Mechanistic investigations of Co(II)-Catalyzed C-N coupling reactions
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Khalil Ahmad, Chun-Ran Chang, Jun Li The density functional theory (DFT) method was used to investigate the mechanism of N-arylation of nitrogen heterocycles with aryl halides catalyzed by CoCl2·6H2O in the presence of different chelating ligands. Cobalt complexes of N, Nˊ-dimethylethenediamine ligand were selected as model catalytic system. Calculations were carried out for single electron transfer, oxidative addition/reductive elimination, iodine atom transfer and σ-bond metathesis mechanism for different poss...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

New ferrocenyl naphthoquinone fused crown ether chemosensors: Highly selective, kinetically and regio controlled colorimetric, beryllium ion recognition
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Yusuf Alcay, Ozgur Yavuz, Ali Gelir, Secil Kirlangıc Atasen, Kaan Karaoglu, Baris Yucel, Nurcan Şenyurt Tuzun, Ismail Yilmaz New organometallic chemosensors which are based on triad molecules, ferrocenyl naphthoquinone linearly/angularly fused crown ethers (Fc–cnq–1a and Fc–cnq–1b) bearing ferrocene, quinone, and crown ether functional groups together, were synthesized and utilized for selective sensing trace amount of Be2+ ion (5.41 μM) among other metal cations. The UV–vis spectrophotome...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis, characterization and cancer cell growth inhibition activity of ruthenium(II) complexes bearing bidentate pyrrole-imine ligands
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Guan-Hao Chen, Wohn-Jenn Leu, Jih-Hwa Guh, Chia-Her Lin, Jui-Hsien Huang A series of bidentate pyrrole-imine ligands, [C4H3NH-(2-CH=N-R)] (1, R = cyclohexenyl; 2, R = CH2CH2-1-cyclohexenyl; 3, R =  t Bu; 4, R = CH2-2-furyl; 5, R = 2-methoxylphenyl; 6, R = phenyl; 7, R = 3-nitrophenyl; 8, R = 2,6-di-isopropylphenyl; 9, R = 2,4,6-trimethylphenyl), were synthesized and their corresponding ruthenium metal compounds {Ru (ɳ 6 -p-cymene)[C4H3N-(2-CH=N-R)]Cl} (Ru-1∼Ru-9) were also synthesized....
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Polyfunctional branched metallosiloxane oligomers and composites based on them
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): N.A. Tebeneva, I.B. Meshkov, А.N. Тarasenkov, N.V. Polshchikova, A.A. Кalinina, M.I. Buzin, О.А. Serenko, Y.V. Zubavichus, D.E. Katsoulis, А.М. Мuzafarov New ethoxy-functional metallosiloxanes with a high activity in alkoxysilane polycondensation reactions have been synthesized with the use of Rebrov salts. A possibility of using the obtained methyldiethoxysiloxy derivatives of metallosiloxanes as binders for the preparation of homogeneous polydimethylsiloxane-containing compositions by realizing the concept of &...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Mechanism for Co(dppp)-catalyzed regioselective intermolecular hydroacylation of 1,3-dienes and benzaldehydes: Insights from density functional calculations
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Qingxi Meng, Fen Wang Density functional theory (DFT) was used to account and evaluate Co(dppp)-catalyzed regioselective intermolecular hydroacylation of 1,3-dienes and benzaldehydes. All species were entirely optimized at the B3LYP/6-31G(d,p) level (LANL2DZ(f) for Co). The calculations suggested this hydroacylation had two plausible reaction pathways Path I and Path II: the former consisting of three steps—the oxidative cyclization, β-hydrogen elimination, and hydrogen reductive elimination; the latter involving t...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Redox-controlled reversible micelles transition and lyotropic liquid-crystalline behavior of novel polymerizable ferrocenyl surfactants
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Zhiyu Cheng, Xueyi Chang, Yongfu Qiu, Guiping Tan, Faliang Cheng, Hongbo Fan, Biye Ren A novel photopolymerizable surfactant with ferrocenyl group, (11-ferrocenylundecyl) (ethyl methacrylate) dimethylammonium bromide (I+), was synthesized through the reaction of 11-bromoundecyl ferrocene and N,N-(dimethylamino) ethyl methacrylate. Based on the results of voltammetric cycle, the small potential difference ΔE was 72 mV, which indicates that the I+ has good redox reversibility. The critical micellar concentration (CMC) ...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Hydrosilane synthesis via catalytic hydrogenolysis of halosilanes using a metal-ligand bifunctional iridium catalyst
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Teruo Beppu, Kei Sakamoto, Yumiko Nakajima, Kazuhiro Matsumoto, Kazuhiko Sato, Shigeru Shimada Hydrogenolysis of various halosilanes was catalysed by iridium amido complexes to produce hydrosilanes. Selective monohydrogenolysis of di- and trichlorosilanes similarly proceeded, resulting in the formation of chlorohydrosilanes (R2SiHCl or RSiHCl2) as synthetically important building blocks for various organosilicon compounds. A mechanistic study supported the in-situ formation of an iridium hydride species as a key intermediate...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Protonated water-soluble N-heterocyclic carbene ruthenium(II) complexes: Synthesis, cytotoxic and DNA binding properties and molecular docking study
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Mitat Akkoç, Sevgi Balcıoğlu, Canbolat Gürses, Tugba Taskin Tok, Burhan Ateş, Sedat Yaşar New benzimidazolium salts 1a-d having methylpyridine group on the side chain, have been synthesized and reacted with Ag2O to produce Ag(I)-N-heterocyclic carbene (NHC) complexes 2a-d. Ag(I)-N-heterocyclic carbene (NHC) complexes were used as a carben transfer agents to synthesize water-soluble ruthenium(II)-NHC complexes 4a-d. All synthesized compounds were fully characterized by 1H and 13C NMR and HRMS spectroscopic tec...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis and properties of Fischer carbene complexes of N,N-dimethylaniline and anisole π-coordinated to chromium tricarbonyl
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Nora-ann Weststrate, Shalane Bouwer, Christopher Hassenrück, Nina A. van Jaarsveld, David C. Liles, Rainer F. Winter, Simon Lotz The reaction of lithiated N,N-dimethylaniline π-coordinated to Cr(CO)3 with W(CO)6 and alkylation with [Et3O][BF4] afforded the o-, m- and p-isomers of the σ,π-bimetallic complexes {η6-Me2NC6H4C(OEt)W(CO)5}Cr(CO)3 (o-, 1, m-, 2 and p-isomer, 3). A by-product of the reaction is found by the substitution of a carbonyl ligand in 1 by the aniline nitrogen atom to give {η6-C,N-o...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

