Theoretical investigation on the selectivity in the palladium-catalyzed reaction of oxidative carbonylation-carbocyclization-carbonylation-alkynylation of enallene
Publication date: Available online 3 November 2017 Source:Journal of Organometallic Chemistry Author(s): Yaping Li, Shenhua Miao, Zhangyu Yu, Tao Liu The mechanistic study of palladium-catalyzed reaction of oxidative carbonylation-carbocyclization-carbonylation-alkynylation of enallene was carried out by using density functional theory (DFT). Our calculated results indicate that P1 is the only product and other side products could not be obtained in the experiment. The instability of P2 is caused by the strong ring strain. Without the coordination of CO, P3 and P4 are calculated to be inaccessible. P1 is preferred over P5...
Source: Journal of Organometallic Chemistry - November 4, 2017 Category: Chemistry Source Type: research

Exploiting the reactivity of actinide fluoride bonds for the synthesis and characterization of a new class of monometallic bis(azide) uranium complexes
Publication date: Available online 4 November 2017 Source:Journal of Organometallic Chemistry Author(s): Karla A. Erickson, Alejandro G. Lichtscheidl, Marisa J. Monreal, Andrew T. Nelson, Brian L. Scott, David E. Morris, Jaqueline L. Kiplinger The terminal actinide fluoride bonds in (C5Me5)2ThF2(py) (py = pyridine) and (C5Me5)2UF2(O=PR3) (R = Me, Ph) react with two equivalents of Me3SiN3 in toluene to form the polymeric thorium bis(azide), [(C5Me5)2Th(N3)2]∞, and a new class of monometallic uranium bis(azide) complexes, (C5Me5)2U(N3)2(O=PR3), respectively. Full characterization of the novel compl...
Source: Journal of Organometallic Chemistry - November 4, 2017 Category: Chemistry Source Type: research

Compounds with platinum-metal bonds: A personal account
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): R.J. Puddephatt A review is given of the chemistry of compounds containing platinum-metal bonds, focussed on the research developed in the author's group. The synthetic methods, structures and bonding, and reactivity are treated, as well as the ability of some compounds to mimic the reactivity of platinum-containing bimetallic catalysts, which are widely used in petroleum reforming. Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - November 2, 2017 Category: Chemistry Source Type: research

Synthesis, characterization, photophysical properties of new fluorescent boron Schiff bases (BOSCHIBAs) and their application as cytoplasm staining dyes in  vitro
Publication date: 1 December 2017 Source:Journal of Organometallic Chemistry, Volume 852 Author(s): María M. Corona-López, Víctor M. Jiménez Pérez, Rodrigo Chan-Navarro, Marisol Ibarra-Rodríguez, H.V. Rasika Dias, Arturo Chávez-Reyes, Blanca M. Muñoz-Flores In this paper, we report a series of Schiff bases synthesized by the condensation reaction between 2-hydroxy-1-naphthaldehyde with aniline derivatives as well as their further coordination with diphenylborinic acid for giving the corresponding boron Schiff bases (BOSCHIBAs) (E)-N-((2-((di-phenylboryl)oxy)naphthale...
Source: Journal of Organometallic Chemistry - November 2, 2017 Category: Chemistry Source Type: research

Platinum-catalyzed reactions of 2,3-bis(dimethylsilyl)furan with alkynes
Publication date: 15 December 2017 Source:Journal of Organometallic Chemistry, Volume 853 Author(s): Akinobu Naka, Sakino Takase, Akiho Shimada, Hisayoshi Kobayashi, Mitsuo Ishikawa The synthesis and platinum-catalyzed reactions of 2,3-bis(dimethylsilyl)furan (1) have been reported. The reactions of 1 with diphenylacetylene and phenyl(trimethylsilyl)acetylene in the presence of a platinum catalyst gave the corresponding six-membered ring compounds produced from dehydrogenative double silylation of alkynes. The similar reactions of 1 with mono-substituted acetylenes such as phenylacetylene and trimethylsilylacetylene proce...
Source: Journal of Organometallic Chemistry - October 24, 2017 Category: Chemistry Source Type: research

Nano –silica supported palladium catalyst: Synthesis, characterization and application of its activity in Sonogashira cross–coupling reactions
This study deals about preparation of palladium(II) complex of 3,5–bis(2–benzothiazolyl)pyridine supported on nano silica functionalized with trimethoxysilylpropyl chloride, Pd(II)Cl2–BTP@TMSP–nSiO2. The synthesized heterogeneous catalyst was characterized by FT–IR, UV–Vis spectroscopies, field emission scanning electron microscopy, energy dispersive X–ray analysis, transmission electron microscopy and elemental analysis. Furthermore, the Pd(II)Cl2–BTP@TMSP–nSiO2 was found as a highly efficient catalyst in the Sonogashira cross–coupling of aryl halides (iodides, b...
Source: Journal of Organometallic Chemistry - October 23, 2017 Category: Chemistry Source Type: research

