Synthesis of novel carboranyl azides and “click” reactions thereof
Publication date: Available online 31 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Marina Yu. Stogniy, Svetlana A. Erokhina, Anna A. Druzina, Igor B. Sivaev, Vladimir I. BregadzeAbstractNovel nido-carboranyl azide [7-N3CH2CH2OCH2CH2O-7,8-C2B9H11]- was prepared by the reaction of 1-hydroxy-ortho-carborane with bis(2-chloroethyl) ether followed by the conversion to its nido-form and reactions with sodium iodide and sodium azide. Previously undescribed carboranyl azides 1-N3CH2CH2OCH2CH2S-1,2-C2B10H11 and [7-N3CH2CH2OCH2CH2S-7,8-C2B9H11]- were synthesized by alkylation of trimethylammonium salt of 1-merca...
Source: Journal of Organometallic Chemistry - November 1, 2019 Category: Chemistry Source Type: research

Editorial Board
Publication date: 1 December 2019Source: Journal of Organometallic Chemistry, Volume 902Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 31, 2019 Category: Chemistry Source Type: research

Graphical abstract TOC continued
Publication date: 1 December 2019Source: Journal of Organometallic Chemistry, Volume 902Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 31, 2019 Category: Chemistry Source Type: research

Graphical abstract TOC
Publication date: 1 December 2019Source: Journal of Organometallic Chemistry, Volume 902Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 31, 2019 Category: Chemistry Source Type: research

Investigations into the mechanism of the in situ formation of neutral dinuclear rhodium complexes
Publication date: Available online 28 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Saskia Möller, Christoph Kubis, Hans-Joachim Drexler, Elisabetta Alberico, Detlef HellerAbstractThe often applied in situ formation of neutral dinuclear rhodium precatalysts of the type [Rh(Diphosphine)(μ2-Cl)]2 with the ligands DPEPhos and DIOP has been mechanistically investigated by NMR spectroscopy. The structural characterization of reaction intermediates [Rh2(μ2-Diphosphine)(COD)2(Cl)2] and [Rh2(Diphosphine)(COD)(μ2-Cl)2] was accomplished using X-ray crystallography. So a new and unexpected intermedia...
Source: Journal of Organometallic Chemistry - October 29, 2019 Category: Chemistry Source Type: research

Supramolecular architecture of diammonium ferrocene-1,1′-diyldi(methylphosphinate)
Publication date: Available online 25 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Ruslan Shekurov, Mikhail Khrizanforov, Kamil Ivshin, Vasili Miluykov, Yulia Budnikova, Olga KataevaAbstractThe ammonium salt of 1,1′-ferrocenylene-bis(methylphosphinic) acid was obtained and structurally characterized. The salt forms a supramolecular 3D structure due to hydrogen bonds between the layers formed by ammonium cations and 1,1′-ferrocenylene-bis(methylphosphinic) acid dianions. It is found that the methyl substituent in the salt does not prevent the formation of hydrogen bonds in three-dimensional ...
Source: Journal of Organometallic Chemistry - October 26, 2019 Category: Chemistry Source Type: research

Solvent free synthesis of ferrocene based rhodamine – hydrazone molecular probe with improved bioaccumulation for sensing and imaging applications
Publication date: Available online 25 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Smriti Dewangan, Tulasi Barik, Rakesh Parida, Shradha Mawatwal, Rohan Dhiman, Santanab Giri, Saurav ChatterjeeAbstractFunctionalization of ferrocenyl hydrazone with rhodamine based tag using solid state synthetic method led to the formation of molecules containing both, fluorescent active and electroactive fragments, [(η5-C5H5)Fe{(η5-C5H4)C(R)═NNC(O)-X}] (R = CH3, H; X = Rhodamine-6G). The molecules showed selective metal ion sensing and switching behavior with distinct interaction and influence from th...
Source: Journal of Organometallic Chemistry - October 26, 2019 Category: Chemistry Source Type: research

Computational and experimental assessment on the nonlinear optical properties of platinum(II) arylacetylides with donor-acceptor structures
Publication date: Available online 24 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Fengli Wei, Xuewei Huang, Zhaoxun Lian, Yanyan Zhu, Fengqi GuoAbstractThe nonlinear optical properties of eight platinum acetylides with donor-acceptor structures were investigated via computational and experimental methods, and the relationship between the structures and the properties was discussed deeply based on the computational and experimental results. The contributions of all the atoms to the electronic density of HOMO and LUMO of the platinum acetylide complexes were calculated using the time-dependent density f...
Source: Journal of Organometallic Chemistry - October 25, 2019 Category: Chemistry Source Type: research

