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 6, 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 6, 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 6, 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 6, 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 6, 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 6, 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 6, 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 6, 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 6, 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 6, 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 6, 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 6, 2018 Category: Chemistry Source Type: research

Synthesis and characterization of planar chiral cyclopalladated ferrocenylimines: DNA/HSA interactions and in vitro cytotoxic activity
Publication date: 15 September 2018Source: Journal of Organometallic Chemistry, Volume 871Author(s): Yangyang Zhou, Ting Song, Yuan Cao, Guidong Gong, Yanjin Zhang, Haihang Zhao, Gang ZhaoAbstractA series of planar chiral cyclopalladated ferrocene compounds were synthesized and characterized. The absolute configurations of three compounds were determined by single-crystal X-ray analysis. The binding of the compounds with Native Calf Thymus DNA (CT-DNA) was monitored using UV-visible absorption spectrophotometry, fluorescence spectroscopy and circular dichroism (CD) studies. The results indicate that these compounds can int...
Source: Journal of Organometallic Chemistry - July 6, 2018 Category: Chemistry Source Type: research

Carbonite, the dianion of carbon dioxide and its metal complexes
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Albert Paparo, Jun Okuda Chemistry freshmen learn to distinguish between nitrate NO3 − and nitrite NO2 − or sulfate SO4 2− and sulfite SO3 2−, but how many would know about carbonite CO2 2− in contrast to carbonate CO3 2−? This is not surprising for an anion that has never been observed in solution. However, it might be a crucial intermediate in the reductive activation of CO2. This review will track back carbonite and reflect on its relevance to carbon dioxide binding in metal complexes. ...
Source: Journal of Organometallic Chemistry - July 5, 2018 Category: Chemistry Source Type: research

α-Cyanocarbanion complexes and their application in synthesis
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Alex C. Bissember, Michael G. Gardiner, Tanita S. Wierenga α-Cyanocarbanion complexes feature nitrile ligands containing deprotonated α-carbon atoms. This short review will focus on the various synthetic methods employed to prepare these complexes, the different binding modes they exhibit and their applications to the synthesis of alkylnitriles including β-hydroxy- and β-aminonitriles, the formation of unique coupling products and as key intermediates in the reaction of acrylonitrile with various substr...
Source: Journal of Organometallic Chemistry - July 5, 2018 Category: Chemistry Source Type: research

Corrigendum to ‘Synthesis, structure, photophysical and electrochemical properties of Ru(TFA)(CO)(PPh3)2(L) (L=2-phenylpyridine, 2-p-tolylpyridine) and Ru(CO)(PPhMe2)2(L)(L′) (L= TFA, H) (L′= bipyridine, L′= 4,4′-dimethylbipyridine) relationships between ancillary ligand structure and luminescent proper ties’ [J. Organomet. Chem. 849–850 (2017) 306–314]
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Shyam Pohkrel, Dan Decato, Edward Rosenberg, J.B. Alexander Ross, Michelle Terwilliger (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 5, 2018 Category: Chemistry Source Type: research

New salan and salen vanadium complexes: Syntheses and application in sulfoxidation catalysis
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Minaxi S. Maru, Sónia Barroso, Pedro Adão, Luis G. Alves, Ana M. Martins New diamine bis-phenol compounds of salan- (HOPh’CHNH(CH2)2NHCHPh’OH, Ph’ = 2,4-(CMe2Ph)C6H2, H 2 L1) and salen-type (HOPh’’CHN(CHPh)2NCHPh’’OH, Ph’’ = 2,4-tBuC6H2, H 2 L2 and HOPh’’CHN(1,1′-2-binaphthyl)NCHPh’’OH, Ph’’ = 2,4-tBuC6H2, H 2 L3), as well as their oxido vanadium derivatives are described. VO(OiPr)3 was used as starting...
Source: Journal of Organometallic Chemistry - July 4, 2018 Category: Chemistry Source Type: research

(C4Me4)Co-containing triple-decker complexes with bridging heterocyclic ligands
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Dmitry A. Loginov, Yulia V. Nelyubina, Alexander R. Kudinov (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 were d...
Source: Journal of Organometallic Chemistry - July 3, 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 3, 2018 Category: Chemistry Source Type: research

Zirconocene-catalysed biodiesel synthesis from vegetable oil with high free fatty acid contents
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Yiqiang Deng, Xiaojian Hu, Lihua Cheng, Hanlu Wang, Linhai Duan, Renhua Qiu A 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 biodies...
Source: Journal of Organometallic Chemistry - July 3, 2018 Category: Chemistry Source Type: research

