Synthesis and characterization of alkenyl and alkyl substituted group 4 metallocene dichloride complexes: Applications in ethylene polymerization
Publication date: Available online 14 August 2019Source: Journal of Organometallic ChemistryAuthor(s): Jesús Ceballos-Torres, Santiago Gómez-Ruiz, Mariano Fajardo, Ana B. Pinar, Sanjiv PrasharAbstractThe alkenyl substituted zirconocene complexes, [Zr(η5-C5H4{CMeRCH2CH2CH = CMe2})2Cl2] (R = Me (1), Ph (2) were prepared from the reaction of the lithium derivative Li(C5H4{CMeRCH2CH2CH = CMe2} (R = Me, Ph) with zirconium tetrachloride. The bulky alkyl substituted cyclopentadienyl ligand precursor was prepared as its fulvene derivative (C5H4) = CMeCH2CHMe2 (3) via the reaction of cyclopenta...
Source: Journal of Organometallic Chemistry - August 15, 2019 Category: Chemistry Source Type: research

Solvent-free synthesis, characterization, biological activity of schiff bases and their metal (II) complexes derived from ferrocenyl chalcone
Publication date: Available online 14 August 2019Source: Journal of Organometallic ChemistryAuthor(s): Yuting Liu, Lisha Yang, Dawei Yin, Yang Dang, Lan Yang, Qian Zou, Jie Li, Jiaxi SunAbstractA novel efficient method for the synthesis of ferrocenyl chalcone Schiff bases and their metal (II) complexes has been developed. Schiff bases were synthesized with TsOH (p-toluenesulfonic acid) as catalyst and complexed with metal (II) salts (Zn (II), Pb (II), Cd (II), Ni (II)). The compounds were characterized by various spectroscopic techniques and elemental analysis. The thermal stability of the complexes was performed by thermo...
Source: Journal of Organometallic Chemistry - August 15, 2019 Category: Chemistry Source Type: research

Hydrogenation of carbon dioxide to formate by α-diimine RuII, RhIII, IrIII complexes as catalyst precursors
Publication date: Available online 15 August 2019Source: Journal of Organometallic ChemistryAuthor(s): Nyasha Makuve, Gift Mehlana, Richard Tia, James Darkwa, Banothile C.E. MakhubelaAbstractThe conversion of CO2 into valuable chemicals has been of major interest because it is cheap and readily available. The concept of reducing CO2 pollution via its utilization into valuable products has inspired us to synthesise novel 4,4'-((1Z)-butane-2,3-diylidenebis(azanylylidene))dibenzoic acid (L) metal complexes {[(L)RuII] (C1), [(L)RhIII] (C2), [(L]IrIII (C3)} complexes for catalytic hydrogenation of CO2. The α-diimine metal...
Source: Journal of Organometallic Chemistry - August 15, 2019 Category: Chemistry Source Type: research

Preparation of heptafluoronaphthyllithiums and -magnesiums: An unexpected difference in the reactivity of isomers C10F7H and C10F7Br towards organolithium and organomagnesium compounds
Publication date: Available online 11 August 2019Source: Journal of Organometallic ChemistryAuthor(s): M.M. Shmakov, V.V. Bardin, S.A. Prikhod'ko, N. Yu AdoninAbstractSignificant differences in the reactivity of isomeric heptafluoronaphthalenes and bromoheptafluoronaphthalenes towards organolithium and organomagnesium compounds were found. Metalation of polyfluorinated naphthalenes 2-C10F7X (X = H, Br) occurs easily under the action of bases (BuLi, t-BuLi, LDA) as well as EtMgBr (X = Br) in ether. This fact was proven by 19F NMR spectroscopy and by trapping of 2-C10F7M (M = Li, MgBr, Mg(2-C10F7)) with electroph...
Source: Journal of Organometallic Chemistry - August 11, 2019 Category: Chemistry Source Type: research

Synthesis, structure and bonding modes of pyrazine based ligands of Cp*Rh and Cp*Ir complexes: The study of in-vitro cytotoxicity against human cell lines
Publication date: Available online 8 August 2019Source: Journal of Organometallic ChemistryAuthor(s): Agreeda Lapasam, Emma Pinder, Roger M. Phillips, Werner Kaminsky, Mohan Rao KolliparaAbstractThe reaction of multidentate pyrazine based ligands was explored towards Cp*rhodium and Cp*iridium precursors. Mononuclear and dinuclear complexes formed by the ratio-based reaction between ligand and metal precursor. The representative complexes have been determined by single crystal X-ray diffraction studies. Cytotoxicity study of the ligands and their complexes are evaluated against human colorectal cancer cell lines HT-29, HCT-...
Source: Journal of Organometallic Chemistry - August 9, 2019 Category: Chemistry Source Type: research