The Henry reaction catalyzed by NiII and CuII complexes bearing arylhydrazones of acetoacetanilide
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Atash V. Gurbanov, Susanta Hazra, Abel M. Maharramov, Fedor I. Zubkov, Firudin I. Guseinov, Armando J.L. Pombeiro The new nickel coordination polymer [Ni(HL1) (CH3OH)2]n (1) and co-crystal H3L1∙DMF (2) were obtained by reaction of NiCl2·2H2O with 2-(2-(1,3-dioxo-1-(phenylamino)butan-2-ylidene) hydrazineyl)benzoic acid (H3L1) in the presence and absence of triethylamine, respectively, in a mixture of methanol and dimethylformamide (DMF) (20:1, v/v). Reaction of CuCl2·2H2O with H3L1 in the presence of 2,2'-(met...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

A new class of well-defined ruthenium catalysts for enantioselective transfer hydrogenation of various ketones
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Cezmi Kayan, Nermin Meriç, Khadichakhan Rafikova, Alexey Zazybin, Nevin Gürbüz, Mehmet Karakaplan, Murat Aydemir A pair of novel optically pure phosphinite ligands were synthesized by ring opening reaction of chiral amines with (R)-styrene oxide or (S)-glycidyl phenyl ether oxide using a straightforward method in high yields and their ruthenium complexes were described in detail. The ruthenium complexes proved to be highly efficient catalysts for the enantioselective hydrogenation of ketones, affording produ...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis of strained complexes of arene d6 metals with benzoylthiourea and their spectral studies
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Ibaniewkor L. Mawnai, Sanjay Adhikari, Werner Kaminsky, Mohan Rao Kollipara Halide bridged arene d6 platinum group metal precursors on treatment with thiourea derivatives (L1 and L2) yielded a series of neutral mono-dentate complexes (1–8). In general complexes have been formulated as [(arene)M(L)к1 (S)Cl2] where L = L1, M = Ru, arene = p-cymene 1; benzene 2; arene = Cp*, M = Rh 3 and Ir 4; L = L2, M = Ru, p-cymene 5; benzene 6; arene = Cp*, M = Rh 7 and Ir 8...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Improving the NLO response of bis-cyclometalated iridium( Ⅲ) complexes by modifying ligands: A DFT study
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Hui-Ying Wang, Li-Xue Jing, Hong-Qiang Wang, Jin-Ting Ye, Yong-Qing Qiu Density functional theory (DFT) have been carried out to investigate the nine recently reported iridium (Ⅲ) complexes which substituted various cyclometalated ligands (CˆN) and aryl isocyanide ancillary ligands (CNAr). The aim of this paper is to study the substituents effect on geometrical structures, electronic and second-order nonlinear optical (NLO) properties, UV-vis absorption spectra. It is found that the first hyperpolarizabilities can be ...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis of an oxo trialkyl tungsten fluoride complex and its dual reactivity with silica dehydroxylated at high temperature
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Nicolas Merle, Etienne Mazoyer, Kai C. Szeto, Pascal Rouge, Aimery de Mallmann, Elise Berrier, Laurent Delevoye, Régis M. Gauvin, Christopher P. Nicholas, Jean-Marie Basset, Mostafa Taoufik The novel complex W (=O)Np3F has been prepared by fluorination of the corresponding chloride counterpart with AgBF4. The reactivity of this complex with silica dehydroxylated at 700 °C afforded a well-defined silica supported monopodal tungsten oxo trialkyl surface species (≡SiO)W (=O)Np3. The reaction proceeds both thr...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis, characterization, antioxidant and antimicrobial activity of novel 5-arylidene-2-ferrocenyl-1,3-thiazolidin-4-ones