Palladium NHC complexes with benzimidazolium biphenyl ligands: Synthesis, structure, spectral characterization and their application in Suzuki-Miyaura reactions
Publication date: Available online 24 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Seva Lavudi, Qazi Mohammad Junaid, Geetha Raghuthaman Advaya, Sabiah ShahulhameedAbstractSynthesis of biphenyl appended benzimidazolium N-heterocyclic carbene (NHC) L1,2H2•X2 ligands, Silver benzimidazolium complex (L1Ag)•(PF6) 1 and Palladium complexes [L1Pd(H3C–CN)(Cl)]•(PF6) 2, [L1PdCl2] 3, [L1PdBr2] 4, [L2PdI2] 5 are reported. All complexes (1–5) are characterized by NMR, ESI-MS, elemental analysis and single crystal XRD. Complex 1 serves as an efficient NHC transfer agent for the preparati...
Source: Journal of Organometallic Chemistry - October 25, 2019 Category: Chemistry Source Type: research

Selective oxidation of benzyl alcohol catalyzed by ruthenium (III) complexes derived from tridentate mer-ligands having phenolato donor
Publication date: Available online 22 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Anand Ratnam, Sheela Kumari, Rajan Kumar, U.P. Singh, Kaushik GhoshAbstractIn this work, four ruthenium complexes [Ru(L1−4)(PPh3)Cl2](1–4) containing phenolate-imine ligands [L1−4H = condensed product of 2-(1-phenylhydrazinyl)-pyridine with different substituted salicylaldehyde, H = phenolic dissociable proton] were synthesized and characterized by different spectroscopic methods like IR and UV–visible spectral studies. Solid-state structures of complexes 1 and 2 were determined by single-...
Source: Journal of Organometallic Chemistry - October 23, 2019 Category: Chemistry Source Type: research

Highly selective and efficient oxidation of benzylic alcohols with sulfate radical over metal-organic frameworks
Publication date: Available online 22 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Alireza Farrokhi, Maasoumeh Jafarpour, Mahbobeh AlipourAbstractphosphonate-based metal-organic frameworks known as STA-12(M) (M = Mn, Fe, Co, Ni), show excellent catalytic activity towards oxidation of aromatic alcohols to aldehydes with Na2S2O4/TBHP (tert-Butyl hydroperoxide) mixture. The STA-12(Fe) exhibited higher oxidation activity than other MOFs used in this work. Aldehydes were produced selectively in high yields under mild conditions at desired times. Recyclability for fourteen runs, without any noticeable de...
Source: Journal of Organometallic Chemistry - October 23, 2019 Category: Chemistry Source Type: research

Unsymmetrical 1-oxazolinyl 1’,2-Bisphosphine ferrocene silyl ether: Preparation and lithiation mechanism
Publication date: Available online 22 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Di Xu, Li Dai, Ya-Qiong Zhi, Jun Zhang, Chu XuAbstractThe synthesis of an unsymmetrical silyl-ether-modified 1-oxazolinyl 1,2′-bis(diphenylphosphine) ferrocene is proposed herein. The designed 1,2′-bisphosphine is generated from 1-bromo-l’-carboxyferrocene in six synthetic steps in moderate yield with high diastereoselectivity. Moreover, a 2,5-bisphosphine analog is afforded via the stepwise lithiation of chiral oxazolinyl ferrocene. A plausible ortho-metalation mechanism directed by the oxazoline moiet...
Source: Journal of Organometallic Chemistry - October 23, 2019 Category: Chemistry Source Type: research

Pentacoordinate silicon compounds based on 2,2′-Dihydroxyazobenzene ligand
Publication date: Available online 22 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Anastasiya S. Soldatenko, Irina V. Sterkhova, Nataliya F. LazarevaAbstractThe preparation and structures of 6,6-diorganylbenzo[d,h][1,3,6,7,2]dioxadiazasilonines containing the N→Si intramolecular dative bond are described. The complexes were characterized by NMR (1H, 13C, 29Si), IR and UV spectra. The crystal structures of 6-methyl-6-phenyl- and 6-(chloromethyl)-6-methylbenzo[d,h][1,3,6,7,2]dioxadiazasilonines were determined by X-ray diffraction.Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 23, 2019 Category: Chemistry Source Type: research