Palladium nanoparticles decorated on a novel polyazomethine as a highly productive and recyclable catalyst for Suzuki coupling reactions and 4-nitrophenol reduction
This report displays the procedure in preparation of fast, highly productive, reusable, and easily retrievable Pd nanoparticles (NPs) as a heterogeneous catalyst (Pd NPs@P(3-MPAP)) immobilized on a novel polyazomethine with phenol group, Poly(3-methyl-4-((pyridin-2-ylmethylene)amino)phenol) (P(3-MPAP)), and the investigation of its catalytic efficiency in fabrication of several biaryl compounds by Suzuki coupling reactions and reduction of 4-nitrophenol to 4-aminophenol. The structures of the synthesized monomer, polymer support material and nanocatalyst were identified by UV–Vis, FT-IR, 1H NMR, TGA, XRD, SEM and EDS...
Source: Journal of Organometallic Chemistry - August 8, 2019 Category: Chemistry Source Type: research

Efficient transfer of dithiolene ligands from nickel to cyclopentadienyl ruthenium complexes
Publication date: Available online 6 August 2019Source: Journal of Organometallic ChemistryAuthor(s): Harry Adams, Deena M. Alasali, Michael J. Morris, Sarah A. Morris, Craig C. Robertson, Voirrey L. RobinsonAbstractThe reaction of [CpRu(PPh3)2Cl] with [Ni(S2C2Ph2)2] in refluxing toluene produces the purple salt [CpRu(S2C2Ph2) (PPh3)][Cl], containing a rare example of a cationic dithiolene complex, in excellent yield. Chemical or electrochemical reduction of [CpRu(S2C2Ph2) (PPh3)][Cl] causes a colour change to blue and formation of the corresponding neutral species [CpRu(S2C2Ph2) (PPh3)]. In contrast the reaction of [CpRu(...
Source: Journal of Organometallic Chemistry - August 7, 2019 Category: Chemistry Source Type: research

Mechanochemical C–H bond activation: Synthesis of the tuckover hydrides, (C5Me5)2Ln(μ-H)(μ-η1:η5-CH2C5Me4)Ln(C5Me5) from solvent-free reactions of (C5Me5)2Ln(μ-Ph)2BPh2 with KC5Me5
Publication date: Available online 2 August 2019Source: Journal of Organometallic ChemistryAuthor(s): David H. Woen, Jessica R.K. White, Joseph W. Ziller, William J. EvansAbstractAttempts to synthesize the sterically crowded complexes (C5Me5)3Ln of the smallest lanthanide metals, Ln = Tm, and Lu, from (C5Me5)2Ln(μ-Ph)2BPh2 and KC5Me5 via mechanochemical methods has revealed C–H bond activation chemistry: the tuckover hydride complexes, (C5Me5)2Ln(μ-H)(μ-η1:η5-CH2C5Me4)Ln(C5Me5), were observed in low crystalline yields. In the case of Ln = Yb, attempts to synthesize the cationic precursor, (C5...
Source: Journal of Organometallic Chemistry - August 3, 2019 Category: Chemistry Source Type: research

Diels-Alder route to norbornane derived vicinal phosphane/borane Frustrated Lewis Pairs for the metal-free catalytic hydrogenation of α, β-unsaturated ketones
Publication date: Available online 1 August 2019Source: Journal of Organometallic ChemistryAuthor(s): Christian Wölke, Constantin G. Daniliuc, Gerald Kehr, Gerhard ErkerAbstractThe [4 + 2]-cycloaddition reaction of the (dimesitylphosphino)cyclopentadienes 5a,b with N-phenylmaleimide gave the norbornene derivative 9. Its reduction with LiAlH4 produced the N-phenylpyrrolidino-annulated system 10. Treatment with Piers' borane gave the respective P/B FLP 12 as the major product, which cleaved dihydrogen under mild conditions to yield the phosphonium/hydrido borate product 14. Reaction of the phosphino-norbornene...
Source: Journal of Organometallic Chemistry - August 2, 2019 Category: Chemistry Source Type: research

Synthesis, characterization of novel Nickel(II) complexes with PxNy-Type ligands and their application in reduction of ketones
Publication date: Available online 31 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Zhe Wang, Shen-Luan Yu, Zan-Bin Wei, Dong-Li An, Yan-Yun Li, Jing-Xing GaoAbstractNovel nickel(II) complexes 1 and 2 could be conveniently prepared using PxNy-type ligands and easily available NiCl2·6H2O as a starting material. Furthermore, we obtained the single crystals suitable for X-ray diffraction to confirm the structure of these two nickel(II) complexes. With the well-designed nickel(II) complex, the hydrogenation of a wide range of ketones proceeded smoothly under relative mild reaction conditions, affording ...
Source: Journal of Organometallic Chemistry - August 1, 2019 Category: Chemistry Source Type: research

