Synthesis, characterization and electrochemical properties of two isomers of diiron diselenolato complexes and a new pathway to the μ4-Se twin cluster
Publication date: Available online 4 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Shuang Lü, Ru-Fen Zhang, Qian-Li Li, Jiao He, Yu-Long LiAbstractTwo isomers of diiron diselenolato complexes (ea)-(p-tBuPhSe)2Fe2(CO)6 (1), (ee)-(p-tBuPhSe)2Fe2(CO)6 (2) have been synthesized by treatment of (p-tBuPhSe)2 with Fe3(CO)12 at ambient temperature in 2 h. Moreover, a tetranuclear cluster complex [(μ-tBuPhSe)Fe2(CO)6]2 (μ4-Se) (3) was isolated by this simple and convenient way in 14% yield. All the three complexes were characterized by elemental analysis, FT-IR, NMR (1H, 13C) spectroscopy, as well ...
Source: Journal of Organometallic Chemistry - August 5, 2018 Category: Chemistry Source Type: research

Synthesis, characterization and aggregation properties of non-peripherally (1R,2R)-1,2-di(naphthalen-1-yl)ethane-1,2-diol substituted optically active zinc phthalocyanine and its catalytic application in enantioselective ethylation of aldehydes
Publication date: Available online 3 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Yaşar Gök, Halil Zeki Gök, İlker Ümit KarayiğitAbstractThe novel optically active zinc(II) phthalocyanine having four (1R,2R)-1,2-di(naphthalen-1-yl)ethane-1,2-diol 1 at non-peripheral positions has been synthesized in a condensation using optically active phthalonitrile 2, and characterized by 1H NMR, IR, UV–Vis, Circular Dichroism (CD) and HRMS-TOF spectral data. The spectral and aggregation properties of novel optically active zinc(II) phthalocyanine 3 were investigated. The aggregation behavio...
Source: Journal of Organometallic Chemistry - August 4, 2018 Category: Chemistry Source Type: research

Triphenylantimony(V) 6-alkoxymethyl-3,5-di-tert-butylcatecholates. Structure and redox-properties
Publication date: Available online 3 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Andrey I. Poddel'sky, Tatyana V. Astaf'eva, Ivan V. Smolyaninov, Maxim A. Arsenyev, Georgy K. Fukin, Nadezhda T. Berberova, Vladimir K. Cherkasov, Gleb A. AbakumovAbstractA number of mononuclear triphenylantimony(V) 3,5-di-tert-butylcatecholates of the type (6-AlkOCH2-3,5-DBCat)SbPh3 functionalized with alkoxymethyl group in the 6th position of aromatic ring in catecholato ligand, where Alk = Me (1), Et (2), iPr (3), tBu (4), n-Hexyl (5), and binuclear bis-catecholate Ph3Sb(3,5-DBCat-CH2OCH2-3,5-DBCat)SbPh3 (6) have be...
Source: Journal of Organometallic Chemistry - August 4, 2018 Category: Chemistry Source Type: research

Linear polystyrene-stabilized Rh(III) nanoparticles for oxidative coupling of arylboronic acids with alkenes in water
Publication date: Available online 3 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Atsushi Ohtaka, Shiho Fukui, Akira Sakon, Go Hamasaka, Yasuhiro Uozumi, Tsutomu Shinagawa, Osamu Shimomura, Ryôki NomuraAbstractLinear polystyrene-stabilized Rh(III) nanoparticles (PS-Rh(III)NPs) were obtained when an aqueous solution of RhCl3 was stirred at 90 °C in the presence of KOH, 4-methylphenylboronic acid, and linear polystyrene, as indicated by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). PS-Rh(III)NPs exhibited high catalytic activity for the oxidative coupling o...
Source: Journal of Organometallic Chemistry - August 4, 2018 Category: Chemistry Source Type: research

Magnetic Cu0@HAP@γ-Fe2O3 nanoparticles: An efficient catalysts for one-pot three-component reactions for the synthesis of imidazo[1,2-a]pyridines
Publication date: Available online 2 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Wei Sun, Wei Jiang, Gan Zhu, Yiqun LiAbstractCu(0) incorporated magnetic hydroxyapatite nanoparticles (Cu0@HAP@γ-Fe2O3 NPs) was conveniently synthesized via the ion exchange reaction, oxidation, and reduction steps. The structure and composition of the nanohybrid were confirmed by FT-IR, SEM, EDS, TEM, XPS, and TGA. The magnetic Cu0@HAP@γ-Fe2O3 hybrid can efficiently catalyzed a one-pot multicomponent synthesis of imidazo[1,2-a]pyridine derivatives from 2-aminopyridine, aldehyde or glyoxylic acid, and phenylace...
Source: Journal of Organometallic Chemistry - August 2, 2018 Category: Chemistry Source Type: research

Stepwise trimethylsilyl and trimethylgermyl substitutions at tetraborylmethane
Publication date: Available online 2 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Zachary J. Baum, Jingtao Zhang, Rick A.L. Morasse, Joshua E. GoldbergerAbstractIn exploring the suitability of tetraborylmethane precursors as C4− synthons, we have studied the limits of stepwise trimethylsilyl and trimethylgermyl substitutions on tetrakis (1,3-propanediolatoboryl)methane. In contrast to previous reports indicating minimal silylation of tetraborylmethanes, we have shown that organolithium-mediated deborylation-metalation methodologies readily proceed for up to two substitutions. This enables the synt...
Source: Journal of Organometallic Chemistry - August 2, 2018 Category: Chemistry Source Type: research