CoFe2O4@SiO2: A magnetically recyclable heterogeneous catalyst for the synthesis of spirooxindole derivatives
We described the characterization, preparation, and catalytic application of CoFe2O4@SiO2 nanoparticle. The characterization was done using transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), scanning electron microscopy coupled with energy dispersive X-ray (SEM-EDX), and Fourier transform infrared (FT-IR) analyses. Using Scherrer's approximation and powder X-ray diffractometry (XRD), an average crystallite size is determined from the full width at half the maximum of the strongest reflection. In the synthesis of spirooxindoles of malononitrile, various isatins with 1,3-dicarbonyl compounds, The Co...
Source: Journal of Organometallic Chemistry - October 22, 2019 Category: Chemistry Source Type: research

Sustainable dipolar homo-dicopper (II) dihydrazone complex as a catalyst for Sonogashira cross couplings
Publication date: Available online 21 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Mohamed Shaker S. AdamAbstractA novel dicopper (II) complex, Cu2L, was prepared form the complexation of the new polydentate ligand (H4L), bis(sodium 3-formyl-4-hydroxybenzenesulfonate)succinylhydrazone, with copper acetate. The novel homobinuclear complex was quite characterized by various physico-chemical tools and employed as a homogeneous and efficient-green catalyst for Sonogashira cross-couplings of phenylacetylene with halobenzenes under sustainable conditions. Cu2L exhibited very good catalytic performance with e...
Source: Journal of Organometallic Chemistry - October 22, 2019 Category: Chemistry Source Type: research

Binuclear half-sandwich ruthenium(II) Schiff base complexes: Synthesis, characterization, DFT study and catalytic activity for the reduction of nitroarenes
Publication date: Available online 18 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Raja Nandhini, Bellie Sundaram Krishnamoorthy, Galmari VenkatachalamAbstractThe binuclear ruthenium(II) p-cymene complexes containing Schiff base ligands of general composition [(Ru(p-cymene)Cl)2L1-6] (1-6) have been synthesized. The complexes were characterized by analytical and spectral (FT−IR, UV–Vis & 1H NMR) methods. The molecular structure of the representative complex [(Ru(p-cymene)Cl)2(L6)] (6) was determined by single-crystal X-ray diffraction and density functional theory (DFT) calculations. Fur...
Source: Journal of Organometallic Chemistry - October 19, 2019 Category: Chemistry Source Type: research

Ethylene oligomerization reactions catalyzed by homogeneous and silica immobilized NˆO Fe(II) and Co(II) complexes
Publication date: Available online 18 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Arumugam Jayamani, George S. Nyamato, Stephen O. OjwachAbstractTreatment of 2-phenyl-2-((3(triethoxysilyl)propyl)imino)ethanol (L1) and 4-nitro-2-((3(triethoxysilyl)propyl)imino)methyl)phenol (L2) with MCM-41 support afforded the respective immobilized ligands (L1im) and (L2im). Reactions of synthons L1, L2, L1im and L2im with either FeCl2.4H2O or CoCl2 led to the formation of their respective homogeneous an immobilized metal complexes [Fe(L1)2] (Fe1), [Co(L1)2] (Co1), [Fe(L2)2] (Fe2), [Co(L2)2] (Co2), [Fe(L1im)2] (Fe1im...
Source: Journal of Organometallic Chemistry - October 19, 2019 Category: Chemistry Source Type: research

Alkyl yttrium complexes of doubly cyclometallated xanthene- and naphthalene-backbone Bis(phosphinimine) ligands
Publication date: Available online 17 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Aathith Vasanthakumar, David J.H. Emslie, James F. BrittenAbstractThe synthesis of a rigid 4,5-bis(triphenylphosphinimino)-2,7-di-tert-butyl-9,9-dimethylxanthene {(Ph3PN)2XT} ligand is outlined, along with a modified synthesis for previously reported 1,8-bis(triphenylphosphinimino)naphthalene {(Ph3PN)2NAP}. Reaction of neutral (Ph3PN)2XT with [Y(CH2SiMe3)3 (THF)2] resulted in double cyclometallation, yielding the base-free monoalkyl complex, [({Ph2(C6H4)PN2XT)Y(CH2SiMe3)] (1). Layering a concentrated THF solution of 1 wi...
Source: Journal of Organometallic Chemistry - October 19, 2019 Category: Chemistry Source Type: research

Mechanism and stereospecificity of Z-enamide synthesis from salicylaldehydes with isoxazoles using DFT calculations
Publication date: Available online 17 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Baoping Ling, Yuan-Ye Jiang, Yuxia Liu, Peng Liu, Rutao Liu, Siwei BiAbstractA mechanistic study on Rh-catalyzed synthesis of stereospecific Z-enamide from salicyladehydes and isoxazoles has been performed with DFT calculations. The aldehydic C–H bond activation was found directed by anionic phenolic group rather than neutral phenolic hydroxyl, which reasonably rationalizes the reversibility of the C–H bond activation. Direct ring-opening rather than N–O oxidative addition of isoxazole, and subsequent C...
Source: Journal of Organometallic Chemistry - October 19, 2019 Category: Chemistry Source Type: research