Solvent mediated complete trans-to-cis isomerization of [Ru(polypyridine)(CO)2Cl2] complexes
Publication date: Available online 31 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Dai Oyama, Shuya Kainuma, Komi Akatsuka, Ryosuke Abe, Tsugiko TakaseAbstractTrans(Cl)-[Ru(polypyridine)(CO)2Cl2] complexes were completely isomerized to the corresponding cis(Cl)-isomers in the absence of a superacid or a reducing agent. X-ray crystallography was used to determine the molecular structures of the prepared cis-isomers. Spectroscopic, structural, and computational studies indicated that the isomerization occurs via an ethoxycarbonyl intermediate ({Ru–C(O)OC2H5}+), which is formed by the reaction of the s...
Source: Journal of Organometallic Chemistry - August 1, 2019 Category: Chemistry Source Type: research

A QTAIM and DFT study of the dizinc bond in non-symmetric [CpZn2Ln] complexes
Publication date: Available online 31 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Regla Ayala, Agustín GalindoAbstractSeveral [Zn2L2] and [CpZn2Ln] dizinc compounds have been studied by density functional theory (DFT) and quantum theory of atoms in molecules (QTAIM) in order to compare the nature and topology of the Zn–Zn bond in symmetrical and non-symmetrical complexes. The stability of these complexes haven been evaluated on the basis of the formation energies. The disproportionation reaction has also been analysed indicating that symmetric complexes are less stable than non-symmetric one...
Source: Journal of Organometallic Chemistry - August 1, 2019 Category: Chemistry Source Type: research

Homoleptic ruthenium complexes with N-heterocyclic carbene ligands as photosensitizers in the photocatalytic generation of H2 from water
Publication date: Available online 31 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Javier Torres, M. Carmen Carrión, Jorge Leal, Gregorio Castañeda, Blanca R. Manzano, Félix A. JalónAbstractThere is great interest in the catalytic photoreduction of water to give hydrogen as a fuel to harness solar energy and a series of ruthenium complexes has been synthesized and tested as photosensitizers in this photoreduction process. There are very few precedents for N-heterocyclic carbene complexes in this field. The complexes obtained in this work were of the type [Ru(:CˆNˆC)2]...
Source: Journal of Organometallic Chemistry - August 1, 2019 Category: Chemistry Source Type: research

Electrophilic amination of Cu(I) catalyzed phenylmagnesium bromide with N,O-bis(Trimethylsilyl)hydroxylamine in THF:N-donor solvent. Control of C–N and C–O chemoselectivity
Publication date: Available online 31 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Didem Kahya, Fatma EroğluAbstractReaction of PhMgBr with (Me3Si)HNO(SiMe3)[TMSHA] in the presence of CuI or CuCN catalysis (10–20 mol %) in THF:cosolvent (cosolvent = HMPA or TMEDA) at room temperature can provide an atom-economic and step-economic access for arylamine synthesis starting from aryl Grignard reagents. Chemoselectivity to yield C–N or C–O coupling can be controlled by changing reaction parameters. Cu(I) catalyzed reaction of PhMgBr in THF or in THF:HMPA (or TMEDA) affords both C–...
Source: Journal of Organometallic Chemistry - August 1, 2019 Category: Chemistry Source Type: research

Hyperbranched polyethylenimine-supported copper(II) ions as a macroliganted homogenous catalyst for strict click reactions of azides and alkynes in water
Publication date: Available online 30 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Hicham Ben El Ayouchia, Hamid ElMouli, Lahoucine Bahsis, Hafid Anane, Rachid Laamari, Carlos J. Gómez-García, Miguel Julve, Salah-Eddine StiribaAbstractLoading hyperbranched polyethylenimine (PEI) with copper(II) ions leads to the formation of a new water-soluble metallodendritic polymer Cu(II)-PEI that has been found to effectively catalyze the clickable azide-alkyne [3 + 2] cycloaddition reactions in water under ambient conditions, in the lack of any external reducing agent. A positive dendritic ef...
Source: Journal of Organometallic Chemistry - July 31, 2019 Category: Chemistry Source Type: research

Towards enantiopure macrocyclic trans-dinucleating hemilabile P-Alkene ligands: Syntheses, structures, and Chiral Pd-Complexes
Publication date: Available online 26 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Sibylle Frieß, Alberto Herrera, Anthony Linden, Frank W. Heinemann, Romano DortaAbstractDibenzazepinyl dichlorophosphine 2 reacts with (R,R)-2,3-O-isopropylidene-threitol (3) in Et2O solution to afford gram-quantities of the enantiopure macrocylic phosphoramidite (all-R)-6, which may be seen as a formal dimer of classic phosphoramidite P-alkene hybrid ligands. Complexation experiments with PdCl2 reveal highly selective formation of the trans-dinuclear complex (all-R)-11. The corresponding bulkier and rigidly trans-ecl...
Source: Journal of Organometallic Chemistry - July 28, 2019 Category: Chemistry Source Type: research

