-4-hps = bis(4-hydroxyphenyl) sulfone] with AgNO3. During this conversion, compound 2 with higher symmetry in its unit cell is formed. Altho...
Source: Journal of Organometallic Chemistry - March 22, 2018 Category: Chemistry Source Type: research

Catalytic amination of benzyl alcohol using ruthenium cymene compounds containing bidentate N,O-donor ancillary ligands
Publication date: 15 April 2018 Source:Journal of Organometallic Chemistry, Volume 861 Author(s): Chi-Meng Hsiao, Yun-Fan Chen, Chia-Her Lin, Ching-Han Hu, You-Ru Cai, Jui-Hsien Huang A series of ruthenium-cymene derivatives subjecting [Ru(η6-cymene)Cl2]2 and substituted bidentate N,O donor precursors have been synthesized and characterized. Reacting [Ru(η6-cymene)Cl2]2 with two equivalents the lithium salt of phenyl keto-amine ligands LiL 1 ∼LiL 3 resulted in the formation of [Ru(η6-cymene)(L)Cl] (1–3). Similarly, the reaction between [Ru(η6-cymene)Cl2]2 and two equivalents of LiL 4 or NaL 5 aff...
Source: Journal of Organometallic Chemistry - March 22, 2018 Category: Chemistry Source Type: research

Selected ferrocenyl chalcones as DNA/BSA-interacting agents and inhibitors of DNA topoisomerase I and II activity
Publication date: 15 April 2018 Source:Journal of Organometallic Chemistry, Volume 861 Author(s): Eva Konkoľová, Jana Janočková, Pál Perjési, Janka Vašková, Mária Kožurková A series of four ferrocenyl chalcone derivatives (1-4) and one ferrocenyl non-chalcone derivative (5) were investigated with regards to their interactions with calf thymus DNA and bovine serum albumin (BSA). Study on the DNA/BSA interactive properties of complexes is one of the active subjects of bioorganic chemistry. It could provide fundamental data for developing potential therapeutic applic...
Source: Journal of Organometallic Chemistry - March 22, 2018 Category: Chemistry Source Type: research

Synthesis, characterization and reactivity of rare-earth metal amide complexes supported by pyrrolyl-substituted cyclopentadienyl ligand
Publication date: Available online 20 March 2018 Source:Journal of Organometallic Chemistry Author(s): Yunjie Luo, Jue Chen Amine elimination between rare-earth metal tris(amide) complexes Ln [N(SiHMe2)2]3 (THF)x and 1 equiv. of pyrrolyl-substituted cyclopentadienyl ligand C4H4NSiMe2C5Me4H was investigated. Reaction of C4H4NSiMe2C5Me4H and Ln [N(SiHMe2)2]3 (THF)x with small metals afforded the half-sandwich rare-earth metal bis(silylamide) complexes (C4H4NSiMe2C5Me4)Ln [N(SiHMe2)2]2 (Ln = Sc (1), Y (2)), while the same reaction using La [N(SiHMe2)2]3 (THF)2 isolated lanthanum mono-silylamide complex [C5Me4SiMe2N(SiHMe...
Source: Journal of Organometallic Chemistry - March 21, 2018 Category: Chemistry Source Type: research

Preparation of alkyltrifluoroborates via Matteson Hydroboration Method
Publication date: Available online 20 March 2018 Source:Journal of Organometallic Chemistry Author(s): David J. Zillman, Thomas E. Cole An efficient one-pot method for synthesis of simple alkyltrifluoroborate salts has been developed. Alkyldichloroboranes, prepared by the Matteson Hydroboration Method using in situ generated HBCl2, were esterified with 2-propanol, treated with aqueous KHF2 and isolated using standard procedures. The overall isolated yields were generally greater than 90% when fluoridation was conducted under nitrogen. In contrast, reactions using “open air” conditions showed oxidation and gave...
Source: Journal of Organometallic Chemistry - March 21, 2018 Category: Chemistry Source Type: research