Synthesis of new organoelement copolymers based on polydimethylsiloxanes and aminophosphonates
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Sergey A. Milenin, Rushana R. Khairova, Victor D. Myakushev, Alexander I. Buzin, Victor G. Vasiliev, Ivan I. Stoikov, Aziz M. Muzafarov Based 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 octamethyl...
Source: Journal of Organometallic Chemistry - July 1, 2018 Category: Chemistry Source Type: research

Synthesis, characterization and behavior in water/DMSO solution of Ru(II) arene complexes with bioactive carboxylates
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Lorenzo Biancalana, Guido Pampaloni, Stefano Zacchini, Fabio Marchetti The reactions of [RuCl(μ-Cl)(η6-p-cymene)]2 with sodium carboxylates, in methanol or acetonitrile solution, afforded the complexes [RuCl(κ2 O-RCO2)(η6-p-cymene)] (RCO2 = valproate, 1; aspirinate, 2; diclofenate, 3), in 79–96% yields. Analogously, [RuCl(κ2 O-dfCO2)(η6-benzene)], 4, was obtained in admixture with minor by-products from [RuCl(μ-Cl)(η6-benzene)]2 and sodium/silver diclofenate. The sequential reactio...
Source: Journal of Organometallic Chemistry - June 30, 2018 Category: Chemistry Source Type: research

Ladder –like diferrocenyloxytetraalkyldistannoxanes
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Peter Frenzel, Marcus Korb, Alexander Hildebrandt, Heinrich Lang Title compounds {[R2Sn(OFc)]2O}2 (3a, R =  n Bu; 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. Org...
Source: Journal of Organometallic Chemistry - June 30, 2018 Category: Chemistry Source Type: research

Electrophilicity of aliphatic nitrilium closo-decaborate clusters: Hyperconjugation provides an unexpected inverse reactivity order
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(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. Kuznetsov The nucleophilic addition of 2-pyridyl carbamidoxime to the C≡N group of the aliphatic nitrilium closo-decaborate clusters (PhCH2PPh3)[B10H9NCR] (R = Me, Et, and i Pr) proceeds to give 2-iminium closo-decaborates (68–88% isolated yields). A systematic kinetic and theoretical stu...
Source: Journal of Organometallic Chemistry - June 30, 2018 Category: Chemistry Source Type: research

Diiron ethanedithiolate complexes with acetate ester: Synthesis, characterization and electrochemical properties
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Meng Lian, Jiao He, Xiao-Yong Yu, Chao Mu, Xu-Feng Liu, Yu-Long Li, Zhong-Qing Jiang Five 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, tricyclohexylphosphine, tr...
Source: Journal of Organometallic Chemistry - June 29, 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 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Ayşe İnan, Ali Burak Sünbül, Mesut İkiz, Seçil Erden Tayhan, Sema Bilgin, Mahfuz Elmastaş, Koray Sayın, Gökhan Ceyhan, Muhammet Köse, Esin İspir Three 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 1H 13C NMR spectra. Solid state structures of 3, 4 and 7 were determined...
Source: Journal of Organometallic Chemistry - June 29, 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 - June 28, 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 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Mohammad Mehdi Khodaei, Abdolhamid Alizadeh, Maryam Haghipour 4-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-2(5H...
Source: Journal of Organometallic Chemistry - June 25, 2018 Category: Chemistry Source Type: research

Synthesis, characterization and catalytic activities of rhenium carbonyl complexes bearing pyridine-alkoxide ligands
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Zhiqiang Hao, Ning Li, Xinlong Yan, Xiaohui Yue, Kang Liu, Huating Liu, Zhangang Han, Jin Lin Thermal treatment of Re2(CO)10 with pyridine-alkoxide ligands PyC(CH2)4OH (L a H) and PyCR1R2OH (R1 = CH3, R2 = C6H5 (L b H); R1 = H, R2 = C6H5 (L c H); R1 = H, R2 = 4-CH3C6H4 (L d H); R1 = H, R2 = 4-OMeC6H4 (L e H); R1 = H, R2 = 4-ClC6H4 (L f H); R1 = H, R2 = 4-CF3C6H4 (L g H)) respectively in refluxing xylene generated a series of dirhenium carbonyl complexes [PyC(CH2)4O]2 [Re(CO)3...
Source: Journal of Organometallic Chemistry - June 24, 2018 Category: Chemistry Source Type: research