Catalytic synthesis of organic cyclic carbonate through CO2 fixation and production of β-amino alcohol via ring opening of epoxides under green condition by polystyrene embedded Al(III) catalyst
Publication date: Available online 27 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Surajit Biswas, Dipanwita Roy, Swarbhanu Ghosh, Sk Manirul IslamAbstractDevelopment of low cost, eco-friendly heterogeneous catalyst for the production of value added organic compounds has been drawn a considerable attention to the synthetic chemists in recent era. Keeping the above idea in our mind, we have design and synthesized a polymer anchored Al(III) composite from modified Merrifield resin. The composite was characterized properly by FT-IR spectra, SEM, EDAX, elemental analysis, ICP-AES and PXRD studies. The low cos...
Source: Journal of Organometallic Chemistry - July 28, 2019 Category: Chemistry Source Type: research

Recent progress in designing the synthetic strategies for bismuth based complexes
Publication date: Available online 27 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Sohaila Andleeb, Imtiaz-ud-DinAbstractThis short review article provides an insight into the synthetic chemistry involved in the formation of bismuth based versatile frameworks. A unique feature of bismuth compounds is their ability to undergo hydrolysis to produce oxido/hydroxido clusters of various sizes and nuclearities which ultimately produce bismuth based oxides and sulphides for numerous advanced applications. The pertinent reported synthetic routes for such type of compounds are briefly reviewed here.Graphical abstr...
Source: Journal of Organometallic Chemistry - July 28, 2019 Category: Chemistry Source Type: research

Editorial Board
Publication date: 1 October 2019Source: Journal of Organometallic Chemistry, Volume 897Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 26, 2019 Category: Chemistry Source Type: research

Graphical abstract TOC continued
Publication date: 1 October 2019Source: Journal of Organometallic Chemistry, Volume 897Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 26, 2019 Category: Chemistry Source Type: research

Graphical abstract TOC
Publication date: 1 October 2019Source: Journal of Organometallic Chemistry, Volume 897Author(s): (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 26, 2019 Category: Chemistry Source Type: research

Diaryltriazenido Palladium(II) complexes derived from 1-(2-bromo-4-ethoxycarbonylphenyl)-3-phenyltriazenes
Publication date: Available online 24 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Silvio Preusser, Paul R.W. Schönherr, Helmar Görls, Wolfgang Imhof, Sven Krieck, Matthias WesterhausenAbstract1-(2-Bromo-4-ethoxycarbonylphenyl)-3-phenyltriazene (1) can easily be deprotonated yielding the corresponding triazenides of lithium, silver, or triethylammonium. The equimolar metathesis reaction of [(Ph3P)2PdCl2] with these triazenides leads to the formation of [(Ph3P)2Pd(Ph-N3-C6H3-2-Br-4-COOEt)Cl] (3). The addition of another equivalent yields mixtures of [(Ph3P)2Pd(Ph-N3-C6H3-2-Br-4-COOEt)Cl] (3) and ...
Source: Journal of Organometallic Chemistry - July 25, 2019 Category: Chemistry Source Type: research

Azoxycobaltocenium dication, a new organometallic azoxyarene
Publication date: Available online 23 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Anne Wolter-Steingrube, Ulrich Behrens, Jürgen HeckAbstractThe synthesis of two dinuclear azoxycobaltocenium salts is presented and the new compounds are characterized by NMR spectroscopy, cyclic voltammetry, high resolution ESI mass spectrometry, elemental analysis and X-ray structure determination.Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 24, 2019 Category: Chemistry Source Type: research

Heterometallic nitrido cluster compounds: Synthesis and characterizations of the first nitrido-containing ruthenium-gold and ruthenium-copper carbonyl cluster complexes
Publication date: Available online 22 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Richard D. Adams, Perry J. Pellechia, Mark D. Smith, Jonathan D. Tedder, Nutan D. WakdikarAbstractThe first high nuclearity ruthenium-gold-nitrido carbonyl and ruthenium-copper-nitrido carbonyl cluster compounds have been synthesized and structurally characterized. The reaction of [PPN][Ru5(μ5-N)(CO)14], 1, with [Au(PPh3)]NO3 yielded three new hetero-bimetallic ruthenium-gold-nitrido cluster complexes: monogold - tetraruthenium cluster complex Ru4(μ4-N)(CO)12[μ-Au(PPh3)], 2, goldpentaruthenium cluster complex Ru5(&...
Source: Journal of Organometallic Chemistry - July 23, 2019 Category: Chemistry Source Type: research