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Anka Pejović, Aleksandra Minić, Jovana Jovanović, Marko Pešić, Danijela Ilić Komatina, Ivan Damljanović, Dragana Stevanović, Vladimir Mihailović, Jelena Katanić, Goran A. Bogdanović Synthesis of twenty novel 5-arylidene-2-ferrocenyl-1,3-thiazolidin-4-ones has been achieved in good to excellent yields by the Knoevenagel condensation of 2-ferrocenyl-1,3-thiazolidin-4-ones with aromatic aldehydes. The reaction was performed by refluxing the mixture of reactants and potassium tert-butoxide in dioxane overnight. ...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Unprecedented formation of a μ-oxobridged polymeric copper(II) complex: Evaluation of catalytic activity in synthesis of 5-substituted 1H-tetrazoles
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Samaresh Layek, Rakesh Ganguly, Devendra D. Pathak The reaction of CuCl2·2H2O with Schiff base ligand, 4-[(2-hydroxy-3-methoxybenzylidene)amino-1,5-dimethyl-2-phenyl-1H-pyrazol-3-one] (hmdpH), in 1:1 molar ratio led to a novel and unprecedented oxo-bridged polymeric copper (II) complex, [Cu(μ-O) (hmdp)]n. The complex was isolated as crystalline solid and characterized by FTIR, UV–visible and EPR spectroscopic techniques. The molecular structure of the complex was also determined by single crystal X-ray diff...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis and characterization of a series of polymer-immobilized clusters of osmium
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Wenting Liang, Dan Li, Pui-Ling Lau, Linli Xu, Cheng Yang, Mingdeng Wei, Wesley Ting-Kwok Chan, Wai-Yeung Wong Treatment of [Os3(CO)10(NCMe)2] with an equimolar amount of 4-vinylpyridine, 4-ethynylpyridine and 4-ethylpyridine at room temperature readily gave the cluster complexes [Os3(μ-H)(CO)10(μ-NC5H3CH = CH2)] 1, [Os3(μ-H)(CO)10(μ-NC5H3C≡CH)] 2 and [Os3(CO)10(μ-H)(μ-NC5H3CH2CH3)] 3, respectively. The corresponding ruthenium analogue of 1, [Ru3(μ-H)(CO)10(μ-NC5H3CH = CH2)] 4, was als...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Deep blue phosphorescent iridium(III) cyclometalates with o-carboranes
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Minji Kim, Min Hyung Lee Heteroleptic iridium(III) cyclometalates, [5-(2-MeCB)dfppy]2Ir(LX) (2-MeCB = 2-methyl-o-carboran-1-yl; dfppy = 2-(4,6-difluorophenyl)pyridinato-C2,N; LX = picolinate (5a) or tetrakis(1-pyrazolyl)borate (5b)), with o-carborane at the 5-position of the phenyl ring of the dfppy ligand were prepared to investigate the impact of the o-carborane cage on the blue phosphorescence of complexes. X-ray diffraction analysis of 5a revealed a distorted octahedral coordination geometry around the irid...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis and evaluation of hemisalen type ligands based on chiral diamine and their use with ruthenium (II) as water-soluble catalysts for the ATH of aromatic ketones
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Mourad Boukachabia, Louisa Aribi-Zouioueche, Olivier Riant We have developed a robust ruthenium (II) complex catalyst coordinated by chiral Schiff bases for the reduction of acetophenone by ATH in water. The results show a significant effect of the nature of the chiral entity on the reactivity and the selectivity of the catalytic system. The Schiff base synthesized from the chiral diamine is more reactive and selective than the Schiff base synthesized from chiral amino alcohol. The reduction of acetophenone by catalysts coord...
Source: Journal of Organometallic Chemistry - May 21, 2018 Category: Chemistry Source Type: research