Copper-catalyzed C-C coupling and cyclization: Synthesis of benzo[4,5]imidazo[1,2-a]pyridines and benzo[4,5]imidazo[2,1-a]isoquinolines
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Byeong Woo Yang, Pham Duy Quang Dao, Nam Sik Yoon, Chan Sik Cho 2-(2-Bromovinyl)benzimidazoles are coupled and cyclized with 1,3-diketones in DMF in the presence of a catalytic amount of copper(I) iodide and a base to afford the corresponding benzo[4,5]imidazo[1,2-a]pyridines in moderate yields. 2-(2-Bromoaryl)benzimidazoles also react with 1,3-diketones under similar reaction conditions to give benzo[4,5]imidazo[2,1-a]isoquinolines in similar yields. Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 22, 2017 Category: Chemistry Source Type: research

Ruthenium(II) complexes of Schiff base derived from cycloalkylamines as pre-catalysts for ROMP of norbornene and ATRP of methyl methacrylate
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Maria Beatriz A. Afonso, Thais R. Cruz, Yan F. Silva, João Clécio A. Pereira, Antonio E.H. Machado, Beatriz E. Goi, Benedito S. Lima-Neto, Valdemiro P. Carvalho-Jr Ruthenium(II) complexes of Schiff base derived from cycloalkylamines (cycloalkyl = cyclopentyl (1a), cyclohexyl (1b), cycloheptyl (1c), and cyclooctyl) (1d) were synthesized: [RuCl(CyPen-Salen)(PPh3)2] (2a), [RuCl(CyHex-Salen)(PPh3)2] (2b), [RuCl(CyHep-Salen)(PPh3)2] (2c), and [RuCl(CyOct-Salen)(PPh3)2] (2d). The Schiff base-RuII complexe...
Source: Journal of Organometallic Chemistry - October 22, 2017 Category: Chemistry Source Type: research

Synthesis of stemofurans C, L and T using organomanganese arene chemistry; Revised structure for stemofuran L
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): William H. Miles, Cassidy M. Madison, Christopher Y. Kim, Daniel J. Sweitzer, Shelby D. Valent, Dasan M. Thamattoor The synthesis of stemofurans C, L and T was achieved using organomanganese arene complexes. The critical carbon-carbon bond between the C-2 position of benzofuran and the arene was established in a regioselective manner directed by the cationic manganese tricarbonyl moiety. Oxidation of the resulting dienyl complexes and cleavage of the methyl ethers gave the desired stemofuran products. The spectroscopic dat...
Source: Journal of Organometallic Chemistry - October 22, 2017 Category: Chemistry Source Type: research

Synthesis, crystal structures and properties of 1,1 ′-ferrocenyldi(bisamide) derivatives generated by the double Ugi four-component reaction
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Mei Zhao, Guang-Kui Shao, Dan-Dan Huang, Xue-Xin Lv, Dian-Shun Guo In this article, six novel 1,1′-ferrocenyldi(bisamide) derivatives 1–6 were facilely synthesized in good yields via the double Ugi four-component reaction. Their chemical structures were fully characterized by IR, NMR and HR-MS analyses. The crystal structural evaluation demonstrates that 3 and 5 adopt a linear centrosymmetric conformation, while 6 gives a v-shape conformer in the solid state. They all assemble into 2-D networks and create diver...
Source: Journal of Organometallic Chemistry - October 22, 2017 Category: Chemistry Source Type: research

Preparation, characterization and evaluation of novel 1,3,5-triaza-7-phosphaadamantane (PTA)-based palladacycles as anti-cancer agents
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): A. Blanckenberg, S. Aliwaini, S.W. Kimani, A. van Niekerk, A. Neumann-Mufweba, S. Prince, S.F. Mapolie A series of novel mononuclear 1,3,5-triaza-7-phosphaadamantane (PTA)-based palladacycles were prepared by cleaving μ-Cl binuclear orthopalladated dimers of substituted benzylidene-2,6-diisopropylphenylamines. All complexes were fully characterized using IR and NMR spectroscopy, mass spectrometry as well as elemental analysis. In-vitro evaluation of the complexes as anti-cancer agents against the breast-cancer cell line...
Source: Journal of Organometallic Chemistry - October 22, 2017 Category: Chemistry Source Type: research

Trinuclear clusters containing 2-aminopyridinate/pyrimidinate ligands as electrocatalysts for proton reduction
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Shishir Ghosh, Graeme Hogarth Triiron and triruthenium clusters containing capping 2-aminopyridinate/pyrimidinate ligands are developed as functional models of the [FeFe]-hydrogenase for electrocatalytic reduction of protons to hydrogen. The 48-electron clusters Fe3(CO)9(μ3-pyNH)(μ-H) (1), Fe3(CO)9(μ3-pymNH)(μ-H) (2), Ru3(CO)9(μ3-pyNH)(μ-H) (3) and Ru3(CO)9(μ3-pymNH)(μ-H) (4) (pyNH = 2-aminopyridinate, pymNH = 2-aminopyrimidinate) are prepared from reactions of M3(CO)12 (M =...
Source: Journal of Organometallic Chemistry - October 22, 2017 Category: Chemistry Source Type: research