Hydrogenation of alkenes and alkynes catalysed by NˆO (imino)phenol palladium(II) complexes: Structural, kinetics and chemoselectivity studies
Publication date: Available online 1 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Thandeka A. Tshabalala, Stephen O. OjwachAbstractReactions of 2-(2-methoxyethylimino)ethyl)phenol (HL1), 2-(2-hydroxyethylimino)ethyl)phenol (HL2), 2-(2-aminoethylimino)ethyl)phenol (HL3) and 2-(2-hydroxyethylimino)methyl)phenol (HL4) with [PdCl2(COD)] afforded the neutral palladium complexes [PdCl2(HL1)] (1), [PdCl2(HL2)] (2), [PdCl2(HL3)] (3), [PdCl2(HL4)] (4) respectively. Treatment of complex 1 with PPh3 gave the cationic complex [Pd(HL1)ClPPh3]+ (5), while reactions of 4 with Pd(OAc)2, in the presence of PPh3 and p-Ts...
Source: Journal of Organometallic Chemistry - August 2, 2018 Category: Chemistry Source Type: research

Half-sandwich Ir(III) and Rh(III) 2,2′-dipyridylamine complexes: Synthesis, characterization and in vitro cytotoxicity against the ovarian carcinoma cells
Publication date: Available online 1 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Pavel Štarha, Zdeněk Dvořák, Zdeněk TrávníčekAbstractA series of the half-sandwich Ir(III) and Rh(III) complexes [M(η5-Cpx)(dpa)X]PF6 (M = Ir for 1–6 and Rh for 7–12) containing N-(pyridin-2-yl)pyridin-2-amine (2,2′-dipyridylamine, dpa), pentamethylcyclopentadienyl (Cp*; for 1–5 and 7–11) or 1,2,3,4-tetramethyl-5-phenylcyclopentadienyl (Cpph; for 6 and 12) ring, and various monodentate ligands (X), specifically Cl− (for 1, 6, 7 and 12), Br− (...
Source: Journal of Organometallic Chemistry - August 2, 2018 Category: Chemistry Source Type: research

DFT studies of isomerization in palladium(IV) chemistry and alkyl halide transfer from palladium(IV) to palladium(II)
Publication date: Available online 1 August 2018Source: Journal of Organometallic ChemistryAuthor(s): Allan J. Canty, Alireza AriafardAbstractA DFT study of alkyl halide exchange from Pd(IV) to Pd(II) centers supports proposals for an SN2 process in which nucleophilic Pd(II) square-planar complexes attack the axial alkyl group in electrophilic square-pyramidal Pd(IV) centers, leading to transfer of R+ from Pd(IV) to Pd(II) involving a transition structure of the form [R2 (bpy)··R··PdR2 (bpy)]+ (bpy = 2,2′-bipyridine). Computation accounts for the selectivity in benzyl (Bn) over methyl ...
Source: Journal of Organometallic Chemistry - August 1, 2018 Category: Chemistry Source Type: research

Recent progress on ferrocene-based burning rate catalysts for propellant applications
This article outlines the latest synthetic advancements in the field of Fc-based BRCs, as well as highlighting their catalytic and anti-migration mechanisms.Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 31, 2018 Category: Chemistry Source Type: research

Synthesis and characterization of triruthenium carbonyl incorporating 4-pyridones as potential antitumor agents
Publication date: Available online 29 July 2018Source: Journal of Organometallic ChemistryAuthor(s): V.D. Reddy, Divya Dayal, David J. Szalda, Stephen C. Cosenza, M.V. Ramana ReddyAbstractFour new organometallic triruthenium carbonyl incorporating 4-pyridones: [Ru3(CO)8(2L-2H)] (1, L = N-benzyl-3-hydroxy-2-methyl-4-pyridone; 2, L = 3-hydroxy-2-methyl-N-phenyl-4-pyridone; 3, L = 3-hydroxy-N,2-dimethyl-4-pyridone; 4, L = 2-methyl-4-pyridone) were synthesized and characterized. Proton NMR spectrum of 1 shows doublets for the two-nonequivalent benzylic hydrogens due to restricted rotation around C-N bond upon b...
Source: Journal of Organometallic Chemistry - July 29, 2018 Category: Chemistry Source Type: research

Synthesis of N-heterocyclic carbene-PdCl-[(2-Pyridyl)alkyl carboxylate] complexes and their catalytic activities towards arylation of (benzo)oxazoles with aryl bromides
Publication date: Available online 26 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Wei Chen, Jin YangAbstractFour well-defined N-heterocyclic carbene-PdCl-[(2-Pyridyl)alkyl carboxylate] complexes have been conveniently synthesized through bridge-cleavage reactions of [Pd (μ-Cl) (Cl) (NHC)]2 with (2-pyridyl)alkyl carboxylic acids [2-(pyridin-2-yl)acetic acid and 3-(pyridin-2-yl)propanoic acid]. The new complexes have been fully characterized by NMR, elemental analysis, HR-MS and X-ray single-crystal diffraction. The catalytic performance of the complexes was screened and the obtained palladium (II) comp...
Source: Journal of Organometallic Chemistry - July 27, 2018 Category: Chemistry Source Type: research