Coordination chemistry of thioether-carboranes in polynuclear metal carbonyl cluster complexes. B-H activation of thioether-carboranes by dirhenium carbonyl complexes
Publication date: 15 June 2018 Source:Journal of Organometallic Chemistry, Volume 865 Author(s): Richard D. Adams, Joseph Kiprotich Two new dirhenium compounds Re2(CO)8[μ-η2-1,3-C2B10H10(1-SCH3)](μ-H), 1 (3.2 % yield) and Re2(CO)8[μ-η2-1,4-C2B10H10(1-SCH3)](μ-H), 2 (31 % yield) were obtained from the reaction of closo-o-(1-SCH3)C2B10H11 with Re2(CO)8[μ-η2-C(H)C(H)Bun](μ-H) in an octane solution heated to reflux. Both compounds contain a C2B10H10(1-SCH3) ligand that bridges the pair of rhenium atoms by the sulfur atom and one of the boron atoms of the carborane cage. The Re – B bonds wer...
Source: Journal of Organometallic Chemistry - May 19, 2018 Category: Chemistry Source Type: research

Biographical sketch of Narayan Hosmane
Publication date: 15 June 2018 Source:Journal of Organometallic Chemistry, Volume 865 Author(s): Vladimir Bregadze, Richard D. Adams (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - May 19, 2018 Category: Chemistry Source Type: research

Preface: Organometallic chemistry of boranes and carboranes
Publication date: 15 June 2018 Source:Journal of Organometallic Chemistry, Volume 865 Author(s): Richard D. Adams, Vladimir Bregadze (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - May 19, 2018 Category: Chemistry Source Type: research

Mononuclear oxovanadium(IV) Schiff base complex: Synthesis, spectroscopy, electrochemistry, DFT calculation and catalytic activity
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Souad Dekar, Kamel Ouari, Sabrina Bendia, Douniazed Hannachi, Jean Weiss A new complex of oxovanadium, VOL has been synthesized from Schiff base ligand obtained by the condensation of o-phenylenediamine and 5-bromo-salicylaldehyde. All new compounds have been characterized by 1H NMR, IR spectra, UV–Vis spectroscopy, elemental analysis and mass spectrometry. The molar conductance data revealed that the metal complex is a non-electrolyte. Thermal analysis techniques (TGA/DTA) of the ligand and the complex were performed. Th...
Source: Journal of Organometallic Chemistry - May 19, 2018 Category: Chemistry Source Type: research

BODIPY-based Ir(III) rectangles containing bis-benzimidazole ligands with highly selective toxicity obtained through self-assembly
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Gajendra Gupta, Abhishek Das, Seon Woong Lee, Ji Yeon Ryu, Junseong Lee, Narayana Nagesh, Nripendranath Mandal, Chang Yeon Lee Selectivity for cancerous cells over normal cells remains one of the most important issues in studies of the biological activities of metal-based drugs. Herein, we show that benzimidazole-based iridium BODIPY rectangles can be used to selectively kill cancer cells. New tetranuclear (2 + 2) metalla-rectangles 1 and 2 were synthesized through the self-assembly of benzimidazole and BODIPY ligan...
Source: Journal of Organometallic Chemistry - May 19, 2018 Category: Chemistry Source Type: research

