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

Copper-catalyzed cross-coupling reactions of 5-stibano-1,2,3-triazoles with bromoalkynes under aerobic conditions: Synthesis of 5-alkynyl-1,2,3-triazoles
Publication date: Available online 9 July 2018Source: Journal of Organometallic ChemistryAuthor(s): Mizuki Yamada, Daiki Matsuura, Mai Hasegawa, Yuki Murata, Naoki Kakusawa, Mio Matsumura, Shuji YasuikeAbstractCu-catalyzed cross-coupling of 5-stibano-1,2,3-triazoles with bromoalkynes is described. The reaction of 5-stibanotriazoles with bromoalkynes under aerobic conditions in DMF, using a combination of 10 mol% of Cu2O and 1,10-phenanthroline, produced a variety of 5-alkynyltriazoles in moderate-to-excellent yields. This reaction is the first example of Cu-catalyzed C(Ar)–C(sp) bond formation using trivalent organ...
Source: Journal of Organometallic Chemistry - July 11, 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: Available online 9 July 2018Source: Journal of Organometallic ChemistryAuthor(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@SiO...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Deep blue phosphorescent iridium(III) cyclometalates with o-carboranes
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Minji Kim, Min Hyung LeeAbstractHeteroleptic 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...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Synthesis and characterization of a series of polymer-immobilized clusters of osmium
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Wenting Liang, Dan Li, Pui-Ling Lau, Linli Xu, Cheng Yang, Mingdeng Wei, Wesley Ting-Kwok Chan, Wai-Yeung WongAbstractTreatment 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, wa...
Source: Journal of Organometallic Chemistry - July 11, 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 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Samaresh Layek, Rakesh Ganguly, Devendra D. PathakAbstractThe 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...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Synthesis of Rh(I) alkylated-PTA complexes as catalyst precursors in the aqueous-biphasic hydroformylation of 1-octene
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Diteboho S. Ramarou, Banothile C.E. Makhubela, Gregory S. SmithAbstractA series of mono- and multivalent phosphorus-based ligands was synthesised by the lower-rim benzylation of the water-soluble ligand, 1,3,5-triaza-7-phosphaadamantane (PTA). These ligands were used to prepare mono-, bi- and trinuclear Rh(I) complexes whose catalytic activity, product selectivity and recyclability were evaluated in the aqueous biphasic hydroformylation of 1-octene.Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Transition metal-free regioselective cross-coupling of azine N-oxides with cymantrenyl lithium
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Alexandra A. Musikhina, Irina A. Utepova, Oleg N. Chupakhin, Valery N. Charushin, Pavel A. SlepukhinAbstractThe facile CC coupling reaction of activated forms of azaaromatics (azine-N-oxides) with cymantrenyl lithium, as a nucleophile, has first been carried out. It has been established that aromatization of intermediate adducts can be realized through either oxidative or eliminative pathways, depending on the structure of the starting azine N-oxide. In particular, the dihydroazinyl intermediates, bearing the additional N(4)...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Bisferrocene-containing ionic liquid supported on silica coated Fe3O4: A novel nanomagnetic catalyst for the synthesis of dihydropyrano[2,3-c]coumarin derivatives
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Reza Teimuri-Mofrad, Somayeh Esmati, Shabnam Tahmasebi, Mahdi Gholamhosseini-NazariAbstractNanomagnetic bisferrocene-containing ionic liquid supported on silica coated Fe3O4 (Fe3O4@SiO2@imidazol-bisFc[HCO3]) as a novel heterogeneous catalyst was synthesized and the structure and morphology of nanomagnetic catalyst was characterized by Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), transmission electron microsco...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Synthesis, characterization and catalytic activities of rhenium carbonyl complexes bearing pyridine-alkoxide ligands