Aldehyde group functionalized iridium(III) complexes for the selective sensing of homocysteine
Publication date: Available online 22 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Yonghua Liu, Qingqing Wang, Mei-Jin LiAbstractTwo aldehyde group functionalized iridium (III) complexes were synthesized and characterized. The electronic absorption, emission and transient emission spectra were studied. The crystal structure of one of the complexes has been determined. Their interaction with homocysteine (Hcy) was investigated by UV–vis absorption, photoluminescence, 1H NMR and mass spectroscopies. The photoluminesce of the complexes was enhanced significantly after addition of Hcy due to the formati...
Source: Journal of Organometallic Chemistry - July 23, 2019 Category: Chemistry Source Type: research

NHC–Au(I) catalyzed enantioselective intramolecular [4+3] cycloaddition of furan propargyl esters
Publication date: Available online 21 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Ruoyu Ma, Jianbo Yang, Steven Kelley, Benjamin W. GungAbstractEnantioselectivity up to 75% ee has been achieved for an intramolecular [4 + 3] cycloaddition reaction with a series of chiral gold(I) complexes. Nine new chiral NHC–Au(I) complexes featuring disilylbiphenyl derived chiral N-heterocyclic carbene ligands were synthesized and identified by 1H, 13C NMR spectroscopy and X-ray single crystal structure analysis. The corresponding activated Au(I) catalysts with a phenyl nitrile dynamic ligand were prepar...
Source: Journal of Organometallic Chemistry - July 22, 2019 Category: Chemistry Source Type: research

Pincer complexes, leading characters in C–H bond activation processes. Synthesis and catalytic applications
Publication date: Available online 20 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Hugo Valdés, Ernesto Rufino-Felipe, David Morales-MoralesAbstractThe direct functionalization of C–H bonds is in many ways a simple and desired reaction. This strategy could decrease the amount of wastes and energy in a given process. Thus, it is attractive from an environmental and economical point of view. However, C–H bonds are usually strong and kinetically inert; hence, their activation remains a challenging transformation. In addition, the control of the selectivity in C–H activation is diffic...
Source: Journal of Organometallic Chemistry - July 21, 2019 Category: Chemistry Source Type: research

1-[N-phenyl(aminomethyl)]silatrane: Synthesis, reactivity and structure
Publication date: Available online 19 July 2019Source: Journal of Organometallic ChemistryAuthor(s): N.F. Lazareva, I.V. SterkhovaAbstract1-[N-Phenyl(aminomethyl)]silatrane PhNHCH2Si(OCH2CH2)3N was prepared and characterized by multinuclear NMR spectroscopy and single-crystal X-ray diffraction analysis. Its reactivity with CCl4, AgNO3, CuCl2 and α-,β-unsaturated cyclic ketones was investigated.Graphical abstract (Source: Journal of Organometallic Chemistry)
Source: Journal of Organometallic Chemistry - July 20, 2019 Category: Chemistry Source Type: research

Synthesis, characterization, in vitro antimicrobial and anticancer studies of new platinum N-heterocyclic carbene (NHC) complexes and unexpected nickel complexes
Publication date: 15 October 2019Source: Journal of Organometallic Chemistry, Volume 898Author(s): Kar Bee Choo, Sui Mae Lee, Wai Leng Lee, Yuen Lin CheowAbstractA series of bidendate pyridine-functionalized metal N-heterocyclic carbene (NHC) complexes with various wingtip substituents (R = methyl, phenyl and tert-butyl) had been prepared from silver oxide-mediated transmetalation method. The basic backbone of the NHC ligands were prepared in two stepwise reactions: reduction of the commercially available 2-benzoylpyridine, followed by halogenation to yield 2-(chloro(phenyl)methyl)pyridine. Subsequent reactions with di...
Source: Journal of Organometallic Chemistry - July 20, 2019 Category: Chemistry Source Type: research

MOF nano porous-supported C-S cross coupling through one-pot post-synthetic modification
Publication date: Available online 17 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Heshmatollah Alinezhad, Shahram Ghasemi, Mansoureh CheraghianAbstractUIO-66-NH2-Fu@Ni has been synthesized by anchoring a molecular nickel furfural (Fu) complex into a functionalized nanoporous metal-organic framework (MOF) with the amine functional groups, using the one-pot post-synthetic modification. This new catalyst was identified via Fourier-transform infrared (FT-IR) spectroscopy, proton-nuclear-magnetic-resonance (1HNMR) spectroscopy, nitrogen gas adsorption-desorption method, thermogravimetric analyses (TGA), energ...
Source: Journal of Organometallic Chemistry - July 19, 2019 Category: Chemistry Source Type: research