Editorial Board
Publication date: 15 November 2019Source: Journal of Organometallic Chemistry, Volume 901Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 17, 2019 Category: Chemistry Source Type: research

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Publication date: 15 November 2019Source: Journal of Organometallic Chemistry, Volume 901Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 17, 2019 Category: Chemistry Source Type: research

Graphical abstract TOC
Publication date: 15 November 2019Source: Journal of Organometallic Chemistry, Volume 901Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 17, 2019 Category: Chemistry Source Type: research

Metal-catalysed Poly(Ethylene) terephthalate and polyurethane degradations by glycolysis
Publication date: Available online 10 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Raymundo Esquer, Juventino J. GarcíaAbstractThe recovery of Polyol from PolyUretane (PU) and Bis(2-HydroxyEthyl) Terephthalate (BHET) from Poly(Ethylene) Terephthalate (PET) from plastic waste by transesterification reactions was achieved, by using a wide scope of simple air-stable metal salts, Lewis acids, mixtures of commercially available phosphine/phosphite ligands with metal salts and low-valent [Ni(COD)2] as catalytic precursors, in the presence of ethyleneglycol as a transesterification agent. A kinetic stu...
Source: Journal of Organometallic Chemistry - October 11, 2019 Category: Chemistry Source Type: research

Stereoselective synthesis of trisubstituted alkenyl Fischer aminocarbenes through self-mediated α-haloketone olefination
Publication date: Available online 11 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Tomáš Tobrman, Marek Čubiňák, Hana Dvořáková, Dalimil DvořákGraphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 11, 2019 Category: Chemistry Source Type: research

Geometric isomerization and geometry controlled catalytic alcohol aminations of ruthenium hydride compounds containing bidentate pyrrolyl-imines
Publication date: Available online 8 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Yong-Jie Li, Hsuan-Ting Lai, Ching-Han Hu, Jie-Hong Chen, Chia-Her Lin, Jui-Hsien HuangAbstractA series of ruthenium hydride compounds containing bidentate pyrrole-imine ligands were synthesized and characterized and their properties were fully studied. Reacting [C4H3NH-(2-CH=N-R) (L1H, R = CH2-2-furanyl; L2H, R = CH2-morpholine; L3H, R = CH2-2-pyridyl) with one equivalent of n-BuLi afforded the corresponding lithium reagents (LiL1∼LiL3). Combining RuHCl(CO)(PPh3)2 with LiL1∼LiL3 in THF at 0 °C w...
Source: Journal of Organometallic Chemistry - October 10, 2019 Category: Chemistry Source Type: research

The activation and transformations of vinyl acetate at a dirhenium carbonyl center
Publication date: Available online 5 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Richard D. Adams, Poonam Dhull, Meenal Kaushal, Mark D. SmithAbstractThe reaction of Re2(CO)8 (μ-C6H5) (μ-H), 1 with vinyl acetate in methylene chloride by heating at 40 °C yielded three new products: Re3(CO)13 (μ-η2-C2H3), 3, (24% yield), Re2(CO)8 (μ-η2-O2CCH3) (μ-H), 4, (9% yield) and Re2(CO)8 (μ-η2-CHCHO2CCH3) (μ-H), 5, (13% yield). Compound 3 was also obtained in a similar yield from the reaction of Re2(CO)8 (μ-H)[μ-η2-C(H) = C(H)Bun], 2 with vinyl acetate, but comp...
Source: Journal of Organometallic Chemistry - October 7, 2019 Category: Chemistry Source Type: research

CNT-CuO catalyzed C–N bond formation for N-arylation of 2-phenylindoles
Publication date: Available online 4 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Jeongah Lim, Ji Dang Kim, Hyun Chul Choi, Sunwoo LeeAbstractCarbon nanotube–copper oxide (CNT–CuO) nanocomposites were prepared by depositing CuO nanoparticles onto functionalized CNT surfaces. The structure and elemental content of CNT–CuO were characterized using transmission electron microscopy, X-ray diffraction, and Auger electron spectroscopy. The prepared CNT-CuO was subsequently employed as a catalyst for the coupling reaction of 2-phenylindole with aryl iodides to provide the desired N-aryl 2-ph...
Source: Journal of Organometallic Chemistry - October 5, 2019 Category: Chemistry Source Type: research