4-Hydroxyaryl complexes of group 10 metals
Publication date: 15 December 2017 Source:Journal of Organometallic Chemistry, Volume 853 Author(s): Shiu-Chun So, Wai-Man Cheung, Herman H.-Y. Sung, Ian D. Williams, Wa-Hung Leung Attempts have been made to synthesize group 10 metal complexes bearing σ-bonded 4-hydroxyaryl ligands that are potential precursors to metallaquinones. Treatment of 4-bromo-2,6-di-tert-butylphenol with [Pd(PPh3)4] led to formation of the phosphaquinone Ph3P = C6H3 t Bu2-3,5-O-4 (1), whereas that with [M(PPh3)4] (M = Ni, Pt) yielded the biquinone [C6H3 t Bu2-3,5-O-4]2 (2). The solid-state structure of 1 features a short...
Source: Journal of Organometallic Chemistry - October 22, 2017 Category: Chemistry Source Type: research

A phosphine-free, atom-efficient cross-coupling of aryl iodides with triarylindiums or trialkynylindiums catalyzed by immobilization of palladium(0) in MCM-41
Publication date: 1 December 2017 Source:Journal of Organometallic Chemistry, Volume 852 Author(s): Zhiwei Lei, Haiyi Liu, Mingzhong Cai The first phosphine-free heterogeneous atom-efficient cross-coupling reaction of aryl iodides with triarylindiums or trialkynylindiums was achieved in THF at 68 °C by using 1 mol% of MCM-41-immobilized palladium(0)-Schiff base complex [MCM-41-N,N-Pd(0)] as catalyst, yielding a variety of unsymmetrical biaryls and arylalkynes in good to excellent yields. The heterogeneous palladium(0) catalyst could easily be prepared via a simple procedure from commercially readily availabl...
Source: Journal of Organometallic Chemistry - October 21, 2017 Category: Chemistry Source Type: research

Synthesis of redox-active dendronized poly(ferrocenylsilane) and application as high-performance supercapacitors
Publication date: 1 December 2017 Source:Journal of Organometallic Chemistry, Volume 852 Author(s): Zhiyu Cheng, Lirong Cai, Yongfu Qiu, Xueyi Chang, Hongbo Fan, Biye Ren A novel dendronized poly(ferrocenylsilane) (PFS-D) is prepared by ionic self-assembly of cationic poly(ferrocenylsilane) of [Fe(η-C5H4)2SiMe- (OCH2CH2NMe3I)]n (PFS) with anionic dendrons of 3,4,5-tris(n-octane-1-yloxy)- benzoic acid [(3,4,5)8G1-COOK]. XRD profiles and POM indicated the presence of the liquid crystalline phase in the PFS-D at room temperature that is resulted from the dendritic amphiphiles, which formed the end-to-end bilayer lamellar...
Source: Journal of Organometallic Chemistry - October 16, 2017 Category: Chemistry Source Type: research

New iron cyclopentadienyl complexes bearing different phosphane co-ligands: Structural factors vs. cytotoxicity
Publication date: 1 December 2017 Source:Journal of Organometallic Chemistry, Volume 852 Author(s): Adhan Pilon, Patrícia Gírio, Guilherme Nogueira, Fernando Avecilla, Harry Adams, Julia Lorenzo, M. Helena Garcia, Andreia Valente A new family of piano stool iron-cyclopentadienyl compounds bearing different phosphane co-ligands has been synthesized. All the compounds, with the general structure [Fe(Cp)(CO)(PR3)(L)]n (PR3 = triphenylphosphane, 4-(diphenylphosphino) benzoic acid or tris(4-fluorophenyl)phosphane; when L = I, n = 0; when L = 4-aminobenzonitrile, n =&nb...
Source: Journal of Organometallic Chemistry - October 16, 2017 Category: Chemistry Source Type: research

Kinetics and mechanism of the formation of CoIII(salen-type) complexes containing a nonstabilized pyridinium ylide as axial ligand: Computational and experimental studies
Publication date: 1 December 2017 Source:Journal of Organometallic Chemistry, Volume 852 Author(s): Patrizia Siega, Renata Dreos, Višnja Vrdoljak, Tomica Hrenar The reaction of [CoIII(4,4′dmsalen)(CH2Cl)(L)], where 4,4′dmsalen = 4,4′-dimethylsalen and L = solvent, with pyridine led to the isolation of [CoIII(4,4′dmsalen)(CH2py)(Cl)], in a two-step process involving a metallacyclized intermediate, cis β [CoIII(4,4′dmsalenCH2)(py)(L)]+, whereas a parallel direct conversion through the displacement of a Cl atom from the axial CH2Cl group of [CoIII(4,4′dmsale...
Source: Journal of Organometallic Chemistry - October 16, 2017 Category: Chemistry Source Type: research