Trapping of the N,C,N-chelated organobismuth(I) compound, [2,6-(Me2NCH2)2C6H3]Bi, by its coordination toward selected transition metal fragments
Publication date: Available online 20 March 2018 Source:Journal of Organometallic Chemistry Author(s): Iva Vránová, Tereza Dušková, Milan Erben, Roman Jambor, Aleš Růžička, Libor Dostál The in situ reduction of the N,C,N-chelated bismuth(III) chloride (ArBiCl2) (where Ar = 2,6-(Me2NCH2)2C6H3) with 2 M equivalents of K[B(s-Bu)3H] produced an unstable bismuth(I) compound ArBi (1) that was trapped by its coordination toward suitable transition metal fragments. Using this strategy a set of complexes with Group 6 metal carbonyls was obtained, i.e. [ArBiM(CO)5] (1-M; where M ...
Source: Journal of Organometallic Chemistry - March 21, 2018 Category: Chemistry Source Type: research

Synthesis, spectral- and theoretical study, x-ray analysis, and antiproliferative activity of 4,5-dihydrobenzoferroceno[1,2-d][1,2,3]selenodiazole and its benzo-fused analogue
Publication date: Available online 20 March 2018 Source:Journal of Organometallic Chemistry Author(s): Tibor Pasinszki, Dániel Dzsotján, Győző György Lajgut, Veronika Harmat, Andrea Bor, István Zupkó, Antal Csámpai Synthesis, structure determination, and in vitro antiproliferative effect of 4,5-dihydronaphto[1,2-d][1,2,3]selenadiazole (1) and 4,5-dihydrobenzoferroceno[1,2-d][1,2,3]selenodiazole (2) are presented. The synthesized molecules were characterized by NMR, IR, Raman, mass, and UV spectroscopies. The equilibrium structures of 1 and 2 were calculated using the B3LYP/6-31&nb...
Source: Journal of Organometallic Chemistry - March 21, 2018 Category: Chemistry Source Type: research

Intermolecular stabilization in new 2-iminopyridine derivatives complexes of Pd(II) and their reactivity towards alkenes
Publication date: Available online 20 March 2018 Source:Journal of Organometallic Chemistry Author(s): Manuel A. Escobar, David Moreno da Costa, Oleksandra S. Trofymchuk, Constantin G. Daniliuc, Francisco Gracia, Fabiane M. Nachtigall, Leonardo S. Santos, Rene S. Rojas, Alan R. Cabrera Two new iminopyriridine ligands (1–2) and two new neutral Pd(II) complexes (4–5) were designed, synthesized and characterized by spectroscopic and spectrometric techniques. Molecular structures of compounds 1, 3 and 5 were obtained by X-Ray Diffraction. Addition of AgPF6 to compounds 4–5 produced two new cationic Pd(II) co...
Source: Journal of Organometallic Chemistry - March 21, 2018 Category: Chemistry Source Type: research

A new poly(N –heterocyclic carbene Pd complex) immobilized on nano silica: An efficient and reusable catalyst for Suzuki–Miyaura, Sonogashira and Heck–Mizoroki C‒C coupling reactions
Publication date: Available online 21 March 2018 Source:Journal of Organometallic Chemistry Author(s): Mostafa Khajehzadeh, Majid Moghadam In the present study, the catalytic activity of a new poly (N‒heterocyclic carbene PdII complex) immobilized on silica nanoparticles, (PdII–NHCs)n@nSiO2 was studied in the Suzuki–Miyaura, Sonogashira and Heck–Mizoroki reactions of different aryl halides with phenylboronic acid, phenylacetylene and styrene, respectively. The (PdII–NHCs)n@nSiO2 was applied as a highly effecient heterogeneous catalyst for C‒C coupling reactions. The catalyst was characterized b...
Source: Journal of Organometallic Chemistry - March 21, 2018 Category: Chemistry Source Type: research

Roll-over cyclometalation: A versatile tool to enhance the catalytic activity of transition metal complexes
Publication date: Available online 19 March 2018 Source:Journal of Organometallic Chemistry Author(s): Marko Leist, Christian Kerner, Leila Taghizadeh Ghoochany, Saeid Farsadpour, Agnes Fizia, Jens P. Neu, Florian Schön, Yu Sun, Benjamin Oelkers, Johannes Lang, Fabian Menges, Gereon Niedner-Schatteburg, Kifah S.M. Salih, Werner R. Thiel Roll-over cyclometalation is a special case of cyclometalation. While in classical cyclometalation, C,H-activation (deprotonation or oxidative addition) has to occur at the ligand to result in a metallacycle, in roll-over cyclometalation the ligand in principle has the chance to under...
Source: Journal of Organometallic Chemistry - March 20, 2018 Category: Chemistry Source Type: research