Copper-catalyzed Mizoroki-Heck coupling reaction using an efficient and magnetically reusable Fe3O4@SiO2@PrNCu catalyst
This study intends to design and prepare a new magnetic copper catalyst and its activity was assessed by carbon-carbon coupling reactions. For this purpose, 1-[3-(trimethoxysilyl) propyl] urea (TMSPU), hydrazine and CuI were used sequentially to modify Fe3O4@SiO2 core-shell magnetic nanoparticles to obtain an efficient magnetic transition metal catalyst. Various analytical techniques were used to characterize the catalyst to show that the achieved structure and its properties are well-suited for coupling reactions. Finally, Mizoroki-Heck and Ullmann coupling reactions were performed using Fe3O4@SiO2@PrNCu catalyst. The new...
Source: Journal of Organometallic Chemistry - July 19, 2019 Category: Chemistry Source Type: research

Synthesis, characterizzation, in vitro antimicrobial and anticancer studies of new platinum N-heterocyclic carbene (NHC) complexes and unexpected nickel complexes
Publication date: Available online 16 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Kar Bee Choo, Sui Mae Lee, Wai Leng Lee, Yuen Lin CheowAbstractA series of bidendate pyridine-functionalized metal N-heterocyclic carbene (NHC) complexes with various wingtip substituents (R = methyl, phenyl and tert-butyl) had been prepared from silver oxide-mediated transmetalation method. The basic backbone of the NHC ligands were prepared in two stepwise reactions: reduction of the commercially available 2-benzoylpyridine, followed by halogenation to yield 2-(chloro(phenyl)methyl)pyridine. Subsequent reactions with ...
Source: Journal of Organometallic Chemistry - July 17, 2019 Category: Chemistry Source Type: research

Ruthenium arene complex induces cell cycle arrest and apoptosis through activation of P53-mediated signaling pathways
Publication date: Available online 16 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Jianfu Zhao, Xiang Zhang, Hongxing Liu, Zushuang Xiong, Meng Li, Tianfeng ChenAbstractRuthenium (Ru)-based complexes show promising prospect for development of anticancer agents. Among the cytotoxic Ru complexes, Ru arene complexes are famous for their comparatively high solubility in water under physiological conditions. However, more information is needed to understand the roles and effects of aquation reaction on the anticancer efficacy of these metal complexes. Herein, the aquation process of a Ru(II) arene complex [Ru(...
Source: Journal of Organometallic Chemistry - July 17, 2019 Category: Chemistry Source Type: research

Coinage metal complexes bearing fluorinated N-Heterocyclic carbene ligands
Publication date: Available online 17 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Manuela Delgado-Rebollo, Cristina García-Morales, Celia Maya, Auxiliadora Prieto, Antonio M. Echavarren, Pedro J. PérezAbstractThe synthesis of novel fluorinated symmetrical and unsymmetrical imidazolium salts as well as their corresponding coinage metal complexes is described. The silver derivatives were prepared using Ag2O as the metal source and the subsequent (NHC)AgX complexes were successfully employed in the preparation of the corresponding Cu(I) and Au(I) complexes through transmetallation reactions. H...
Source: Journal of Organometallic Chemistry - July 17, 2019 Category: Chemistry Source Type: research

Fluorinated alkali metal catalysts for the Ring-Opening Polymerization (ROP) of rac-lactide. Effect of the M···F interactions in the polymerization control
Publication date: Available online 15 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Francisco M. García-Valle, Ma Teresa Muñoz, Tomás Cuenca, Stefano Milione, Marta E.G. Mosquera, Jesús CanoAbstractA series of lithium, sodium, and potassium complexes with different fluorinated phenoxo-imine ligands [M(O-2-(RN = CH)–C6H4] [R = 2,4,6-F3C6H2; 2,3-F2C6H3; 2-FC6H4] (1–3) (a,b,c) have been studied as catalysts for the Ring-Opening Polymerization (ROP) of rac-lactide. The sodium and potassium compounds are extremely active catalysts and reach quantitative conversion...
Source: Journal of Organometallic Chemistry - July 16, 2019 Category: Chemistry Source Type: research

Hydrosilylation of nitrogen-containing organic compounds: Model studies
Publication date: Available online 16 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Aleksandra Chechelska-Noworyta, Maria Owińska, Magdalena HasikAbstract1,1,3,3-tetramethyldisiloxane (M2H) was used as the hydrosilylating agent for nitrogen-containing alkene derivatives: N-allylaniline (Naa), N-allylcyclohexylamine (Nach), N-allylpiperidine (Nap), 4-vinylpyridine (4VP) and 2-vinylpyridine (2VP). Reactions were performed in the presence of Pt0 complex (Karstedt's catalyst), in toluene, at 60 °C, for 24 h. Their course was followed by gas chromatography and FTIR spectroscopy. Final hydrosilylation p...
Source: Journal of Organometallic Chemistry - July 16, 2019 Category: Chemistry Source Type: research