Recent applications of Stille reaction in total synthesis of natural products: An update
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Majid M. Heravi, Leyla Mohammadkhani Stille reaction is one of the most common, efficient and selective Pd-catalyzed cross-coupling reactions for the construction of C-C bonds in the art of organic synthesis. It was initially achieved and reported in 1978 b y J. K. Stille and D. Milstein. This reaction is based on organotin compounds in the presence of catalytic amount of Pd complexes which can be performed in mild reaction conditions. Nowadays, this strategy is considered as a powerful tool in the total synthesis of a...
Source: Journal of Organometallic Chemistry - June 23, 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 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Reza Teimuri-Mofrad, Somayeh Esmati, Shabnam Tahmasebi, Mahdi Gholamhosseini-Nazari Nanomagnetic 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 microscopy (T...
Source: Journal of Organometallic Chemistry - June 23, 2018 Category: Chemistry Source Type: research

Transition metal-free regioselective cross-coupling of azine N-oxides with cymantrenyl lithium
Publication date: 1 September 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Alexandra A. Musikhina, Irina A. Utepova, Oleg N. Chupakhin, Valery N. Charushin, Pavel A. Slepukhin The 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)-atom...
Source: Journal of Organometallic Chemistry - June 23, 2018 Category: Chemistry Source Type: research

Applications of cyclometalation reaction five-membered ring products
Publication date: 15 August 2018 Source:Journal of Organometallic Chemistry, Volume 869 Author(s): Iwao Omae In 1966, we first found a fact that a dicarboxylic oxygen atom coordinates to tin atom by IR spectra in cyclometalation reactions. The five-membered ring products obtained from the cyclometalation reactions are found to be more chemically stable compared with four- and six-membered ring products. Therefore, in the cyclometalation reaction, the five-membered ring products of the cyclometalation reactions are easily produced, and the great many number of papers involving the cyclometalation reaction five-membered rin...
Source: Journal of Organometallic Chemistry - June 22, 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 2018 Source:Journal of Organometallic Chemistry, Volume 870 Author(s): Diteboho S. Ramarou, Banothile C.E. Makhubela, Gregory S. Smith A 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 - June 20, 2018 Category: Chemistry Source Type: research