Reactivity of Ru(II) and V(III) complexes of diazafluorene derivatives towards B–H bonds
We report the synthesis and characterization of Ru(II) and V(III) 4,5-diazafluorene derivatives, and their respective reactivity towards B-H bonds. A Ru(II) hydride dinitrogen complex reacts with HBpin to liberate the labile N2 ligand resulting in a dihydridoborate complex. Upon addition of either further HBpin or ClBpin a ligand-based borylation occurs. The first trialkylhydridoborate complex of vanadium was prepared by the addition of 3 eq. of K [HBEt3] to a V(III) chloride precursor supported by a 2,6-bis(mesityl) substituted 4,5-diazafluorene derivative, and features a (μ-H)B ((μ-H)CHMe)2 (Et) type of coordinatio...
Source: Journal of Organometallic Chemistry - July 26, 2018 Category: Chemistry Source Type: research

Solvent and intermolecular nitrogen coordination dictated formation of self-assembled organostannane-macrocycles based on monomers and coordination polymers with unsymmetrical 5-[(E)-2-(4-pyridyl)-1-diazenyl]-2-hydroxybenzoate ligand: Structural topologies and dimensionality
Publication date: Available online 26 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Tushar S. Basu Baul, Anurag Chaurasiya, Andrew Duthie, María G. Vasquez-Ríos, Herbert HöpflAbstractA series of six new organotin(IV) compounds, namely, [nPr3Sn(HL)(MeOH)] 1, [nBu3Sn(HL)]n2, [Bz3Sn(HL)]n3, [Ph3Sn(HL)]n⋅nC6H64, [Ph3Sn(HL)(EtOH)] 5 and [nBu2Sn(L)]n6 were synthesized by reacting appropriate tri- and di-organotin(IV) precursors with the flexible pro-ligand 5-[(E)-2-(4-pyridyl)-1-diazenyl]-2-hydroxybenzoic acid. Their solid-state structures were deduced from single crystal X-ray diffractio...
Source: Journal of Organometallic Chemistry - July 26, 2018 Category: Chemistry Source Type: research

Synthesis, structures and stereodynamic behavior of novel pentacoordinate (O→Si)-Chelate Difluoro(methyl)silylmethyl derivatives of amides and imides
Publication date: Available online 24 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Vadim V. Negrebetsky, Eugeniya P. Kramarova, Aleksander G. Shipov, Yuri I. Baukov, Alexander A. Korlyukov, Dmitry E. Arkhipov, Alan R. Bassindale, Peter G. Taylor, Sergey Yu BylikinAbstractThe structures and stereodynamic behavior of (O→Si)-chelate methyldifluorosilanes in solutions were studied by multinuclear (1H, 13C, 19F, 29Si) and 2D (COSY, HETCOR 1H, 13C) NMR spectroscopy. The range of studied complexes included amides RC(O)N(R')CH2SiMeF2 [R = Ph, R' = H (1a); R = R' = Me (1b); R = Me, R' =...
Source: Journal of Organometallic Chemistry - July 25, 2018 Category: Chemistry Source Type: research

Synthesis, structure and catalytic activity of novel five-membered Pd(II) and Pt(II) metallaheterocycles based on 1,2-bis(3,5-dimethylisoxazol-4-yl-methylsulfanyl)ethane
Publication date: Available online 24 July 2018Source: Journal of Organometallic ChemistryAuthor(s): N.S. Akhmadiev, E.S. Mescheryakova, R.A. Khisamutdinov, A.N. Lobov, M.F. Abdullin, A.G. Ibragimov, R.V. Kunakova, V.R. AkhmetovaAbstractNovel palladium(II) and platinum(II) heterocycles were synthesized based 1,2-bis(3,5-dimethylisoxazol-4-ylmethylsulfanyl) ethane. According to X-ray Crystallographic data in molecule there are two bonds between divalent sulfur atoms and metal atom S-Pd-S to form a five-membered palladacycle in the twist-conformation with trans orientation of isoxazole rings. The syn-anti-isomerization for t...
Source: Journal of Organometallic Chemistry - July 25, 2018 Category: Chemistry Source Type: research

Synthesis of novel closo-carborane complexes of ruthenium (II) with triphenylphosphine or acetonitrile ligands via reduction of paramagnetic Ru(III) derivatives
Publication date: Available online 21 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Anastasiya M. Penkal, Dmitry I. D'yachihin, Nikolay V. Somov, Ekaterina S. Shchegravina, Ivan D. GrishinAbstractA novel method for synthesis of diamagnetic Ru(II) carborane clusters based on reduction of corresponding Ru(III) species by amines was developed. The interaction of paramagnetic 17-electron complex [3-Cl-3,3,8-{Ph2P(CH2)4PPh-μ-(C6H4-ortho)}-closo-3,1,2-RuC2B9H10] (1) with aliphatic amines in dichloromethane solution at 40 °C proceeds with the abstraction of chlorine atom from the ruthenium center and res...
Source: Journal of Organometallic Chemistry - July 22, 2018 Category: Chemistry Source Type: research