Synthesis, susceptibility to enzymatic phosphorylation, cytotoxicity and in vitro antiviral activity of lipophilic pyrimidine nucleoside/carborane conjugates
Publication date: Available online 19 March 2018 Source:Journal of Organometallic Chemistry Author(s): Magdalena Białek-Pietras, Agnieszka B. Olejniczak, Edyta Paradowska, Mirosława Studzińska, Agnieszka Jabłońska, Zbigniew J. Leśnikowski We synthesized a series of new uridine and 2′-deoxyuridine conjugates of the o-carborane cluster attached at C-5 through a linker comprising the ethynyl group and/or triazole ring separated by alkane chains. The obtained conjugates have low or medium toxicity and are phosphorylated moderately by nucleoside kinases TK1 and TK2 and efficiently by dCK. Low toxicity and susceptib...
Source: Journal of Organometallic Chemistry - March 20, 2018 Category: Chemistry Source Type: research

Deciphering the role of the cation in anionic cobaltabisdicarbollide clusters
Publication date: Available online 20 March 2018 Source:Journal of Organometallic Chemistry Author(s): Adnana Zaulet, Francesc Teixidor, Pierre Bauduin, Olivier Diat, Pipsa Hirva, Albert Ofori, Clara Viñas The counter cation influence (H+, Na+, K+ and Li+) on the aggregates formation in aqueous solution of the salts of cobaltabisdicarbollide [1]- and its derivatives (monoiodinated [I-1]- and diiodinated [I2-1]-) has been studied by means of 11B{1H} and 1H{11B} NMR spectroscopy. 11B{1H} NMR spectrum of M [1] (M = alkali or H+) in water exhibits much wider signals than in an organic solvent because organic solven...
Source: Journal of Organometallic Chemistry - March 20, 2018 Category: Chemistry Source Type: research

Nickel bis(dithiolene) complexes for electrocatalytic hydrogen evolution: A computational study
This study may benefit the deep understanding of the electrocatalyzed HER mechanism and give inspirations on the design of efficient nickel bis(dithiolene) electrocatalysts with low overpotential and improved efficiency. Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - March 17, 2018 Category: Chemistry Source Type: research

Hydride donating abilities of the tetracoordinated boron hydrides
Publication date: Available online 15 March 2018 Source:Journal of Organometallic Chemistry Author(s): Igor E. Golub, Oleg A. Filippov, Natalia V. Belkova, Lina M. Epstein, Elena S. Shubina The hydride donating ability (HDA), determined as Gibbs free energy (ΔG°H −) for the reaction of H− dissociation, was assessed via the DFT/M06/6-311++G (d,p) calculations for 90 tetracoordinated borohydrides Li [L3B-H] taking into account the solvent effects via the optimization in MeCN and CH2Cl2 under SMD model. Obtained this way, the HDAMeCN values vary from 118.2 to 13.4 kcal/mol and correlate well with the ...
Source: Journal of Organometallic Chemistry - March 16, 2018 Category: Chemistry Source Type: research

Recent progress of transition metal based catalysts for the selective dimerization of ethylene
Publication date: Available online 15 March 2018 Source:Journal of Organometallic Chemistry Author(s): Konstantin P. Bryliakov, Artem A. Antonov In this mini-review, the state-of-the-art of transition metal catalyzed selective dimerization of ethylene to butenes is presented. Catalytic activities, operating conditions, as well as the C4 and 1-butene/cis- and trans-2-butene selectivities, are discussed. The scope of the review is 2000-present. Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - March 16, 2018 Category: Chemistry Source Type: research

Synthesis and structure of arene ruthenium(II) benzhydrazone complexes: Antiproliferative activity, apoptosis induction and cell cycle analysis
This study outlines the preliminary steps towards understanding the mechanism of action with a new class of ruthenium-based chemotherapeutics. Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - March 16, 2018 Category: Chemistry Source Type: research