Synthesis, characterization and antitumor activity of novel ferrocene-coumarin conjugates
Publication date: Available online 2 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Jing-Na Wei, Zhao-Dong Jia, Yuan-Qing Zhou, Pei-Hua Chen, Biao Li, Ning Zhang, Xin-Qi Hao, Yan Xu, Bin ZhangAbstractSeven novel ferrocene-coumarin conjugates, namely FcL1∼FcL7, were synthesized and confirmed by 1H NMR, FT-IR, elemental analysis. The crystal structure of FcL3 was determined by X-ray diffraction, showing that the dihedral angle between the coumarin and the substituted cyclopentadienyl ring was 80.67°. The electrochemical behaviors of FcL1∼FcL7 exhibited similar quasireversible redox waves, while...
Source: Journal of Organometallic Chemistry - October 4, 2019 Category: Chemistry Source Type: research

Microwave-assisted intramolecular reductive Heck in aqueous medium: Synthesis of 3,3′-Disubstituted heterocyclic compounds
Publication date: Available online 2 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Karu Ramesh, Gedu SatyanarayanaAbstractHeterocyclic products have been accomplished using microwave-assisted [Pd]-catalyzed intramolecular reductive Heck coupling. The protocol found suitable in delivering indolines, oxindoles, and dihydrobenzofurans. Notably, the process was successful in sole aqueous medium and furnished the products bearing a quaternary carbon center.Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 4, 2019 Category: Chemistry Source Type: research

Synthesis, crystal structures and antioxidant studies of Pd(II) and Ru(II) complexes of 2-(4-methoxyphenyltelluro) ethanol
Publication date: Available online 3 October 2019Source: Journal of Organometallic ChemistryAuthor(s): K.M. PrabhuKumar, H.R. Rajegowda, P. Raghavendra Kumar, R.J. ButcherAbstractPd(II) (1) and Ru(II) (2) complexes of 2-(4-methoxyphenyltelluro)ethanol (L), were synthesized using Na2 [PdCl4] and [Ru (η6-p-cymene)Cl2]2 as metal ion sources. The new complexes (1 and 2) were characterized by 1H, 13C{1H} NMR, FT-IR, UV–Visible spectroscopy and elemental analyses. Their structures were also confirmed by single crystal X-Ray diffraction. The characterizationdata revealed that the ligand L coordinated to M(II) ion as a m...
Source: Journal of Organometallic Chemistry - October 4, 2019 Category: Chemistry Source Type: research

Chemistry of macrocyclic tetracarbene complexes: Synthesis, structure, reactivity and catalytic application
Publication date: Available online 3 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Ahmed Hassoon MageedAbstractA narrow area of macrocyclic ligands, including N-heterocyclic carbene (NHC) groups and their metal complexes, is reported in the review. This review highlights recent perspectives in the fields of synthesis and structures of mononuclear macrocyclic NHC metal complexes and their catalytic applications. The review covers some transition metals (Cr, Fe, Co, Ni, Rh, Ru, Pd, Pt and Au) and group 13 and 14 metals (Sn, In and Al) with a limited number of macrocyclic tetra-NHC ligands.Graphical abstra...
Source: Journal of Organometallic Chemistry - October 4, 2019 Category: Chemistry Source Type: research

Half-sandwich Ruthenium(II) Schiff base complexes: Synthesis, characterization and effective catalysts for one-pot conversion of aldehydes to amides
Publication date: Available online 30 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Muniyappan Premkumar, Paranthaman Vijayan, Galmari VenkatachalamAbstractFive new Schiff base ligands and conformationally rigid half-sandwich organo ruthenium(II) Schiff base complexes (1–5) with the general formula [Ru(η6‒p‒cymene)(Cl)(L1-5)] (where, L = mono anionic Schiff base ligands) have been synthesized from the reaction of [{(η6‒p‒cymene)RuCl}2(μ‒Cl)2] with a bidentate Schiff bases ligands. These ruthenium(II) Schiff base complexes were fully characterized by elemental analysis, F...
Source: Journal of Organometallic Chemistry - October 1, 2019 Category: Chemistry Source Type: research