Steric hindrance and electronic effects of sulfonatepropyl chain on gold center. An experimental and DFT study
Publication date: 1 December 2017 Source:Journal of Organometallic Chemistry, Volume 852 Author(s): Gabriela A. Fernández, Viviana Dorn, Alicia B. Chopa, Gustavo F. Silbestri Density Functional Theories (DFT) methods were applied to describe the catalytic effect of a series of sulfonated NHC gold(I) complexes In order to explain the experimental results obtained in the hydration of phenylacetylene in aqueous media. The complexes [1,3-bis(2,6-diisopropyl-4-sodiumsulfonatophenyl)imidazol-2-ylidene]gold(I) chloride (C1) and [(3-sulfonatepropyl)imidazol-2-ylidene]gold(I) chloride (C5) were considered representative com...
Source: Journal of Organometallic Chemistry - October 14, 2017 Category: Chemistry Source Type: research

NNpyC- and ONpyC-Pincers as functional ligands for palladium(II) complexes and assemblies
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Rena Simayi, Eric G. Hope, Kuldip Singh, Warren B. Cross, Gregory A. Solan The pyridyl-imine, -amine and -alcohol pro-ligands, 2-(2-MeC6H4)-6-{CMe=N(2,6-i-Pr2C6H3)}C5H3N (HL1), 2-(2-MeC6H4)-6-{CMe2NH(2,6-i-Pr2C6H3)}C5H3N (HL2) and 2-(2-MeC6H4)-6-(CMe2OH)C5H3N (HL3), each appended with an ortho-tolyl unit, have been synthesized by a combination of condensation and methylation approaches, all deriving from the common acetylpyridine precursor, 2-(2-MeC6H4)-6-(CMe=O)C5H3N. Treatment of HL1, HL2 and HL3 with Pd(OAc)2 results in...
Source: Journal of Organometallic Chemistry - October 12, 2017 Category: Chemistry Source Type: research

Electrophilic and nucleophilic addition reactions of Ir(1-2,5- η-CH2CHCHCHSO2)(PMe3)3 with HBF4, acetonitrile, CO, pyridine and methanol: Haptotropic behavior of the butadienesulfonyl ligand
Publication date: 1 December 2017 Source:Journal of Organometallic Chemistry, Volume 852 Author(s): Marisol Cervantes-Vásquez, Antonio A. Castillo-García, Naytzé Ortiz-Pastrana, M. Angeles Paz-Sandoval Reaction of IrCl(PMe3)3 with one equivalent of K(SO2CHCHCHCH2) led to the formation of Ir(1-2,5-η-CH2CHCHCHSO2)(PMe3)3 (1). The reaction of 1 with HBF4⋅Et2O takes place rapidly at low temperature to give the metallacycle [Ir(2,5-η-MeCHCHCHSO2)(PMe3)3]BF4 (2). Complex 2 reacts with CH3CN, CD3CN and CO to give the corresponding adducts [Ir(2,5-η-MeCHCHCHSO2)(PMe3)3(L)]BF4 (L = C...
Source: Journal of Organometallic Chemistry - October 12, 2017 Category: Chemistry Source Type: research

Study of polymorphism in 2, 2 ′-diselenobis(3-pyridinol)
Publication date: 1 December 2017 Source:Journal of Organometallic Chemistry, Volume 852 Author(s): Prasad P. Phadnis, Amit Kunwar, Mukesh Kumar, Ratikanta Mishra, Amey Wadawale, K.I. Priyadarsini, Vimal K. Jain 2,2′-Diselenobis(3-pyridinol), [2-C5H3N(3-OH)Se]2 (DISPOL) (1) and 3-hydroxypyridine-2-(1H) selone (2) were synthesized and characterized by microanalyses, NMR (1H, 13C{1H}, and 77Se{1H}) spectroscopy. The 1 on recrystallization from various organic and aqueous solutions resulted in different polymorphs which were unambiguously characterized by single crystal X-ray diffraction analyses at room as well as low...
Source: Journal of Organometallic Chemistry - October 12, 2017 Category: Chemistry Source Type: research