Physicochemical properties of nitrogen-doped carbon nanotubes from metallocenes and ferrocenyl imidazolium compounds
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Ayomide H. Labulo, Nonjabulo P.D. Ngidi, Bernard Omondi, Vincent O. Nyamori Shaped carbon nanomaterials (SCNMs) were synthesized via the chemical vapour deposition (CVD) technique by using typical metallocenes (ferrocene, nickelocene, cobaltocene, and ruthenocene), and more interestingly, by use of novel ferrocenyl imidazolium derivatives, containing -Cl (FcImCl), -NO2 (FcImNO2) and -CH3 (FcImCH3) substituents as catalysts. Acetonitrile was applied both as a carbon and nitrogen source at temperatures 800–900 °C. T...
Source: Journal of Organometallic Chemistry - May 13, 2018 Category: Chemistry Source Type: research

Modern computational organometallic chemistry
Publication date: 1 June 2018 Source:Journal of Organometallic Chemistry, Volume 864 Author(s): Xinzheng Yang, Thomas Strassner (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - May 10, 2018 Category: Chemistry Source Type: research

Facile one-step synthesis of palladium tellurium alloy nanorods
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Kadarkaraisamy Mariappan, Shelton J.P. Varapragasam, Matthew R. Hansen, Shivatharsiny Rasalingam, Madhubabu Alaparthi, Andrew G. Sykes A palladium-tellurium binary alloy nanomaterial was synthesized by a one-pot reaction of bis(4-methoxyphenyltelluro)methane [(4-CH3O-C6H4Te)2CH2](1) and allylpalladium (II)chloride dimer [(η3-C3H5)2Pd2(μ-Cl2)] (2) in 1:1 ratio using methylene chloride as solvent at ambient conditions. In addition to the Pd20Te7 alloy nanomaterial (3) generated, a palliadum (II) tellurolate complex [PdC1(&...
Source: Journal of Organometallic Chemistry - May 10, 2018 Category: Chemistry Source Type: research

Benzoxazole and dioxolane substituted benzimidazole –based N–heterocyclic carbene–silver(I) complexes: Synthesis, structural characterization and in vitro antimicrobial activity
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): C.R. Shahini, Gautam Achar, Srinivasa Budagumpi, Helge Müller–Bunz, Matthias Tacke, Siddappa A. Patil A novel series of 1,3–benzoxazole and 1,3–dioxolane substituted benzimidazole–based N–heterocyclic carbene (NHC) precursors (6a–b and 11a–b) and their corresponding NHC–silver(I) acetate (12a–b and 14a–b) and bis–NHC–silver(I) hexafluorophosphate complexes (13a–b and 15a–b) were synthesized and characterized by 1H NMR, 13C NMR, ATR-IR spe...
Source: Journal of Organometallic Chemistry - May 10, 2018 Category: Chemistry Source Type: research

Synthesis, characterization, and catalytic performance of Aluminum and Tin Compounds with β-diketiminato ligand
Publication date: Available online 7 May 2018 Source:Journal of Organometallic Chemistry Author(s): Yi Ding, Xin Liu, Xiaoli Ma, Yashuai Liu, Mingdong Zhong, Wenling Li, Zhi Yang, Ying Yang Two new tin (II) and tin (IV) compounds [LSnCl] (1) and [LSnCl3] (2), bearing the β-diketiminato ligand LH (L = HC(CMeNAr)2, Ar = 2,6-Et2C6H3) were synthesized by the reactions of LH with n-BuLi, then respectively with SnCl2 and SnCl4. Two new aluminum alkyl compounds, [LAlMe2] (3) and [LAlEt2] (4), were synthesized in high yield from the reactions of LH with AlMe3 and AlEt2, respectively. Compound [LAlI2] (5) was synthesi...
Source: Journal of Organometallic Chemistry - May 9, 2018 Category: Chemistry Source Type: research