Oxidative addition of CH2Cl2 to neutral dimeric rhodium diphosphine complexes
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Alberto Mannu, Hans-Joachim Drexler, Richard Thede, Monica Ferro, Wolfgang Baumann, Julia Rüger, Detlef HellerAbstractNeutral dimeric rhodium diphosphine complexes are often employed as catalytic precursors in the presence of the solvent CH2Cl2. The possibility of a collateral reaction between the solvent and the catalytic precursor is never considered as the activation of CH2Cl2 by [Rh2(PP)2 (μ2-Cl)2] complexes is reputed difficult and uncommon. Herein we report the easy formation of three neutral dimeric Rh(III) c...
Source: Journal of Organometallic Chemistry - July 22, 2018 Category: Chemistry Source Type: research

Bidentate and tridentate coordination modes of bis(3-methylindolyl)-2-pyridylmethane in complexes of aluminum and gallium: Structural characterization of bridging N-indolide in a dialuminum complex
Publication date: Available online 21 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Bassam N. Fneich, Anirban Das, Kristin Kirschbaum, Mark R. MasonAbstractReactions of a slight excess of trialkylaluminum or tri-tert-butylgallium with bis(3-methylindolyl)-2-pyridylmethane (1) produced monomeric, tripodal complexes (2-C5H4N)HC(3-CH3C8H4N)2MR (M = Al, R = Me (2a), Et (2b), iBu (2c), tBu (2d); M = Ga, R = tBu (3)). Under more mild reaction conditions and with a stoichiometric amount of tri-tert-butylaluminum or tri-tert-butylgallium, complexes (2-C5H4N)HC(3-CH3C8H4N)(3-CH3C8H4NH)MtBu2 (M =...
Source: Journal of Organometallic Chemistry - July 21, 2018 Category: Chemistry Source Type: research

Diphosphine-induced thiolate-bridge scission of [Re(CO)3(μ,κ2-S,N-thpymS)]2 (thpymS = 1,4,5,6-tetrahydropyrimidine-2-thiolate): Structural and computational studies of configurational isomers of [Re(CO)3(κ2-S,N-thpymS)]2(μ,κ1,κ1-dppe)
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Md. Rassel Moni, Shishir Ghosh, Shaikh M. Mobin, Derek A. Tocher, Graeme Hogarth, Michael G. Richmond, Shariff E. KabirAbstractReactions of binuclear [Re(CO)3(μ,κ2-S,N-thpymS)]2 (1) with diphosphines have been investigated. At 298 K, dppm reacts to give mononuclear [Re(CO)3(κ1-dppm)(κ2-S,N-thpymS)] (2) through a phosphine-promoted scission of the dithiolate bridges that leaves one of the phosphine moieties free (dangling). Refluxing 2 in toluene leads to CO loss and formation of dinuclear [Re2(CO)4(&m...
Source: Journal of Organometallic Chemistry - July 21, 2018 Category: Chemistry Source Type: research

CH activations in aldehydes in reactions with Ru5(μ5-C)(CO)15
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Richard D. Adams, Humaiara Akter, Jonathan D. TedderAbstractThe reaction of Ru5(μ5-C)(CO)15, 1 with benzaldehyde yielded two new pentaruthenium carbido cluster compounds: Ru5(μ5-C)(CO)14[η2-O=C(H)C6H4](μ-H), 2 and Ru5(μ5-C)(CO)14(μ-η2-O=CPh)(μ-H), 3 containing open Ru5C cluster complexes formed by the activation of two different C-H bonds of the benzaldehyde molecule. Compound 2 contains a chelating, ortho-metallated benzaldehyde ligand coordinated to an open Ru5C cluster that is coordinated by the...
Source: Journal of Organometallic Chemistry - July 21, 2018 Category: Chemistry Source Type: research

Nickel complexes of primary amido-functionalized N-Heterocyclic carbene ligands: Synthesis, characterization, and base-free transfer hydrogenation
Publication date: Available online 18 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Tiffany V. Roach, Michelle L. Schmitz, Valkyrie A. Leach, Marcus D. Miller, Benny C. Chan, Steven E. KalmanAbstractThree new nickel complexes featuring primary amido-functionalized N-heterocyclic carbene ligands have been synthesized and characterized using NMR spectroscopy, combustion analysis, and, in one case, single crystal x-ray diffraction. Each complex serves as a pre-catalyst for base-free transfer hydrogenation of aryl ketones in air using 2-propanol or 2-butanol as the solvent and hydrogen donor. Furthermore, in m...
Source: Journal of Organometallic Chemistry - July 19, 2018 Category: Chemistry Source Type: research