Ternary copper-incorporated group 8 (Ru or Fe) carbonyl chalcogenide complexes and polymers: From syntheses to applications
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Minghuey Shieh, Chia-Chi Yu Main-group element-containing mixed-metal carbonyl complexes represent an important field of contemporary chemistry. This account will focus on the development of Cu-incorporated group 8 (Ru or Fe) carbonyl chalcogenide complexes, and will represent a review and discussion, mainly from our group and others, of the rational synthetic methodologies, controlled cluster-growth processes, transformations, as well as their special applications in areas of semiconductors and catalysis. The de...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Oxidation of C-H compounds with peroxides catalyzed by polynuclear transition metal complexes in Si- or Ge-sesquioxane frameworks: A  review
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Mikhail M. Levitsky, Alexey N. Bilyachenko, Georgiy B. Shul'pin Polynuclear transition metal complexes in Si- or Ge-sesquioxane frameworks synthesized in recent years turned out to be efficient catalysts in oxidation of organic compounds with peroxides: H2O2, tert-butyl hydroperoxide (TBHP), meta-chloroperoxybenzoic acid (MCPBA). This brief review describes oxygenations by peroxides of alkanes to alkyl hydroperoxides, alcohols and ketones and benzene to phenol as well as oxidation of alcohols to the corresponding...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Ionic composite of palladium(II)/iron bis(dicarbollide) for catalytic oxidative carbonylation in the formation of diphenyl carbonate
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Algin Oh Biying, Karen Tang Yuanting, Narayan S. Hosmane, Yinghuai Zhu The carborane-based sandwich iron complex, [n-Bu4N]{Fe(3,3′)-[1,2-(PPh2)2-1,2-C2B9H9]2}, was synthesized in 53.1% yield. A catalyst composite of PdAc2/[n-Bu4N]{Fe(3,3′)-[1,2-(PPh2)2-1,2-C2B9H9]2} was found to be highly active for the oxidative carbonylation of phenol, with the formation of diphenyl carbonate (DPC). A DPC yield of 46% and a turnover number (TON) of 511 were achieved in 4 h using the composite at 110 °C...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Cobalt bis(dicarbollide) anion and its derivatives
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Barada P. Dash, Rashmirekha Satapathy, Biswa R. Swain, Chandra S. Mahanta, Bibhuti B. Jena, Narayan S. Hosmane Owing to high chemical and thermal stability, ionic character, low nucleophilicity and peculiar solubility, cobalt bis(dicarbollide) anion occupies a unique position among the metallacarboranes. Derivatives of cobalt bis(dicarbollide) find applications in different areas such as in the treatment of nuclear waste, conducting polymers and medicinal chemistry. In this paper, we have presented an overview of...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Aminoacid-derivatized Cu (II) complexes: Synthesis, DNA interactions and in  vitro cytotoxicity
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Rinky Singh, P. Rama Devi, Sharmita S. Jana, Ranjitsinh V. Devkar, Debjani Chakraborty Two different series of copper complexes, [Cu(MFL)(FcAA)H 2 O] (C1-C4) and [Cu(MFL) (BzAA)H 2 O] (C5-C8), where FcAA = ferrocenyl amino acid mannich base conjugates and BzAA = benzaldehyde amino acid mannich base conjugates have been synthesized and characterized by spectroscopic methods. The complexes have been investigated for their interactions with DNA by employing fluorescence quenching measurements, UV...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Periodical trends in [Co6E(CO)16]- clusters: Structural, synthetic and energy changes produced by substitution of P with As
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Roberto Della Pergola, Annalisa Sironi, Valentina Colombo, Luigi Garlaschelli, Stefano Racioppi, Angelo Sironi, Piero Macchi The anionic cluster [Co6As(CO)16]- was synthesized through the reaction of Na[Co(CO)4] and arsenic acid in THF at room temperature. Crystallization from MeOH/2-propanol yielded two polymorphs that feature two slightly different isomers of the anion with the same PPh4 + cation. One of the isomers is very similar to the known [Co6P(CO)16]-, formed by four edge fused triangles, partially wrapp...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Aerobic oxidative coupling of alcohols and amines towards imine formation by a dicopper(I,I) catalyst
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Indranil Dutta, Subhabrata De, Sudhir Yadav, Ranajit Mondol, Jitendra K. Bera A dicopper(I,I) complex [Cu2(L1) (Cl)2] (1), bearing a Cu2Cl2 core spanned by a naphthyridine–diimine ligand is synthesized by the treatment of CuCl with 2,7–bis(N–mesitylmethylimino)–1,8–naphthyridine (L1). The catalytic efficacy of 1 is assessed for aerobic oxidative synthesis of imines from alcohols and amines. The title complex is found to be an excellent catalyst for a wide variety of alcohols and amin...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Polyelectrochromism and electronic coupling in vinylruthenium-modified carbazoles
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Obadah S. Abdel-Rahman, Muhammad T. Jan, Steffen Oßwald, Rainer F. Winter Six carbazole-derived mono-, di- and trinuclear ruthenium complexes featuring one to three square pyramidal, five-coordinated {Ru(CO)Cl(P i Pr3)2(CHCH-)} entities were prepared by the regio- and stereospecific insertion of the hydride precursor HRu(CO)Cl(P i Pr3)2 into the CC bond of the corresponding ethynylated N-substituted carbazoles. They were characterized by IR, UV/Vis, and NMR spectroscopy, electrochemistry, and, in up to four...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Direct access to non-symmetric lithium nitriloamidinate and disymmetric dilithium bisamidinate complexes from 1,3- or 1,4- dicyanobenzene and lithium amides
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Martin Novotný, Petr Švec, Zdeňka Růžičková, Aleš Růžička Non-symmetric lithium nitriloamidinate complexes of composition 3- or 4-(N≡C)C6H4[C(NSiMe3)(NAr)]Li(D)n where Ar is phenyl, 2,6-(CH3)2C6H3 (Dmp) or 2,6-[(CH3)2CH]2C6H3 (Dipp); D means coordinated solvent - THF or diethylether and n = 1 or 2, were prepared from 1,3- or 1,4-dicyanobenzene and one molar equivalent of appropriate trimethylsilylated lithium amide. Disymmetric dilithium bisamidinate complexes of...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