Benzoboroxoles: Synthesis and applications in medicinal chemistry
Publication date: Available online 15 March 2018 Source:Journal of Organometallic Chemistry Author(s): Gautam R. Mereddy, Anjali Chakradhar, Ryan M. Rutkoski, Subash C. Jonnalagadda Benzoboroxoles are cyclic boronic acids and they have gained significant attention amongst the organic and medicinal chemistry community in recent years with the approval of benzoboroxole based drugs such as tavaborole for onychomycosis and crisaborole for atopic dermatitis. There have been numerous other benzoboroxole-based compounds identified that exhibit excellent biological activity against wide variety of diseases. Much of the recent lit...
Source: Journal of Organometallic Chemistry - March 15, 2018 Category: Chemistry Source Type: research

Counterion effect and directing group effect in Rh-mediated CH bond activation processes: A theoretical study
Publication date: Available online 13 March 2018 Source:Journal of Organometallic Chemistry Author(s): Yixin Luo, Song Liu, Dongdong Xu, Ling-Bo Qu, Xiaoling Luo, Ruopeng Bai, Yu Lan Density functional theory calculations were performed to study the counterion effect and directing group effect in rhodium mediated concerted metalation deprotonation type CH bond activation of arenes. The use of different carboxylates as counterions results in changes to the activation energies over a narrow range. These changes are mainly attributed to the opposing effects of alkalinity and nucleophilicity of the substituted groups. The eff...
Source: Journal of Organometallic Chemistry - March 14, 2018 Category: Chemistry Source Type: research

Synthesis and reactivity of the cyclohexadienyl rhodium complexes
Publication date: Available online 13 March 2018 Source:Journal of Organometallic Chemistry Author(s): Roman A. Pototskiy, Alexey A. Lisov, Yulia V. Nelyubina, Dmitry S. Perekalin In a search for an active catalyst for CH-activation reactions we have synthesized the half-sandwich rhodium complexes with a cyclohexadienyl ligand. In particular, the reaction of [(cyclooctene)2RhCl]2 with 1,3,5,5-tetramethylcyclohexadiene followed by addition of bromine gave the cyclohexadienyl polybromide complex [(η5-C6H3Me4)RhBr3]n (1) in 73% yield. Treatment of 1 with ethylene converted it into the Rh(III) bromide complex [(η5-C6H...
Source: Journal of Organometallic Chemistry - March 14, 2018 Category: Chemistry Source Type: research

Usage of (C5R5)Co(CO)I2 (R  = H, Me) for the synthesis of 12-vertex closo-cobaltacarboranes. Unexpected formation of 10-{CpCo(C5H4)}-7,8-Me2-7,8-nido-C2B9H9
Publication date: Available online 14 March 2018 Source:Journal of Organometallic Chemistry Author(s): Sofya S. Kuvshinova, Yulia V. Nelyubina, Alexander F. Smol'yakov, Irina D. Kosenko, Irina G. Barakovskaya, Dmitry A. Loginov A series of 12-vertex closo-cobaltacarboranes 1,2-Rʹ2-3-(C5R5)-3,1,2-CoC2B9H9 (1a: R = Rʹ = H; 1b: R = Me, Rʹ = H; 2a: R = H, Rʹ = Me; 2b: R = Rʹ = Me) were synthesized by reactions of the carbonyl cobalt complexes (C5R5)Co(CO)I2 with Tl[Tl(η-7,8-Rʹ2-7,8-C2B9H9)]. The reaction of CpCo(CO)I2 with Tl[Tl(η-7,8-Me2-7,8-C2B9H9)] is accompanied by side format...
Source: Journal of Organometallic Chemistry - March 14, 2018 Category: Chemistry Source Type: research

Making more efficient lithium carbenoid reagents for cyclopropanation by hetero-aggregation: A DFT prediction on a new factor to control the SN2-Type organometallic reaction
Publication date: Available online 14 March 2018 Source:Journal of Organometallic Chemistry Author(s): Youxiang Shao, Xiao Huang, Cunyuan Zhao, Zhuofeng Ke Lithium carbenoids are important reagents in organic synthesis. Systemic DFT calculations have been carriered out to reveal the influence of hetero-aggregation states on the reactivity of lithium carbenoid reagents. The resutls indicate that the cyclopropanation reaction could be accelerated dramatically by hetero-aggregated lithium carbenoids with a halogen or oxygen as an α-heteroatom. The origin of the enhancement could attribute to the novel structural charac...
Source: Journal of Organometallic Chemistry - March 14, 2018 Category: Chemistry Source Type: research