Mono- and binuclear Ru(II) arene complexes with (fluoro substituted) picolinic acid: Synthesis, characterization and cytotoxicity
Publication date: Available online 1 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Stefan Nikolić, Ljiljana E. Mihajlović-Lalić, Marija Vidosavljević, Sandra Aranđelović, Siniša Radulović, Sanja Grgurić-ŠipkaAbstractFour mono- (1–4) and four binuclear Ru(II) arene (5–8) complexes have been isolated from the reaction of [Ru(η6-benzene)Cl(μ-Cl)]2 or [Ru(η6-toluene)Cl(μ-Cl)]2 with 2-pyridinecarboxylic acid and 6-fluoro-2-pyridinecarboxylic acid. Their structural characterization included IR and NMR spectroscopy and MS spectrometry. The cytotoxic potential of ...
Source: Journal of Organometallic Chemistry - October 1, 2019 Category: Chemistry Source Type: research

Synthesis of P(FHEMA-co-MAZO-co-MAA)s copolymers and their redox and photo-responsive properties
Publication date: Available online 27 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Amin Khan, Haojie Yu, Yang Wang, Li Wang, Raja Summe Ullah, Fazal Haq, Tarig Elshaarani, Muhammad Usman, Ahsan Nazir, Kaleem-ur-Rehman NaveedAbstractDifferent copolymers (poly(2-(methacryloyloxy) ethyl ferrocene carboxylate-co-methacrylo-4-aminoazobenzene-co-methacrylic acid)s) (P(FHEMA-co-MAZO-co-MAA)s) were synthesized and their different properties were analyzed in this work. Methacrylic acid was introduced as a side group to possibly affect the photostability. The synthesized copolymers were characterized by nuclea...
Source: Journal of Organometallic Chemistry - September 29, 2019 Category: Chemistry Source Type: research

Stereochemistry of oxidative addition of methyl iodide and hydrogen peroxide to organoplatinum(II) complexes having an appended phenol group and the supramolecular chemistry of the platinum(IV) products
Publication date: Available online 27 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Ava Behnia, Mahmood Azizpoor Fard, Richard J. PuddephattAbstractThe oxidative addition chemistry of cycloneophylplatinum (II) complexes containing ligands with an appended phenol group is reported. The platinum (II) complexes [Pt (CH2CMe2C6H4) (L)] with L = 2-C6H4NCHN-2-C6H4OH (L1) or 2-C6H4NCH2–NH-n-C6H4OH (L2, n = 2; L3, n = 3; L4, n = 4) react with MeI or H2O2 to give the corresponding platinum (IV) complexes [PtIMe(CH2CMe2C6H4) (L)] or [Pt (OH)2(CH2CMe2C6H4) (L)], respectively. NMR studies ind...
Source: Journal of Organometallic Chemistry - September 29, 2019 Category: Chemistry Source Type: research

Efficient and chemoselective hydroboration of organic nitriles promoted by TiIV catalyst supported by unsymmetrical acenaphthenequinonediimine ligand
We report the synthesis, characterization, and utilization of a titanium (IV) complex [(η5-C5H5){L}TiCl2] (1) supported by a monoanionic ligand (L), N-(2, 6-diisopropyl)acenaphthenequinonediimido, as a molecular pre-catalyst for the hydroboration of nitriles. The unsymmetrical N-silylated N-(2, 6-diisopropyl)-N-(trimethylsilyl)-acenaphthenequinonediimine ligand (LSiMe3) was obtained upon the completion of a one-pot reaction between N-(2, 6-diisopropyl)iminoacenaphthenone and lithium hexamethyldisilazide in the presence of trimethylsilyl chloride in 1:1:1 M ratio at room temperature. The reaction of LSiMe3 with { &eta...
Source: Journal of Organometallic Chemistry - September 29, 2019 Category: Chemistry Source Type: research

Palladium catalyzed/counter ion tuned selective methylation of o-carboranes
Publication date: Available online 26 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Ke Cao, Cai-Yan Zhang, Tao-Tao Xu, Ji Wu, Li-Fang Ding, Linhai Jiang, Junxiao YangAbstractThe palladium catalyzed/counter ion tuned selective methylation of 9-amide-o-carboranes on B(4) and B(12) has been developed, and a series of o-carborane derivatives decorated with various groups have been synthesized with moderate yields. The in situ formed palladium species via counter ion exchange was proposed for the tunable B–H activation.Graphical abstractPalladium catalyzed/counter ion tuned selective methylation of 9...
Source: Journal of Organometallic Chemistry - September 27, 2019 Category: Chemistry Source Type: research