A straightforward synthetic route to symmetric bis(acetylide) metallates of the coinage metals
Publication date: 15 July 2018 Source:Journal of Organometallic Chemistry, Volume 867 Author(s): Tim P. Seifert, Andreas C. Boukis, Thomas J. Feuerstein, Peter W. Roesky A novel generalized synthetic procedure for bis(acetylide) metallates(I) of the coinage metals [K(THF)n(18-crown-6)][R-C≡C-M-C≡C-R] (M = Cu, Ag, Au) with varying substituents R (R = Fc, Ph, t Bu) was developed. The synthesis proceeded under mild conditions by deprotonation of the corresponding alkyne with K{N(SiMe3)2}, followed by salt metathesis reactions with CuCl, AgCl or AuCl(tht) (tht = tetrahydrothiophene) i...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Insertion of carbenoids into X-H bonds catalyzed by the cyclobutadiene rhodium complexes
Publication date: 15 July 2018 Source:Journal of Organometallic Chemistry, Volume 867 Author(s): Natalia L. Loskutova, Nikita V. Shvydkiy, Yulia V. Nelyubina, Dmitry S. Perekalin The cyclobutadiene rhodium complex [(C4Et4)RhCl]2 (generated from [(C4Et4)Rh(p-xylene)]PF6 and BnNEt3Cl) catalyzes the reaction of methyl α-diazophenylacetate with RnX-H compounds to give the insertion products methyl 2-RnX-2-phenylacetates in 70–90% yields (RnX-H = methanol, tert-butylamine, 2,6-diisopropylaniline, morpholine, diallylamine, triethylsilane, triethylamine-borane). The stoichiometric reaction of [(C4Et4)RhI]2 ...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Catalyst-free selenylation of acylacetylenes with secondary phosphine selenides and water: A short-cut to bis(2-acylvinyl) selenides
Publication date: 15 July 2018 Source:Journal of Organometallic Chemistry, Volume 867 Author(s): Pavel A. Volkov, Nina K. Gusarova, Kseniya O. Khrapova, Anton A. Telezhkin, Nina I. Ivanova, Alexander I. Albanov, Boris A. Trofimov Secondary phosphine selenides react with acylacetylenes in water to form bis(2-acylvinyl) selenides. The reaction proceeds without catalyst and organic solvent under mild conditions (70–72 °C, 3 h), the corresponding divinyl selenides being isolated as a mixture of (Z,Z)- and (E,Z)-isomers in a yield of up to 78%. Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis, molecular structure and photochemical properties of tricarbonyl and dicarbonyl derivatives of 1N- and 2N-cymantrenylalkyl-1,2,3-triazoles
Publication date: 15 July 2018 Source:Journal of Organometallic Chemistry, Volume 867 Author(s): Lyudmila N. Telegina, Elena S. Kelbysheva, Tatyana V. Strelkova, Mariam G. Ezernitskaya, Aleksander F. Smol'yakov, Yurii A. Borisov, Boris V. Lokshin, Nikolay M. Loim 1N- and 2N-cymantrenylalkylsubstituted 1,2,3-triazoles were for the first time synthesized. It was found that irradiation by a mercury lamp light with λ = 365 nm of cymantrenylalkyl-1,2,3-triazoles 3, 5–8 gives stable dicarbonyl chelates 4, 9–12. In a closed system without CO removal, intermolecular photochromic systems between t...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Hydrocarbon functionalization on palladium compounds in acidic solutions (a historical review)
Publication date: 15 July 2018 Source:Journal of Organometallic Chemistry, Volume 867 Author(s): Elisey S. Rudakov, Georgiy B. Shul'pin The first Russian works in the area of palladium-stimulated functionalization of CH compounds in acidic media have been carried out mainly in Donetsk (Rudakov), as well as in Chernogolovka (Shilov, Shteinman), and Moscow (Moiseev, Yatsimirskiy, Ryabov, Shul'pin). A substantial difference of the oxidation of arenes and alkanes was found. Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Vanadium olefin polymerization catalysts: NMR spectroscopic characterization of V(III) intermediates
Publication date: 15 July 2018 Source:Journal of Organometallic Chemistry, Volume 867 Author(s): Igor E. Soshnikov, Nina V. Semikolenova, Konstantin P. Bryliakov, Vladimir A. Zakharov, Evgenii P. Talsi Vanadium(III) species formed upon reacting α-diimine (1) and bis(imino)pyridine (5) vananadium(III) pre-catalysts with MAO, AlMe2Cl, AlMe2Cl/[Ph3C][B(C6F5)4], and AlMe3/[Ph3C][B(C6F5)4] have been characterized in detail by 1H, 2H, and 19F NMR spectroscopy; the VIII-CH3 moiety has been observed by 1H and 2H NMR spectroscopy. For complex 1, zwitterion-like species [L′VIIIR2 +···MeMAO−] a...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Biosketch for Irina P. Beletskaya
Publication date: 15 July 2018 Source:Journal of Organometallic Chemistry, Volume 867 Author(s): Georgiy Borisovich Shul’pin, Richard D. Adams (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Preface: Organometallic chemistry in Russia
Publication date: 15 July 2018 Source:Journal of Organometallic Chemistry, Volume 867 Author(s): Georgiy Borisovich Shul’pin, Richard D. Adams (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Synthesis, characterization and application of Nd-Salen schiff base complex Immobilized Mesoporous Silica in solvent free synthesis of pyranopyrazoles
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Ryhan Abdullah Rather, Zeba N. Siddiqui The novel Nd-Salen Schiff base complex Immobilized Mesoporous Silica was synthesized by adsorption of NdCl3 on mesoporous-SiO2 and characterized soundly with various spectroscopic techniques such as FT-IR, Powder XRD, BET, TGA, SEM/EDX, TEM and ICP-AES analysis. The properties of mesoporous silica surface facilitate and accelerate the synthesis of desired products in high yields. All reactions progressed with high efficacy under solvent-free conditions and gave excellent yields avoiding...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

Radiosynthesis and evaluation of novel 99mTc(CO)3-labelled thymidine dithiocarbamate derivatives for tumor imaging with SPECT
Publication date: 1 August 2018 Source:Journal of Organometallic Chemistry, Volume 868 Author(s): Xiaojiang Duan, Qing Ruan, Qianqian Gan, Xiaoqing Song, Si'an Fang, Xuran Zhang, Junbo Zhang A series of novel thymidine dithiocarbamate derivatives (DTC-TdR) were successfully synthesized and then radiolabelled using [99mTc(CO)3]+ core with high yields. The chemical characterizations of 99mTc(CO)3-labelled dithiocarbamate derivatives have been carried out by preparing their corresponding rhenium complexes. The radiotracers were stable in vitro, and the partition coefficient results indicated that they were lipophilic. T...
Source: Journal of Organometallic Chemistry - June 18, 2018 Category: Chemistry Source Type: research

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