Stabilization of two coordinate tetrylene by borylamide ligand
Publication date: Available online 18 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Michal Aman, Ondřej Mrózek, Libor Dostál, Zdeňka Růžičková, Roman JamborAbstractHere we report the synthesis of aminoborane HN(BCy2) (C6H3-2,6-Me2) (1) (Cy = cyclohexyl), that was successfully deprotonated and its lithium salt {LiN(BCy2) (C6H3-2,6-Me2)}2 (2) has been characterised. The borylamide ligand -N(BCy2) (C6H3-2,6-Me2) was used for the preparation of N→Sn coordinated stannylene [2,6-(Me2NCH2)2C6H3]Sn [N(BCy2) (C6H3-2,6-Me2)] (3) and two coordinate tetrylenes {E [N(BCy2) (C6H3-2,6-M...
Source: Journal of Organometallic Chemistry - July 19, 2018 Category: Chemistry Source Type: research

Synthesis of monofunctionalized POSS through hydrosilylation
Publication date: Available online 18 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Marcin Walczak, Rafał Januszewski, Adrian Franczyk, Bogdan MarciniecAbstractIn this paper, we propose an efficient method for the synthesis of new organosilicon compounds based on hydrosilylation of functional olefins with monohydrido POSS as well as hydrosilylation of monovinyl POSS with functionalized monohydrodisiloxanes. A large number of new compounds were obtained and comprehensively characterized. These compounds can be building blocks for the synthesis of novel hybrid molecules and macromolecules.Graphical abstract...
Source: Journal of Organometallic Chemistry - July 19, 2018 Category: Chemistry Source Type: research

Facile methods of siloxanes derivatives modification by azodyes based on eugenol
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Fedor V. Drozdov, Georgij V. Cherkaev, Mihail I. Buzin, Aziz M. MuzafarovAbstractIn this paper, two simple methods of introducing an azodye into a siloxane matrix using hydrosilylation and azo coupling reactions are presented by the example of the model heptamethyltrisiloxane. It has been shown that the introduction of the bisazoevgenol fragment into the heptamethyltrisiloxane molecule results in the crystallization of the siloxane derivative. The obtained compound was studied by nuclear magnetic resonance (NMR) spectroscop...
Source: Journal of Organometallic Chemistry - July 19, 2018 Category: Chemistry Source Type: research

Mononuclear and dinuclear heteroleptic Cu(I) complexes based on pyridyl-triazole and DPEPhos with long-lived excited-state lifetimes
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Claudia Bizzarri, Andreas P. Arndt, Stephan Kohaut, Karin Fink, Martin NiegerAbstractA mononuclear and two dinuclear heteroleptic Cu(I) complexes have been successfully prepared, using the chelating bis [(2-diphenylphosphino)phenyl] ether (DPEPhos) and pyrid-2′-yl-1H-1,2,3-triazole as NˆN chelating ligands. They show good luminescence in solution at room temperature with long-lived excited states. Furthermore, bimolecular quenching experiments of these new complexes with the catalyst Ni(cyclam)Cl2 encourage the u...
Source: Journal of Organometallic Chemistry - July 19, 2018 Category: Chemistry Source Type: research

Ruthenium (II) complexes containing dehydroacetic acid and its imine derivative ligands. Synthesis, characterization and cancer cell growth anti-proliferation activity (GI50) study
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Kuan-Hung Chen, Tzung-Han Lin, Tzu-En Hsu, Yong-Jie Li, Guan-Hao Chen, Wohn-Jenn Leu, Jih-Hwa Guh, Chia-Her Lin, Jui-Hsien HuangAbstractTwo dehydroacetic acid (DHA, L1H) related imine ligands, L2H and L3H were obtained in moderate yields by reacting DHA with 2,4,6-trimethylaniline and phenylhydrazine, respectively. Refluxing [Ru (η6-p-cymene)Cl2]2 with two equivalents of L1Na, L2H and L3H in methanol generated ruthenium compounds [Ru (η6-p-cymene)Cl (L1)] (1), [Ru (η6-p-cymene)Cl (L2)] (2), [Ru (η6-p-cymene)...
Source: Journal of Organometallic Chemistry - July 19, 2018 Category: Chemistry Source Type: research

An original one-pot approach to boronic esters using the titanium-catalyzed reaction of cyclic olefins with alkyldichloroboranes
Publication date: Available online 17 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Liliya I. Khusainova, Leila O. Khafizova, Tatyana V. Tyumkina, Kirill S. Ryazanov, Natalya R. Popodko, Usein M. DzhemilevAbstractBoronic esters (dicycloheptylalkylboronates, dicyclooctylalkylboronates, dicyclododecylalkylboronates, dibicyclo[2.2.1]hept-2-ylalkylboronates) are produced with yields ranging from moderate to excellent (52–96%) by the reaction between cyclic olefins (cycloheptene, cis-cyclooctene, cis/trans-cyclododecene, norbornene) and alkyldichloroboranes (alkyl = Et, n-Pent) in the presence of meta...
Source: Journal of Organometallic Chemistry - July 18, 2018 Category: Chemistry Source Type: research