Theoretical investigation of the reactivity of bispentamethylcyclopentadienyl uranium(IV) bisthiolate complexes with the heteroallene molecules CS2 and CO2
Publication date: Available online 22 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Fatiha Talbi, Ludovic Castro, Farida Kias, Aziz Elkechai, Abdou Boucekkine, Michel EphritikhineAbstractThe insertion reactions of the bispentamethylcyclopentadienyl bisthiolate uranium(IV) complexes [U(Cp*)2(SR)2] (Cp* = η–C5Me5; R = Me (1), tBu (2), iPr (3), Ph (4)) with CO2 or CS2 were investigated using Density Functional Theory (DFT), solvent effects being taken into account using the SMD continuum solvation model. The optimized geometries of the bisthiolate compounds computed at the DFT/B3P...
Source: Journal of Organometallic Chemistry - September 24, 2019 Category: Chemistry Source Type: research

The synthesis and structural characterization of furanyl-1,2,3-triazole Gold(I) and its application in synthesis of enones from propargylic esters and alcohols
Publication date: Available online 19 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Wei Yao, Yilin Zhang, Xiaqing Xu, Yongchun Yang, Wei Zeng, Dawei WangabstractFuranyl-1,2,3-triazole gold(I) was designed, synthesized and characterized by X-ray crystallography, and was found to exhibit high catalytic activity for the synthesis of enones in good to high yields through a propargylic ester rearrangement and subsequent hydration. Notably, excellent E/Z selectivity was observed in these transformations. This catalyst was also effective in catalyzing the rearrangement of propargylic alcohols and hydration o...
Source: Journal of Organometallic Chemistry - September 21, 2019 Category: Chemistry Source Type: research

Methane generation via intraprotein C–S bond cleavage in cytochrome b562 reconstituted with nickel didehydrocorrin
Publication date: Available online 19 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Yuta Miyazaki, Koji Oohora, Takashi HayashiAbstractCytochrome b562 (Cyt b562) reconstituted with nickel didehydrocorrin (NiII(DDHC)), a protein-based functional model of methyl-coenzyme M reductase (MCR), was investigated to demonstrate methane generation via intraprotein cleavage of a C–S bond. NiII(DDHC) was synthesized as a model complex of an MCR cofactor known as F430 and found to show NiII/NiI redox behavior with a potential of −0.61 V vs. Ag|AgCl. This potential is slightly positive-shifted compare...
Source: Journal of Organometallic Chemistry - September 21, 2019 Category: Chemistry Source Type: research

Synthesis and structural characterization of carbosilane ruthenium(II) metallodendrons containing cymene units
Publication date: Available online 19 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Marta Maroto-Diaz, Natalia Sanz del Olmo, Sandra Garcia-Gallego, Rafael Gómez, Paula Ortega, F. Javier de la MataAbstractThe development of heterofunctional carbosilane dendrons with Schiff base ligands in the focal point and allyl or dimethylamino groups in their periphery was achieved. The presence of donor atoms with coordinative capacity enabled the synthesis of ruthenium(II) metallodendrons with cymene units. Depending on the Schiff base ligand present at the focal point of the dendrons, the functionalizati...
Source: Journal of Organometallic Chemistry - September 21, 2019 Category: Chemistry Source Type: research

1-Butyl-3-methyl-2-(diphenylphosphino)imidazalolium hexafluorophosphate as an efficient ligand for recoverable palladium-catalyzed Suzuki-Miyaura reaction in neat water
Publication date: Available online 18 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Faezeh Khosravi, Mohammad Gholinejad, David Lledó, Guillermo Grindlay, Carmen Nájera, José M. SansanoAbstractThe 1-butyl-3-methyl-2-(diphenylphosphino)imidazalolium hexafluorophosphate is prepared and used as a water-soluble ligand in the Suzuki-Miyaura reaction. This ligand and palladium chloride generates a new active catalyst for the Suzuki coupling reaction between aryl iodides or bromides with arylboronic acids in neat water. This catalyst can be recycled and reused for the coupling reaction o...
Source: Journal of Organometallic Chemistry - September 19, 2019 Category: Chemistry Source Type: research

Condensation and substitution products obtained in reactions of isomeric bromo-nitrofuraldehydes with ferrocenylamine: Electrochemistry and anti-parasitic evaluation
Publication date: Available online 19 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Patricia M. Toro, Alejandra Acuña, Mario Mallea, Michel Lapier, Mauricio Moncada-Basualto, Jonathan Cisterna, Iván Brito, Hugo KlahnAbstractThe reaction of 5-bromo-4-nitrofuraldehyde (4-NO2) with (η5-C5H4NH2)Fe(η5-C5H5) produces the Schiff base [(η5-C5H4)-N=CH-(Br-NO2-2-C4HO)]Fe(η5-C5H5) (1a) as a condensation product and the amine complex [(η5-C5H4)-NH-(CHO-NO2-2-C4HO)]Fe(η5-C5H5) (1b) as a substitution product in a 1:4 ratio, whereas the reaction between 4-bromo-5-nitrofuraldehyd...
Source: Journal of Organometallic Chemistry - September 19, 2019 Category: Chemistry Source Type: research