Cp2TiCl2-catalyzed borylation and hydroboration of α-olefins with dichloro(diisopropylamino)borane
Publication date: Available online 10 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Liliya I. Khusainova, Leila O. Khafizova, Kirill S. Ryazanov, Tatyana V. Tyumkina, Usein M. DzhemilevAbstractThe reaction between aryl substituted α-olefins and dichloro(diisopropylamino)borane catalyzed with Cp2TiCl2 leads to trans-1-alkenyl(chlorodiisopropylamino)boranes in high yields. Aliphatic α-olefins in this reaction give borylation and hydroboration products, namely, trans-1-alkenyl(chlorodiisopropylamino)boranes and alkyl(chlorodiisopropylamino)-boranes. A proposed catalytic cycle for the Cp2TiCl2-cata...
Source: Journal of Organometallic Chemistry - July 12, 2019 Category: Chemistry Source Type: research

Chloropalladated tetranuclear and copper(I) complexes of propargylamines [RC≡CCH2NC4H8NCH2C≡CR]
Publication date: Available online 10 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Vitthalrao S. Kashid, Basvaraj S. Kote, S. Balakrishna MaravanjiAbstractThe reactions of propargylamines 1,4-bis(3-phenylprop-2-yn-1-yl)piperazine (1) and 1,4-bis(3-(trimethylsilyl)prop-2-yn-1-yl)piperazine (2) with PdCl2 and CuI is described. 1,4-Bis(3-phenylprop-2-yn-1-yl)piperazine reacts with one equivalent of PdCl2 to afford κ2-N,N-coordinated complexes [PdCl2{Me3SiC≡CCH2NC4H8NCH2C≡CSiMe3-κ2-N,N] (3) and [PdCl2{Me3SiC≡CCH2NC4H8NCH2C≡CSiMe3}-κ2-N,N] (4). The reactions of 1 and 2...
Source: Journal of Organometallic Chemistry - July 12, 2019 Category: Chemistry Source Type: research

Reactivity of 5-alkynyl-3,4-dihydro-2H-pyrroles with Au(III): Route to vinylgold(III) complexes, aurocycles by cyclisation of these complexes and ML complexes
Publication date: Available online 11 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Huy-Dinh Vu, Christelle Bouvry, Jacques Renault, Arnaud Bondon, Fabian Lambert, Thierry Roisnel, Philippe UriacAbstractThe reaction of 5-alkynyl-3,4-dihydro-2H-pyrroles (imine) with AuCl3 led to the synthesis of the vinyl gold (III) complexes 3 that could give the aurocycles 4 with an excess of AuCl3. In the base presence the dimerization of 4 was observed leading to 5. If NaAuCl4 was used as gold (III) source a ligand exchange was observed leading to the complexes 6. Nucleophilicity of both nitrogen atom and alkyne functio...
Source: Journal of Organometallic Chemistry - July 12, 2019 Category: Chemistry Source Type: research

Synthesis, biological evaluation and colorimetric sensing studies of platinum group metal complexes comprising pyrazine based thiourea derivatives
Publication date: Available online 11 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Lathewdeipor Shadap, Siewdorlang Diamai, Jaya Lakshmi Tyagi, Krishna Mohan Poluri, Werner Kaminsky, Mohan Rao KolliparaAbstractA series of complexes (1–9) were synthesized by the reaction of halide bridged metal precursors with the three pyrazine thiourea ligands L1, L2 and L3 to yield cationic as well as neutral complexes and characterized by various spectroscopic techniques. The cationic complexes are represented by the general formula [(arene)M(L)Cl] +, where L = L1, L2 and L3, arene = p-cymene, Cp* and M&n...
Source: Journal of Organometallic Chemistry - July 12, 2019 Category: Chemistry Source Type: research

Chromium carbonyl complexes with aryl mono- and oligogermanes: Ability for haptotropic rearrangement
Publication date: Available online 12 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Kirill V. Zaitsev, Igor P. Gloriozov, Yuri F. Oprunenko, Elmira Kh Lermontova, Andrei V. ChurakovAbstractThe intra- and intermolecular inter-ring η6 ⇌ η6-haptotropic rearrangements (IRHR), occurring by involving interactions to Ge atoms in arylgermanes, were investigated theoretically and experimentally. The new methods for the synthesis of non-symmetrical polyaromatic Ge compounds were elaborated. Digermane Ph3GeGeMe2Cl (2) was obtained from Ph3GeGeMe2NMe2 (1) under action of Me3SiCl. Aryl digermane Ph3GeGeMe2(&e...
Source: Journal of Organometallic Chemistry - July 12, 2019 Category: Chemistry Source Type: research