Bulky 2,6-dibenzhydryl-4-methylphenyl β-diiminato derived complexes of Pd(II) and Cu(II): Efficient catalysts for Suzuki coupling and alcohol oxidation
Publication date: Available online 7 May 2018 Source:Journal of Organometallic Chemistry Author(s): Priya Saxena, Ramaswamy Murugavel Reaction of a bulky Schiff base, 2,6-dibenzhydryl-N-4-((2,6-dibenzhydryl-4-methylphenyl)imino)pent-2-en-2-yl)-4-methylaniline (Ar 2 NacNacH (Ar = 2,6-dibenzhydryl-4-methylphenyl)) with PdCl2 in toluene under reflux condition affords dinuclear [(Ar2NacNac)Pd (μ-Cl)]2 (1). Complex 1 upon crystallization from CH2Cl2-MeCN mixture affords mononuclear [(Ar2NacNac)Pd(NCMe)Cl] (2). On the other hand, the reaction of Ar 2 NacNacH with Pd(OAc)2 in toluene under reflux condition or with Cu(OAc)...
Source: Journal of Organometallic Chemistry - May 9, 2018 Category: Chemistry Source Type: research

Biological evaluation of new organoruthenium(II) metallates containing 3-acetyl-8-methoxy-2H-chromen-2-one appended CNS donor Schiff bases
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): G. Kalaiarasi, S. Rex Jeya Rajkumar, S. Dharani, Frank R. Fronczek, R. Prabhakaran A series of four new, cyclometallated ruthenium (II) complexes was synthesized from 3-acetyl-8-methoxy-2H-chromen-2-one functionalized 4(N)- substituted thiosemicarbazones and characterized through various spectral and analytical methods. The molecular structures of the complexes 1, 2 and 4 were determined by single-crystal X-ray diffraction analysis, which confirmed that the complexes possess a distorted octahedral geometry with the ligands coor...
Source: Journal of Organometallic Chemistry - May 9, 2018 Category: Chemistry Source Type: research

Synthesis and characterization of multifunctional homochiral 1-D aminoacetic acid potassium metal organic framework
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Sasikala Vadivel, Anna Lakshmi Muppidathi, Kalyana Sundar Jeyaperumal, Anbarasu Selvaraj The multifunctional homochiral aminoacetic acid potassium (AAAP) metal organic framework was synthesized and grown by hydrothermal technique. The structural arrangement can be described by alternating organic and inorganic layers which are constructed as 1D infinite chain along the b direction. These building blocks are cross linked further by nearest metal ions formed 1D tunnels like a framework also. Functional moieties exist in AAAP were...
Source: Journal of Organometallic Chemistry - May 7, 2018 Category: Chemistry Source Type: research

Syntheses and properties of 2-azaallyl Iron(I) complexes via Csp3-H bond activation
Publication date: Available online 5 May 2018 Source:Journal of Organometallic Chemistry Author(s): Junyang Xing, Hongjian Sun, Tingting Zheng, Xinghao Qi, Xiaoyan Li, Olaf Fuhr, Dieter Fenske Three novel η3-2-azaallyl iron(I) complexes, [(2-PPh2)C6H4](CH=N-CH)C6H4(4-R)]Fe(PMe3)2 (4 - 6) (R = H (4), Cl (5) and OMe (6)), were prepared through the reactions of Schiff base preligands [(2-PPh2)C6H4](CH=NCH2)C6H4(4-R)] (1 - 3) (R = H (1), Cl (2) and OMe (3)) with Fe(PMe3)4 via sp3 C-H bond activation under mild reaction conditions. Compared with the reported 2-azaallyl cobalt complexes, these are the first 2-azaall...
Source: Journal of Organometallic Chemistry - May 6, 2018 Category: Chemistry Source Type: research

Synthesis of pyridopyrimidinones by N-heterocyclic carbene palladium(II) supported on KCC-1 in aqueous solution
Publication date: Available online 5 May 2018 Source:Journal of Organometallic Chemistry Author(s): Seyed Mohsen Sadeghzadeh, Rahele Zhiani New N, N′-substituted imidazolium salts and their corresponding diiodopyridinepalladium (II) complexes were successfully synthesized and supported on KCC-1 (KCC-1/Pd-NHC-Py) has been developed for synthesis of pyridopyrimidinones, providing excellent yields of the corresponding products with remarkable chemoselectivity. This morphology ultimately leads to higher catalytic activity for the KCC-1-supported nanoparticles. The KCC-1/Pd-NHC-Py NPs were thoroughly characterized by usi...
Source: Journal of Organometallic Chemistry - May 6, 2018 Category: Chemistry Source Type: research