Concise access to aluminum containing [3.3](2,6)pyridinophane and molecular bowl using 2,6-diamidopyridine modules
Publication date: Available online 17 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Chandrakala Negi, Deependra Bawari, Sandeep Kumar Thakur, Angshuman Roy Choudhury, Sanjay SinghAbstractBy varying the relative stoichiometry of the building block bis(trimethylsilyl)–N,N′–2,6–diaminopyridine (bap) and EtAlCl2 or AlCl3, different molecular entities (mononuclear and dinuclear complexes, pyridinophane and molecular bowl) containing aluminum centres have been synthesized. Efforts to extend the approach to synthesize triazinophanes with bis(trimethylsilyl)-N,N′-2,4-diamino‒6...
Source: Journal of Organometallic Chemistry - September 18, 2019 Category: Chemistry Source Type: research

Synthesis and structural characterization of nickel(II) complexes of 20-membered macrocyclic rings bearing chelating bis(N-heterocyclic carbene) ligands
Publication date: Available online 17 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Rajesh Thapa, Stefan M. KilyanekAbstract20-Membered macrocyclic rings (Lbenz and Limid) containing two amine moieties and two N-heterocyclic carbene (NHC) moieties coordinate in a κ2 coordination mode to Ni(II) through the NHC moieties. Complexes 3a and 3b were synthesized by generating free carbenes in situ from bis-benzimidazolium bromide salts and subsequent addition of one equivalent of [Ni(DME)X2] (X = Cl, Br) at 25 °C. Free carbenes of 20-membered macrocyclic ligands Lbenz and Limid can be generat...
Source: Journal of Organometallic Chemistry - September 18, 2019 Category: Chemistry Source Type: research

C–C coupling of CH activated polar vinyl monomers by a pentaruthenium cluster complex
Publication date: Available online 16 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Richard D. Adams, Claire M. Prince, Mark D. Smith, Jonathan D. Tedder, Nutan D. WakdikarAbstractReactions of Ru5(CO)15(μ5-C), 1 with the polar vinyl monomers (PVM), methyl acrylate, vinyl acetate and N,N-dimethylacrylamide proceed by cluster opening additions accompanied by CH activation in the vinyl group of the PVM to yield olefin-activated complexes such as Ru5(μ5-C)(CO)14[η2-OCO(Me)CHCH](μ-H), 2, Ru5(μ5-C)(CO)14[η2-(MeCO2)CCH2](μ-H), 3 and Ru5(μ5-C)(CO)14[η2-OC(NMe2)CHCH](μ-H), 6. I...
Source: Journal of Organometallic Chemistry - September 18, 2019 Category: Chemistry Source Type: research

Synthesis of a Novel Mn(II)-porphyrins polycondensation polymer and its application as pseudo-capacitor electrode material
Publication date: Available online 15 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Zhiyu Cheng, Yongfu Qiu, Guiping Tan, Xueyi Chang, Qun Luo, Lifeng CuiAbstractA novel Mn(II)-porphyrins polycondensation polymer (THPP-PA-Mn) was first synthesized via esterification of meso-tetra(p-hydroxyphenyl) porphyrin (THPP) with phthalic anhydride (PA) and then metallizing with manganese acetate. Next, the THPP-PA-Mn was coated on Ni foam and applied as electrode materials for supercapacitors. Cyclic voltammetry measurements showed that THPP-PA-Mn exhibited a good reversible redox property since the Mn(II)-porph...
Source: Journal of Organometallic Chemistry - September 16, 2019 Category: Chemistry Source Type: research

Synthesis and optical properties of polymers with bithiophene condensed with disilacyclohexadiene rings and benzothiadiazole
Publication date: Available online 16 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Akinobu Naka, Sakino Takase, Joji Ohshita, Youhei Adachi, Mitsuo IshikawaAbstractNew types of polymers composed of bithiophene condensed with disilacyclohexadiene rings and benzothiadiazole were prepared by the platinum-catalyzed dehydrogenative bissilylation. UV–Vis absorption and fluorescence properties of these polymers have been investigated. The fluorescence spectra of these polymers showed only the bands ascribed to the benzothiadiazole units even when the bithiophene units were irradiated. For these polyme...
Source: Journal of Organometallic Chemistry - September 16, 2019 Category: Chemistry Source Type: research