Effect of different carboxylic acids on the aromatic hydroxylation with H2O2 in the presence of an iron aminopyridine complex
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Nikolay V. Tkachenko, Oleg Y. Lyakin, Alexandra M. Zima, Evgenii P. Talsi, Konstantin P. BryliakovAbstractIn this contribution, the effect of the structure of the catalytic additive – carboxylic acid – on the catalytic performance of the iron based catalyst [(PDP)Fe(OTf)2], 2 (PDP = N,N′-bis(2-pyridylmethyl)-(S,S)-2,2′-bipyrrolidine) in the selective aromatic oxidation of alkylbenzenes with H2O2 is presented. Eight (linear and branched) carboxylic acids have been tested; in the presence of 2-eth...
Source: Journal of Organometallic Chemistry - July 18, 2018 Category: Chemistry Source Type: research

Oxidative addition of CH2Cl2 on neutral dimeric rhodium diphosphine complexes
Publication date: Available online 17 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Alberto Mannu, Hans-Joachim Drexler, Richard Thede, Monica Ferro, Wolfgang Baumann, Julia Rüger, Detlef HellerAbstractNeutral dimeric rhodium diphosphine complexes are often employed as catalytic precursors in the presence of the solvent CH2Cl2. The possibility of a collateral reaction between the solvent and the catalytic precursor is never considered as the activation of CH2Cl2 by [Rh2(PP)2 (μ2-Cl)2] complexes is reputed difficult and uncommon. Herein we report the easy formation of three neutral dimeric Rh(III) c...
Source: Journal of Organometallic Chemistry - July 18, 2018 Category: Chemistry Source Type: research

Structures and stereoinversions of β-shielded α-Li (or K or Cs)-acrylonitriles: A mechanism with neighborly assistance
Publication date: Available online 12 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Rudolf Knorr, Barbara Schmidt, Johann Mehlstäubl, Therese von RomanAbstractNeighborly intermolecular assistance is common within the clusters of aggregating organolithium compounds but rarely as continual and kinetically helpful as for the β-shielded α-lithioacrylonitrile 2Li of the type N≡C–C(Li) = C (tert-alkyl)2. Intermolecular NLi coordination with the α-cyano substituent of 2Li was discovered not only in single crystals of a cyclohexamer or of a (Li–C–C≡N)2 eight-...
Source: Journal of Organometallic Chemistry - July 12, 2018 Category: Chemistry Source Type: research

Editorial Board
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 12, 2018 Category: Chemistry Source Type: research

Graphical abstract TOC
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 12, 2018 Category: Chemistry Source Type: research

Syntheses, characterization and reactivity of dinuclear ruthenium-nickel complexes with hexane-2,5-dione bis(thiosemicarbazonato) ligands
Publication date: Available online 10 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Duo-Wen Fang, Ai-Quan Jia, Xian-Ping Dong, Zhifeng Xin, Qian-Feng ZhangAbstractTreatment of hexane-2,5-dione bis(thiosemicarbazones) ([CH3‒C{ = N‒NH‒C(=S)‒NHR}‒CH2]2, R = H, L1H2; CH3, L2H2‒Me; CH2CH3, L3H2‒Et; C6H5, L4H2‒Ph) with nickel(II) acetate hydrate in refluxing ethanol gave a series of NiIIN2S2 metalloligands [Ni(L-R)] for the generation of hetero-bimetallic complexes. The reaction of equal mole each of [Ni(L1)], [Ni(L2‒Me)], [Ni(L3‒Et)], or [Ni(L4‒Ph)] with [RuCl2(dmso)4] (dmso = ...
Source: Journal of Organometallic Chemistry - July 12, 2018 Category: Chemistry Source Type: research

Synthesis of [99TcX(CO)5] (X = Cl, Br, I) at ambient pressure
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Alexander E. Miroslavov, Henrik Braband, Georgii V. Sidorenko, Ekaterina S. Stepanova, Alexander A. Lumpov, Roger AlbertoAbstractA novel procedure for ambient-pressure synthesis of pentacarbonyltechnetium halides [99TcX(CO)5] (X = Cl, Br) was developed. The procedure is based on treatment of K2[99TcX6] with a mixture of HCOOH and H2SO4 on heating. With X = I, a mixture of [99TcI(CO)5] and [99TcI(CO)4]2 was obtained. The products were characterized by elemental analysis and by 99Tc NMR and IR spectroscopy.Graphical a...
Source: Journal of Organometallic Chemistry - July 12, 2018 Category: Chemistry Source Type: research

Synthesis and characterization of amino glucose-functionalized silica-coated NiFe2O4 nanoparticles: A heterogeneous, new and magnetically separable catalyst for the solvent-free synthesis of 2,4,5–trisubstituted imidazoles, benzo[d]imidazoles, benzo[d] oxazoles and azo-linked benzo[d]oxazoles
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Leila Zare Fekri, Mohammad Nikpassand, Shahab Shariati, Behnaz Aghazadeh, Reza Zarkeshvari, Nahid Norouz pourAbstractAmino glucose-functionalized silica-coated NiFe2O4 nanoparticles (NiFe2O4@SiO2@amino glucose) were chemically synthesized and characterized by transmission electron microscope (TEM), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), energy dispersive X-ray analysis (EDX), vibrating sample magnetometer (VSM), Zetasizer and Fourier transform infrared spectroscopy (FT-IR) instruments. NiFe2O4@SiO2@ami...
Source: Journal of Organometallic Chemistry - July 12, 2018 Category: Chemistry Source Type: research