An exhibition of different coordination modes displayed by 2-vinylpyrazine and 2-vinylpyridine at triosmium centres
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Md. Rafique Al-Mamun, Shishir Ghosh, Shariff E. Kabir, Graeme Hogarth The reactivity of 2-vinylpyrazine and 2-vinylpyridine at different triosmium clusters has been investigated. Room temperature reaction of 2-vinylpyrazine with formally unsaturated [Os3(CO)10(μ-H)2] or lightly-stabilized [Os3(CO)10(NCMe)2] leads to the formation of [HOs3(CO)10(μ-C4H3N2CH=CH)] (1) through β-vinyl C─H bond activation. In contrast, direct reaction between [Os3(CO)12] and 2-vinylpyrazine at elevated temperatures affords...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Synthesis and characterization of chiral phosphirane derivatives of [( μ-H)4Ru4(CO)12] and their application in the hydrogenation of an α,β-unsaturated carboxylic acid
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Ahmed F. Abdel-Magied, Maitham H. Majeed, Manuel F. Abelairas-Edesa, Arne Ficks, Radwa M. Ashour, Ahibur Rahaman, William Clegg, Matti Haukka, Lee J. Higham, Ebbe Nordlander Ruthenium clusters containing the chiral binaphthyl-derived mono-phosphiranes [(S)-([1,1′-binaphthalen]-2-yl)phosphirane] (S)-1a, [(R)-(2′-methoxy-1,1′-binaphthyl-2-yl)phosphirane] (R)-1b, and the diphosphirane [2,2′-di(phosphiran-1-yl)-1,1′-binaphthalene] (S)-1c have been synthesized and characterized. The clust...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

High-nuclearity ruthenium carbonyl cluster chemistry. 9. Ligand substitution at decaruthenium carbonyl clusters
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Michael D. Randles, Marie P. Cifuentes, Graeme J. Moxey, Achim Zahl, Rudi van Eldik, Mark G. Humphrey The mono- to tri-substituted decaruthenium cluster anions [Ru10(μ-H)(μ6-C)(CO)24–x(L)x]- [L = P(C6H4Me-4)3, AsPh3, SbPh3, x = 1–3] were prepared as their [PPh4]+ salts in moderate to good yields from reaction of [PPh4][Ru10(μ-H)(μ6-C)(CO)24] with the corresponding group 15 ligands at room temperature in acetone. The tetrakis-substituted cluster Ru10(μ6-C)(μ3-CO)(&...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Sweetness and light: Sugar-functionalized C ˆN and NˆN ligands in [Ir(CˆN)2(NˆN)]Cl complexes
We report a series of cyclometallated iridium(III) complexes [Ir(CˆN)2(NˆN)][PF6] in which a photo- and redox-active iridium scaffold is functionalized with ribofuranose substituents. The localization of HOMO and LUMO character in different parts of the iridium core is retained in the conjugates and proof-of-concept compounds with the ribofuranose attached to the CˆN and NˆN ligands confirm that the photophysical and redox properties may be refined utilizing the well-established algorithms. Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Cobalt-platinum heterometallic clusters containing N-heterocyclic carbene ligands
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Bo Yang Chor, Wei Xiang Koh, Rakesh Ganguly, Yongxin Li, Luwei Chen, Robert Raja, Weng Kee Leong The heteronuclear cobalt-platinum cluster [Co2Pt2(IPr)2(μ 2-CO)4(CO)4] can be obtained from the [Pt(IPr)] fragment through an addition reaction with [Co2(CO)8], and with subsequent cluster fragmentation, with [Co4(CO)12] and [Co3(μ 3-CH)(CO)9]; the latter reaction with the methylidyne cluster also afforded another cobalt-platinum cluster [Co4Pt2(μ6-C)(IPr)2(μ 2-CO)5(CO)6]. These are the first examples of C...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Synthesis and reductive chemistry of bimetallic and trimetallic rare-earth metallocene hydrides with (C5H4SiMe3)1 − ligands
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Megan T. Dumas, Guo P. Chen, Jasper Y. Hu, Mitchell A. Nascimento, Jeremy M. Rawson, Joseph W. Ziller, Filipp Furche, William J. Evans The reductive chemistry of [Cp'2Ln(μ–H)(THF)x]y [Ln = Y, Dy, Tb; Cp' = (C5H4SiMe3)1−; x = 2, 0 and y = 2, 3] was examined to determine if these hydrides would be viable precursors for 4fn5d1 Ln2+ ions that could form 5d1-5d1 metal–metal bonded complexes. The hydrides were prepared by reaction of the chlorides, [Cp'2Ln(μ&nd...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