Half-sandwich (Cp*)RhCl2 core complexes containing sulfur donor thiosemicarbazones: Synthesis, cytotoxic activity and human serum albumin binding studies
Publication date: Available online 5 May 2018 Source:Journal of Organometallic Chemistry Author(s): Wei Su, Yuchun Li, Binghua Peng, Jiangning Xie, Peiyuan Li, Qi Xiao, Shan Huang A series of organometallic rhodium complexes with curcuminoid ligands (1−9) have been synthesized and characterized by NMR, IR, elemental analysis, and HR-ESI-mass spectrometry. The molecular structure of complex 9 has been characterized by X-ray crystallography. The in vitro activities of all the compounds have been evaluated against the HeLa, HepG2, CNE-2, SGC-7901, KB human cancer cell lines and HEK-293 T human healthy cell lines. The...
Source: Journal of Organometallic Chemistry - May 6, 2018 Category: Chemistry Source Type: research

Iridium(III)- benzoxazolyl and benzothiazolyl phosphine ligands catalyzed versatile alkylation reactions with alcohols and the synthesis of quinolines and indole
Publication date: Available online 3 May 2018 Source:Journal of Organometallic Chemistry Author(s): Shuang Huang, Si-Peng Wu, Quan Zhou, He-Zhen Cui, Xi Hong, Yue-Jian Lin, Xiu-Feng Hou A series of benzoxazolyl and benzothiazolyl phosphine ligands 4a-4g were synthesized and characterized, which prepared from commercially available 2-aminophenol/2-aminobenzenethiol and 2-bromobenzaldehyde via cyclization and phosphination. The representative ligands 4c and 4e were determined by single-crystal X-ray diffraction. The corresponding iridium complexes could be generated in situ when [Cp*IrCl2]2 (Cp* = pentamethylcyclo...
Source: Journal of Organometallic Chemistry - May 4, 2018 Category: Chemistry Source Type: research

Investigation of potential hybrid capacitor property of chelated N-Heterocyclic carbene Ruthenium(II) complex
Publication date: Available online 3 May 2018 Source:Journal of Organometallic Chemistry Author(s): Mitat Akkoç, Erdinç Öz, Serkan Demirel, Vincent Dorcet, Thierry Roisnel, Ali Bayri, Christian Bruneau, Serdar Altin, Sedat Yaşar, İsmail Özdemir The synthesis of chelated ruthenium(II) complex type Ru(η6-HMB) (NHC)Cl (NHC=N-heterocyclic carbene, HMB = hexamethylbenzene) is presented. The ruthenium(II)-NHC complex 6 was obtained in good yield and was fully characterised by NMR spectroscopy, X-ray diffraction and HRMS analysis. Electrochemical analysis by cyclic voltammetry (CV) revealed reve...
Source: Journal of Organometallic Chemistry - May 4, 2018 Category: Chemistry Source Type: research

Ultrasound-assisted Suzuki-Miyaura reaction catalyzed by Pd@Cu2(NH2-BDC)2(DABCO)
Publication date: Available online 2 May 2018 Source:Journal of Organometallic Chemistry Author(s): Leila Panahi, M. Reza Naimi-Jamal, Javad Mokhtari The highly porous metal–organic framework Cu2(NH2-BDC)2 (DABCO) (BDC = 1,4-benzenedicarboxilic acid, and DABCO = diazabicyclooctane) loaded with palladium (Pd@Cu-MOF) was found to be an effective catalyst for Suzuki C-C cross coupling accelerated with ultrasonic irradiation. The structure of the catalyst was investigated by EDX (Energy-dispersive X-ray spectroscopy), TGA (Thermogravimetric analysis), FE-SEM (Field Emission Scanning Electron Microscope), TEM (Tr...
Source: Journal of Organometallic Chemistry - May 3, 2018 Category: Chemistry Source Type: research