Propylene polymerization using TiCln(OR)(4–n) catalysts: Theoretical analysis and experimental investigation
Publication date: Available online 10 November 2017Source: Journal of Organometallic ChemistryAuthor(s): Kefeng Xie, Bochao Zhu, Anping Huang, Wenxue Zhang, Jingcheng Xu, Peng LiuAbstractPropylene polymerization mechanism was investigated with density functional theory (DFT) using TiCln(OR)(4–n) catalysts, with active centers such as [TiCl2Et]+, [TiCl(OEt)Et]+, [TiCl(OPh)Et]+, or [Ti(OEt)2Et]+. Improving the stereoselectivity of Ziegler–Natta catalyst through introducing alkoxy groups, the active center became asymmetric structure, and consequently the polymerization of propylene using [TiCl(OEt)Et]+ and [TiCl(...
Source: Journal of Organometallic Chemistry - July 11, 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 2018Source: Journal of Organometallic ChemistryAuthor(s): Debashis Chakraborty, Bijja Rajashekhar, Mrinmay Mandal, Venkatachalam RamkumarAbstractThe 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-methylbenzenesulf...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Ruthenium carbonyl containing 4-pyrones as potent anticancer agents
Publication date: Available online 12 April 2018Source: Journal of Organometallic ChemistryAuthor(s): V.D. Reddy, Divya Dayal, David J. Szalda, Stephen C. Cosenza, M.V. Ramana ReddyAbstractFour new triruthenium carbonyl containing 4-pyrones: Ru3(CO)8(2 L-2H) 1 (L = ethylmaltol), Ru3(CO)7(PTA) (2 L-2H) 2 (L = ethylmaltol, PTA = 1,3,5 triaza-7-phosphaadamantane), Ru3(CO)8(2 L-2H) 3 (L = allomaltol), Ru3(CO)7(PTA) (2 L-2H) 4 (L = allomaltol, PTA = 1,3,5 triaza-7-phosphaadamantane) have been synthesized and characterized. Anticancer activity of compounds 1–4 has been evaluated in vitr...
Source: Journal of Organometallic Chemistry - July 11, 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 2018Source: Journal of Organometallic ChemistryAuthor(s): Qi Zhang, Mo Li, Jia-Qin Liu, Hai-Zhu YuAbstractThe 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...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Synthesis of the labile rhenuim(I) complexes fac-Re(CO)3(L)[κ2-O,O-FcC(O)CHC(O)Me] (where Fc = ferrocenyl; L = THF, H2O, alkyne) and alkyne addition to the diketonate ligand
Publication date: Available online 22 June 2018Source: Journal of Organometallic ChemistryAuthor(s): Silvia Atim, Li Yang, Volodymyr Nesterov, Xiaoping Wang, Michael G. RichmondAbstractRefluxing equimolar amounts of 1-ferrocenyl-1,3-butanedione (Fcacac) with BrRe(CO)5 in THF yielded the labile solvent complex fac-Re(CO)3 (THF)[κ2-O,O-FcC(O)CHC(O)Me] (1) in 80% isolated yield. 1 may also be prepared in quantitative yield using fac-BrRe(THF)2(CO)3 as the starting rhenium complex. The THF molecule in 1 is replaced by H2O during chromatographic purification to furnish the corresponding aqua complex fac-Re(CO)3(H2O)[&kapp...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Synthesis and characterization of Pd-γ-Fe2O3 nanocomposite and its application as a magnetically recyclable catalyst in ligand-free Suzuki-Miyaura reaction in water
Publication date: Available online 27 June 2018Source: Journal of Organometallic ChemistryAuthor(s): Dipankar Paul, Siddheswar Rudra, Prabin Rahman, Snehadrinarayan Khatua, Mukul Pradhan, Paresh Nath ChatterjeeAbstractA novel redox-driven method to synthesize Pd-γ-Fe2O3 nanocomposite from Fe3O4 and PdCl2 under modified hydrothermal technique has been developed. The synthesized nanocomposite was characterized by XRD, FT-IR, XPS, FESEM, TEM and EDX to understand the composition as well as morphology. The Pd-γ-Fe2O3 nanocomposite was found to show excellent catalytic activity towards Suzuki-Miyaura cross-coupling ...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Synthesis of [99TcX(CO)5] (X = Cl, Br, I) at ambient pressure
Publication date: Available online 4 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Alexander E. Miroslavov, Henrik Braband, Georgii V. Sidorenko, Ekaterina S. Stepanova, Alexander A. Lumpov, Roger AlbertoAbstractA novel procedure for ambient-pressure synthesis of pentacarbonyltechnetium halides [99TcX (CO)5] (X = Cl, Br) was developed. The procedure is based on treatment of K2 [99TcX6] with a mixture of HCOOH and H2SO4 on heating. With X = I, a mixture of [99TcI(CO)5] and [99TcI(CO)4]2 was obtained. The products were characterized by elemental analysis and by 99Tc NMR and IR spectroscopy.Graphical ...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Heterogenization of homogeneous NHC-Pd-pyridine catalysts and investigation of their catalytic activities in Suzuki-Miyaura coupling reactions