The reactions of [( μ-H)M3(CO)9(CCSiMe3)] (M=Fe, Ru) with thiols: Cleavage of M-M and formation of M-S bonds in isomeric structures
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Aldo S. Estrada-Montaño, Ottmar R. Reyes-López, Vianney González-López, Marco A. Leyva, Ana L. Carrasco, A. Vela, Maria J. Rosales-Hoz The reactions of the acetylide trinuclear derivatives [(μ-H)M3(CO)9(CCSiMe3)] (M=Fe, Ru) with the thiols C6H5SH and C6F5SH were carried out. Both reactions lead to the formation of products where cleavage of M-M bonds have occurred. In the case of the iron complex, two products are obtained in the reactions with both thiols: a trinuclear complex of f...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Exploring energetics of dirhodium paddlewheel complexes with π-ligands of different topologies
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Andrey Yu Rogachev, Jingbai Li, Marina A. Petrukhina The first comprehensive theoretical exploration of the energetics of the interaction between π-ligands with isolated multiple carbon-carbon bonds (acetylene and ethylene), aromatic (benzene), planar polyaromatic (naphthalene, acenaphthalene, pyrene), curved polyaromatic (corannulene) and closed-cage C60-fullerene systems and Lewis acidic [Rh2(O2CCF3)4] complex has been carried out. Importantly, two energy decomposition schemes (EDA-NOCV and NBO-NEDA) that ar...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

The neutron diffraction structure of [Ir4(IMe)8H10]2+ polyhydride cluster: Testing the computational hydride positional assignments
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Liam S. Sharninghausen, Brandon Q. Mercado, Christina Hoffmann, Xiaoping Wang, Jesus Campos, Robert H. Crabtree, David Balcells The hydride positions not being located in our prior X-ray single crystal studies of [Ir6(IMe)8(CO)2H14]2+, [Ir4(IMe)7(CO)H10]2+ and [Ir4(IMe)8H9]3+ (IMe = 1,3-dimethylimidazol-2-ylidene) a computational approach was adopted. Our computational positional assignments have now been tested by a single crystal neutron diffraction study of the closely related [Ir4(IMe)8H10]2+ cluste...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

One-pot synthesis of ferromagnetic FePd nanoparticles from single-source organometallic precursors and size effect of metal fraction in polymer chain
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Zhengong Meng, Guijun Li, Nianyong Zhu, Cheuk-Lam Ho, Chi-Wah Leung, Wai-Yeung Wong The accurate regulation of the size of the ferromagnetic nanoparticle synthesized from the one-pot pyrolysis of metallopolymer is a challenging topic to date. A bimetallic complex TPy-FePd-1 was prepared and used as a single-source precursor to synthesize ferromagnetic FePd nanoparticles (NPs) by one-pot pyrolysis. The resultant FePd NPs have a mean particle size of 19.8 nm and show a coercivity of 1.02 kOe. In addition,...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

One-step synthesis of platinum nanoparticles by pyrolysis of a polyplatinyne polymer
In this study, we report the synthesis and characterization of a new bis(pyridyl)-coordinated platinum(II)-containing metallopolyyne polymer. It is found that this metallopolymer can act as a precursor towards the synthesis of Pt nanoparticles upon pyrolysis (600 °C, 5 h). The resultant nanoparticles were characterized by transmission electron microscope (TEM), energy-dispersive X-ray analysis (EDXA) and powder X-ray diffraction (PXRD). The results verify that monodisperse Pt nanoparticles with defined morphology can be obtained. This pilot study reveals the potential of fabricating patterned Pt nanoparticles...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Biosketch for Richard D. Adams
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Burjor Captain (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

The organometallic chemistry of polynuclear metal complexes
Publication date: 1 November 2017 Source:Journal of Organometallic Chemistry, Volumes 849–850 Author(s): Wai-Yeung (Raymond) Wong (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Simple and rapid synthesis of conducting metallopolymers, their electrochemical characterizations and application in electrochromics
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Musa A. Said, Tugba Soganci, Mehmet Karakus, Metin Ak Conducting metallopolymers have attracted a great deal of attention due to their multifunctional properties based on presence of metal centers as well as the interactions metal and p-conjugated polymer backbone. Due to their multifunctional properties, conducting metallopolymers have a great potential to use in various technological applications. In this work, starting with Lawesson's reagent and hydroxyl functionalized thiophene, a simple and rapid synthesis method for...
Source: Journal of Organometallic Chemistry - October 10, 2017 Category: Chemistry Source Type: research