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Zhiqiang Hao, Ning Li, Xinlong Yan, Xiaohui Yue, Kang Liu, Huating Liu, Zhangang Han, Jin LinAbstractThermal treatment of Re2(CO)10 with pyridine-alkoxide ligands PyC(CH2)4OH (LaH) and PyCR1R2OH (R1 = CH3, R2 = C6H5 (LbH); R1 = H, R2 = C6H5 (LcH); R1 = H, R2 = 4-CH3C6H4 (LdH); R1 = H, R2 = 4-OMeC6H4 (LeH); R1 = H, R2 = 4-ClC6H4 (LfH); R1 = H, R2 = 4-CF3C6H4 (LgH)) respectively in refluxing xylene generated a series of dirhenium carbonyl complexes [PyC(CH2)4O]2 [Re(CO)3]2 (1a) a...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Supported 4-carboxybenzyl sulfamic acid on magnetic nanoparticles as a recoverable and recyclable catalyst for synthesis of 3,4,5-trisubstituted furan-2(5H)-one derivatives
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Mohammad Mehdi Khodaei, Abdolhamid Alizadeh, Maryam HaghipourAbstract4-Carboxybenzyl sulfamic acid functionalized Fe3O4 nanoparticles as a novel catalyst was manufactured. This catalyst was characterized and evaluated in the one-pot synthesis of furan-2(5H)-one derivatives from dimethyl acetylenedicarboxylate, aryl aldehydes, and various anilines in terms of activity and reusability. The catalyst showed high catalytic activity, good recoverability and reusability, thermal stability and provides clean production of fine furan...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Palladium-catalyzed, ligand-free SN2’ substitution reactions of organoaluminum with propargyl acetates for the synthesis of multi-substituted allenes
We describe a convenient method for the synthesis of multi-substituted allenes from SN2′ substitution reactions organoaluminum with propargyl acetates: The SN2′ substitution reaction of organoaluminum (0.4 mmol) with propargyl acetates (0.5 mmol) mediated by PdCl2(dppf) (1 mol%) at 60 °C in THF without ligand could produce multi-substituted allenes in moderate to good yields (up to 98%) and high selectivities (up to 99%). Their structures have been determined by HRMS and 1H (13C)NMR data.Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Half-sandwich Ruthenium(II) arene complexes bearing the azo-azomethine ligands: Electrochemical, computational, antiproliferative and antioxidant properties
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Ayşe İnan, Ali Burak Sünbül, Mesut İkiz, Seçil Erden Tayhan, Sema Bilgin, Mahfuz Elmastaş, Koray Sayın, Gökhan Ceyhan, Muhammet Köse, Esin İspirAbstractThree novel azo-azomethine ligands have been synthesized in an accomplished one-pot synthesis protocol. The mononuclear Ru(II) complexes of these azo-azomethine dyes were prepared and characterized by the combination of elemental analyses, IR, UV–Visible spectroscopy and 1H13C NMR spectra. Solid state structures of 3, 4 and 7 were determ...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Electrophilicity of aliphatic nitrilium closo-decaborate clusters: Hyperconjugation provides an unexpected inverse reactivity order
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Valeria K. Burianova, Alexander S. Mikherdov, Dmitrii S. Bolotin, Alexander S. Novikov, Pennie Petrus Mokolokolo, Andreas Roodt, Vadim P. Boyarskiy, Vitalii V. Suslonov, Andrey P. Zhdanov, Konstantin Yu Zhizhin, Nikolay T. KuznetsovAbstractThe nucleophilic addition of 2-pyridyl carbamidoxime to the C≡N group of the aliphatic nitrilium closo-decaborate clusters (PhCH2PPh3)[B10H9NCR] (R = Me, Et, and iPr) proceeds to give 2-iminium closo-decaborates (68–88% isolated yields). A systematic kinetic and theoretical...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Ladder–like diferrocenyloxytetraalkyldistannoxanes
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Peter Frenzel, Marcus Korb, Alexander Hildebrandt, Heinrich LangAbstractTitle compounds {[R2Sn(OFc)]2O}2 (3a, R = nBu; 3b, R = Me; Fc = Fe(ƞ5–C5H4) (ƞ5–C5H5)) are accessible by treatment of R2SnO (2a,b) with equimolar amounts of FcOH (1). The molecular structures of 3a,b in the solid state confirm their planar character, consisting of three, four–membered Sn2O2 rings with penta–coordinated Sn, tri–coordinated O atoms and the alkyl groups protruding above and below the Sn4O6 motif. ...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Synthesis of new organoelement copolymers based on polydimethylsiloxanes and aminophosphonates