Publication date: Available online 5 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Cihangir Boztepe, Asım Künkül, Sedat Yaşar, Nevin GürbüzAbstractNew generation, novel, environmentally safe polymeric heterogeneous catalysts which included catalytically active NHC-Pd-pyridine complexes were prepared by radical polymerization of NHC-Pd-pyridine complexes with Acrylamide (AAm) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) monomers in the presence of N,N′-methylenebisacrylamide (MBA) crosslinker. Structural characterization of NHC-Pd-pyridine complexes was conducted by usin...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Sterically crowded dimeric diisobutylaluminum aryloxides: Synthesis, characteristics, and application as activators in homo- and copolymerization of olefins
Publication date: Available online 5 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Еvgeny Е. Faingol'd, Igor V. Zharkov, Natalia M. Bravaya, Andrey N. Panin, Stanislav L. Saratovskikh, Olga N. Babkina, Gennadii V. ShilovAbstractA row of dimeric diisobutylaluminum aryloxides bearing different sterically crowded substituents in ortho-positions of the aryl ligand [(ArO)AliBu2]2 (ArO = 2-tBu-C6H4O (AlTBP), 2-Me,6-tBu-C6H3O (AlMTBP), 2,6-iPr2-C6H3O (AlDIPP), 2-Ph-C6H4O (AlPP), 2,6-Ph2-C6H3O (AlDPP), 1-C10H7O (AlN-1) was synthesized. The Molecular structures of AlMTBP, AlDIPP, AlPP, AlDPP, and AlN-1 have b...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Mixed μ-azido-Schiff-base cyclometallated Pd (II) complexes as a template for novel palladacycles bearing bridging carbodiimido, tetrazolato ligands, and tetrazole-thiolato linkers
Publication date: Available online 6 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Yuchun Jiang, Manna Li, Daliang Liu, Xi-Ming Song, Xiaohong ChangAbstractMixed μ-azido-Schiff-base palladacycles [Pd{C,N-κ2-(4-R)C6H3CH = N-C6H3-2,6-i-Pr2}(μ2-N3)]2 (R = H, 1; OMe, 2) served as a metal-template for the synthesis of unusual dicarbodiimido bridged complexes [(μ2-NCN-Xyl)Pd{C,N-κ2-(4-R)C6H3CH = NC6H3-2,6-i-Pr2}]2 (R = H; OMe) and mixed tetrazolato-isocyanido complexes [Pd(C,N-κ2-(4-R)C6H3CH = NC6H3-2,6-i-Pr2) (CN4-Xyl) (CN-Xyl)] (R = H; OMe). Reactions of ethyl...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Diphosphine-induced thiolate-bridge scission of [Re(CO)3(μ,κ2-S,N-thpymS)]2 (thpymS = 1,4,5,6-tetrahydropyrimidine-2-thiolate): Structural and computational studies of configurational isomers of [Re(CO)3(κ2-S,N-thpymS)]2(μ,κ1,κ1-dppe)
Publication date: Available online 7 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Md Rassel Moni, Shishir Ghosh, Shaikh M. Mobin, Derek A. Tocher, Graeme Hogarth, Michael G. Richmond, Shariff E. KabirAbstractReactions of binuclear [Re(CO)3(μ,κ2-S,N-thpymS)]2 (1) with diphosphines have been investigated. At 298 K, dppm reacts to give mononuclear [Re(CO)3 (κ1-dppm) (κ2-S,N-thpymS)] (2) through a phosphine-promoted scission of the dithiolate bridges that leaves one of the phosphine moieties free (dangling). Refluxing 2 in toluene leads to CO loss and formation of dinuclear [Re2(CO)4 (&...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Synthesis of mono- and tetra-nuclear β-pyridylenolate zinc complexes and their catalysis toward the ring-opening copolymerization of ε-caprolactone and lactide
Publication date: Available online 7 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Lu Qin, Jianliang Bai, Yue Zhang, Xia ChenAbstractThe synthesis of mono-nuclear β-pyridylenolate zinc complexes L12Zn (1) (L1 = (2-C5H4N)–CH=C(CH3)–O–) and L22Zn (2) (L2 = (2-C5H4N)–CH=C (2-CH3C6H5)–O–) were performed by the protonolysis of the corresponding β-pyridylenol bidentate ligands 1-(2-pyridinyl)-2-propanone (L1H) and 1-(2-methylphenyl)-2-(2-pyridinyl)-ethanone (L2H) with diethylzinc in a 2:1 M ratio, respectively. The unanticipated tetra-nuclear β-pyridylenolate ...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

A new ferrocenophane with amide and triazole donors for recognition of dihydrogenphosphate anion
Publication date: Available online 9 July 2018Source: Journal of Organometallic ChemistryAuthor(s): You-Hui Zhang, Hongwei Huang, Si-Si Yang, Qian-Yong CaoAbstractA new ferrocenophane 1 incorporation amide and triazole donors has been conveniently prepared via ‘click’ reactions in the cyclization step. The probe shows exclusive electrochemical sensing of H2PO4− with a large potential shift. The 1H NMR titrations and DFT calculation results show that the amide NH, the triazole CH, the endocyclic benzene CH and the α-position cyclopentadiene CH protons of 1 play a key role for binding with the guest H...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research