Packing polymorphism of dicarbonyl-[2-(phenylamino)pent-3-en-4-onato]rhodium(I)
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Hendrik Ferreira, Marrigje Marianne Conradie, Petrus H. van Rooyen, Jeanet Conradie Depending on the crystallization conditions, the interaction between the rhodium metal centres of the separate [Rh(CH3COCHCN(Ph)CH3)(CO)2] molecular units, as described by the interplanar separation and lateral shift of two of the units, leads to packing polymorphism of [Rh(CH3COCHCN(Ph)CH3)(CO)2], which means the same molecule crystallises in different fashions, resulting in different polymorphs (α and β), with a difference...
Source: Journal of Organometallic Chemistry - October 6, 2017 Category: Chemistry Source Type: research

Immobilized Pd nanoparticles on silica-starch substrate (PNP-SSS): Efficient heterogeneous catalyst in Buchwald –Hartwig C–N cross coupling reaction
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Farhad Panahi, Fatemeh Daneshgar, Fatemeh Haghighi, Ali Khalafi-Nezhad An immobilized Pd nanoparticle on silica-starch substrate (PNP-SSS) is introduced as an efficient heterogeneous catalyst in Pd-catalyzed Buchwald–Hartwig C–N cross coupling reaction. A range of aryl amines were synthesized using reaction of aryl halides (chloride, bromide and iodide) and amines using PNP-SSS catalyst in good to excellent yields. The PNP-SSS catalyst shows high catalytic activity in C-N bond formation reaction and it is reusa...
Source: Journal of Organometallic Chemistry - October 4, 2017 Category: Chemistry Source Type: research

Synthesis and structure elucidation of allyl Pd(II) complexes of NHC ligands derived from substituted imidazo[1,5-a]quinolin-1(2H)-ylidene
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Rumen Lyapchev, Petar Petrov, Miroslav Dangalov, Nikolay G. Vassilev Nine Pd(II) complexes involving N-heterocyclic carbenes (NHCs) derived from 2-substituted and 2- and 7-substituted imidazo[1,5-a]quinolin-1(2H)-ylidene with auxiliary allylic ligands were synthesized and characterized. The structure and configuration of the complexes were elucidated on the basis of combination of dynamic NMR and DFT studies. Conformational studies in respect of hindered rotation around Pd-C bond and η3-η1-η3 pseudo allyl rotat...
Source: Journal of Organometallic Chemistry - October 4, 2017 Category: Chemistry Source Type: research

Detection of an unusual intermediate in the photolysis of an iron tricarbonyl complex
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): R.S. Anju, S. Moncho, E.N. Brothers, W.Y. Fan, S.T. Madrahimov, A.A. Bengali UV photoexcitation of trans-(η4-BDA)Fe(CO)3 (1) in alkane solvent generated a short-lived isomeric species whose identity was confirmed by infrared spectroscopy and supported by DFT calculations. This intermediate (2) exhibits an unusual ɳ2 coordination of the benzyl group to a vacant site on the iron center and is computed to be 7.8 kcal/mol less stable than 1. While thermal substitution of the BDA ligand from 1 by phosphites was found ...
Source: Journal of Organometallic Chemistry - October 2, 2017 Category: Chemistry Source Type: research

Synthesis of biscyclometalated iridium(III) acetylacetonate complexes via a 15  min bridge-splitting reaction, their characterisations and photophysical properties
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Nuray Altınölçek, Murat Aydemir, Mustafa Tavaslı, Paloma L. Dos Santos, Andrew P. Monkman Chloro-bridged diiridium(III) complexes (4a and 4b) were subjected to a bridge-splitting reaction with acetylacetone and sodium carbonate in 2-ethoxyethanol. The reaction was complete within 15 min and two novel biscyclometalated iridium(III) acetylacetonate complexes (5a and 5b) were successfully obtained in 41% and 63%, respectively. Complexes (5a and 5b) were fully characterised by 1H, 13C NMR, FT-IR and elementa...
Source: Journal of Organometallic Chemistry - September 29, 2017 Category: Chemistry Source Type: research

Organosilver(I) and organozinc(II) catalysed synthesis of quaterphenyls – Experimental and theoretical treatment
Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Bojidarka Ivanova, Michael Spiteller An essential part of molecular scaffolds of organosilver(I) catalysing reactions of C–H bond activation and C–X (X = C or O) bond formation of polysubstituted benzoic acids in polar medium represent biphenyls, 6H-benzo-[c]-chromene[6]-one, chromeno[5,4,3-cde]chromene-5,10-dione, and 4,10-dioxa-pyrene-5,9-diones. A second strand of catalytic activity is in promoting synthesis of substituted quanterphenyls. This paper is a an extend of the systematic examining of cat...
Source: Journal of Organometallic Chemistry - September 29, 2017 Category: Chemistry Source Type: research