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Sergey A. Milenin, Rushana R. Khairova, Victor D. Myakushev, Alexander I. Buzin, Victor G. Vasiliev, Ivan I. Stoikov, Aziz M. MuzafarovAbstractBased on commercially available 3-Aminopropyl (diethoxy)methylsilane new alkoxysilane with functional aminophosphonate group - diethyl (2-((3-(diethoxy (methyl)silyl)propyl)amino)propan-2-yl)phosphonate were synthesized and characterized. Obtained functional alkoxysilane were transformed to tetrasiloxane in active medium in the presence of acetic acid and then copolymerized with octam...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Zirconocene-catalysed biodiesel synthesis from vegetable oil with high free fatty acid contents
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Yiqiang Deng, Xiaojian Hu, Lihua Cheng, Hanlu Wang, Linhai Duan, Renhua QiuAbstractA highly efficient transformation of vegetable oils into biodiesel catalysed by air-stable and water-tolerant zirconocene perfluorooctanesulfonate Lewis acid has been developed. By combining the direct esterification of free fatty acids (FFAs) and transesterification of triglycerides (TGs), the simultaneous transformation of the two components to biodiesel is achieved in good yields. Furthermore, this catalyst, when used in the synthesis of bi...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Amino acid ferrocene conjugates using sulfonamide linkages
This report presents the synthesis and characterization of mono- and bis(amino acid ester) ferrocene complexes generated using a sulfonamide linking strategy as an alternative to the more heavily explored amide linking strategy. These compounds were investigated to test their ability to form hydrogen bonding interactions both in the solid state and in solution, and were compared to the previously observed intramolecular interstrand crosslinking seen in amide-linked ferrocene constructs. Synthesized compounds also included controls that do not exhibit sulfonamide N-H bonds and thus cannot engage in hydrogen bonding. In the ...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

(C4Me4)Co-containing triple-decker complexes with bridging heterocyclic ligands
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Dmitry A. Loginov, Yulia V. Nelyubina, Alexander R. KudinovAbstract(C4Me4)Co-containing triple-decker complexes with bridging boron and phosphorus heterocyclic ligands [(C4Me4)Co(μ-η:η-L)MCp*]+ (1: M = Fe, L = C5H5BMe; 2: M = Fe, L = C4Me4P; 3a: M = Fe, L = cyclo-P5; 3b: M = Ru, L = cyclo-P5) were synthesized by photochemical reaction of [(C4Me4)Co(C6H6)]+ with sandwich compounds Cp*ML. They were isolated as salts with PF6− anion, and the structures of 1PF6, 2PF6, and 3aPF6 we...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

New salan and salen vanadium complexes: Syntheses and application in sulfoxidation catalysis
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Minaxi S. Maru, Sónia Barroso, Pedro Adão, Luis G. Alves, Ana M. MartinsAbstractNew diamine bis-phenol compounds of salan- (HOPh’CHNH(CH2)2NHCHPh’OH, Ph’ = 2,4-(CMe2Ph)C6H2, H2L1) and salen-type (HOPh’’CHN(CHPh)2NCHPh’’OH, Ph’’ = 2,4-tBuC6H2, H2L2 and HOPh’’CHN(1,1′-2-binaphthyl)NCHPh’’OH, Ph’’ = 2,4-tBuC6H2, H2L3), as well as their oxido vanadium derivatives are described. VO(OiPr)3 was used as starting ...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research

Diiron ethanedithiolate complexes with acetate ester: Synthesis, characterization and electrochemical properties
Publication date: 1 September 2018Source: Journal of Organometallic Chemistry, Volume 870Author(s): Meng Lian, Jiao He, Xiao-Yong Yu, Chao Mu, Xu-Feng Liu, Yu-Long Li, Zhong-Qing JiangAbstractFive diiron ethanedithiolate complexes bearing acetate ester have been prepared and characterized. Esterification of complex [{μ-SCH2CH(CH2OH)S}Fe2(CO)6] (1) with acetic acid in the presence of N,N′-dicyclohexylcarbodiimide and 4-dimethylaminopyridine gave the acetate ester [{μ-SCH2CH(CH2O2CCH3)S}Fe2(CO)6] (2) in 94% yield. Further treatment of complex 2 with a monophosphine ligand triphenylphosphine, tricyclohexylphosphin...
Source: Journal of Organometallic Chemistry - July 11, 2018 Category: Chemistry Source Type: research