Efficient and selective carbonyl hydroboration catalyzed by a lithium NCN-Pincer magnesiate complex [Li(THF)4][NCN-MgBr2]
Publication date: Available online 2 May 2018 Source:Journal of Organometallic Chemistry Author(s): Man Luo, Jia Li, Qian Xiao, Shilong Yang, Fan Su, Mengtao Ma The well-defined lithium NCN-Pincer magnesiate complex [Li (THF)4][NCN-MgBr2] 2 based on a bis(imino)aryl ligand has been successfully prepared, crystallographic characterized and employed as an efficient catalyst for hydroboration of a wide range of aldehydes and ketones with pinacolborane (HBpin) at room temperature. Both aldehyde and ketone hydroboration proceeded efficiently (>99% conversion in <15 min) and could be directly carried out in a CD...
Source: Journal of Organometallic Chemistry - May 3, 2018 Category: Chemistry Source Type: research

Medicinal Applications of Gold(I/III)-Based Complexes Bearing N-Heterocyclic Carbene and Phosphine Ligands
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Bruno Dominelli, João D.G. Correia, Fritz E. Kühn Phosphines are the most studied ligands on gold-based metallodrugs, whereas N-heterocyclic carbenes (NHCs) have been emerging in the past years as potential alternative ligands for medicinal applications. Indeed, in both cases, phosphine and NHC allow the preparation of a plethora of transition metal-based complexes with attractive properties for medicinal applications. This review offers an update on phosphine and NHC ligands used in gold complexes with potential an...
Source: Journal of Organometallic Chemistry - April 28, 2018 Category: Chemistry Source Type: research

A mechanistic study of transfer hydrogenation catalyzed by cyclometallated ruthenium half-sandwich complexes
Publication date: Available online 25 April 2018 Source:Journal of Organometallic Chemistry Author(s): Noor U. Din Reshi, Dineshchakravarthy Senthurpandi, Ashoka G. Samuelson Transfer hydrogenation of aromatic ketones catalyzed by eight cyclometallated ruthenium half-sandwich complexes, including three new complexes, was examined. The catalytic process was studied using different ratios of substrate to base and base to catalyst and using a deuterated reductant. Optimum conditions for catalysis were shown to be in the presence of higher amounts of base in refluxing isopropanol. Under these conditions, the complexes were re...
Source: Journal of Organometallic Chemistry - April 25, 2018 Category: Chemistry Source Type: research

Temperature dependent regioselective synthesis of aryl tetrazole amines using copper source
Publication date: Available online 24 April 2018 Source:Journal of Organometallic Chemistry Author(s): S.N. Murthy Boddapati, A. Emmanuel Kola, Surendra Babu Kesana, Hari Babu Bollikolla One pot highly efficient and simple protocol for the construction of aryl tetrazole amines via desulphurization/substitution/electro cyclization/C-N cross coupling reactions from thiourea with the use of cheap, readily available and air stable copper source as catalyst has been described. The reaction proceeds through the in situ formation of amino tetrazole followed by successive C-N cross-coupling reaction with aryl iodide. Further the ...
Source: Journal of Organometallic Chemistry - April 24, 2018 Category: Chemistry Source Type: research

Magnetically retrievable N-heterocyclic carbene-silver complex with wingtip ferrocenyl group for Sonogashira coupling
Publication date: 1 July 2018 Source:Journal of Organometallic Chemistry, Volume 866 Author(s): Altafhusen Naikwade, Prakash Bansode, Gajanan Rashinkar A new magnetically retrievable N-heterocyclic carbene-silver complex with wingtip ferrocenyl group has been prepared by multi-step procedure. The formation of complex was confirmed on the basis of analytical techniques such as FT-IR, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-Ray diffraction (XRD), transmission electron microscopy (TEM) and VSM (vibrating sample magnetometer) analysis. The complex was successfully employed as an efficient heterogeneous c...
Source: Journal of Organometallic Chemistry - April 24, 2018 Category: Chemistry Source Type: research

Tandem hydroformylation/aldol condensation reactions: Synthesis of unsaturated ketones from olefins
Publication date: Available online 23 April 2018 Source:Journal of Organometallic Chemistry Author(s): László Kollár, Péter Pongrácz Platinum-catalysed tandem hydroformylation/aldol condensation reaction of vinyl aromatics and ketones toward the corresponding α,β-unsaturated ketones were performed under syngas atmosphere in the presence of acid co-catalysts. The in situ generated catalysts modified with various ligands proved to be efficient under applied conditions. The presence of acids promotes side reactions like hydrogenation of the alkene substrate and that of the aldehy...
Source: Journal of Organometallic Chemistry - April 23, 2018 Category: Chemistry Source Type: research

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