Reactions of [Os3(CO)10(μ-dppm)] and [HOs3(CO)8{μ3-Ph2PCH2P(Ph)C6H4}] with Bu3GeH: Ge–H and Ge–C bond cleavage at triosmium centers
Publication date: Available online 12 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Partha S. Roy, Md Tuhinur R. Joy, Shishir Ghosh, Derek A. Tocher, Vladimir N. Nesterov, Michael G. Richmond, Shariff E. KabirAbstractThe reactivity of the triosmium clusters [Os3(CO)10(μ-dppm)] [dppm = bis(diphenylphosphino)methane] and [HOs3(CO)8{μ3-Ph2PCH2P(Ph)C6H4}] with tributylgermanium hydride (Bu3GeH) has been investigated. Oxidative addition of Bu3GeH to [Os3(CO)10(μ-dppm)] at 110 °C affords [HOs3(CO)9(GeBu3)(μ-dppm)] (1) which undergoes further decarbonylation upon prolonged heating to yield [...
Source: Journal of Organometallic Chemistry - July 12, 2019 Category: Chemistry Source Type: research

Synthesis, characterization and catalytic activity of supported vanadium Schiff base complex as a magnetically recoverable nanocatalyst in epoxidation of alkenes and oxidation of sulfides
Publication date: Available online 9 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Mojtaba Bagherzadeh, Mohammad Bahjati, Anahita Mortazavi-ManeshAbstractA new magnetically separable nanocatalyst was successfully synthesized by immobilizing of vanadyl acetylacetonate complex, [VO(acac)2], onto silica coated magnetite nanoparticles previously functionalized with 3-aminopropyltriethoxysilane (3-APTES) and reacted by 5-bromosalicylaldehyde to form Schiff base moiety. The obtained nanocatalyst was characterized by elemental analysis (CHN), FT-IR spectroscopy, Powder X-ray diffraction (XRD), field emission scan...
Source: Journal of Organometallic Chemistry - July 10, 2019 Category: Chemistry Source Type: research

Molecular aggregations of bicyclodioxazastannone produced from multicomponent reactions involving functionalized 2-hydroxybenzaldehydes, α- or β-amino acids and a dimethyltin precursor
Publication date: Available online 10 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Tushar S. Basu Baul, Anurag Chaurasiya, Antonin Lyčka, Irán Rojas-León, Herbert HöpflAbstractA series of novel bicyclodioxazastannone derived from ONO Schiff base ligands prepared from diazenylaryl functionalized 2-hydroxybenzaldehydes and α or β-amino acetates, viz., [Me2Sn(L1)]2 (1), [Me2Sn(L2)]2 (2), [Me2Sn(L3)(MeOH)]2 (3), [Me2Sn(L4)]n (4), [Me2Sn(L5)]n⋅nH2O (5), [Me2SnL6)]2 (6), [Me2Sn(L7)] (7A), [Me2Sn(L7)]2⋅C8H10 (7B) and [Me2Sn(L8)]n (8), with variously substituted Schiff bas...
Source: Journal of Organometallic Chemistry - July 10, 2019 Category: Chemistry Source Type: research

Palladium (0) olefin complexes bearing purine-based N-heterocyclic carbenes and 1,3,5-triaza-7-phosphaadamantane (PTA): Synthesis, characterization and antiproliferative activity toward human ovarian cancer cell lines
Publication date: Available online 8 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Thomas Scattolin, Nicola Pangerc, Ilaria Lampronti, Chiara Tupini, Roberto Gambari, Lorenza Marvelli, Flavio Rizzolio, Nicola Demitri, Luciano Canovese, Fabiano VisentinAbstractA complete series of new η2-olefin palladium (0) complexes bearing purine-based N-heterocyclic carbenes or PTA (1,3,5-triaza-7-phospaadamantane) as spectator ligands have been synthetized and exhaustively characterized. The first single-crystal X-ray structure of a PTA complex of palladium (0) have been also reported. The most part of these compou...
Source: Journal of Organometallic Chemistry - July 9, 2019 Category: Chemistry Source Type: research

Supramolecular assemblies and photophysical properties of ionic homo- and heteronuclear metallophilic complexes
Publication date: Available online 5 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Noora Svahn, Ingrid Sanz, Kari Rissanen, Laura RodríguezAbstractThe synthesis of two dinuclear ionic complexes with chemical formula [Au(PR3)2][Au(C≡CC5H4N-4)2] that contain the water soluble phosphines, PR3, PTA (1, 3,5-triaza-7-phosphaadamantane, 1) and DAPTA (3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane, 2) is herein described. The differences on their intermolecular reorganization have been analyzed and compared with the previously reported for the neutral complexes [Au(PR3)(C≡CC5H4N-4)]. It...
Source: Journal of Organometallic Chemistry - July 7, 2019 Category: Chemistry Source Type: research

Synthesis and properties of dimethylpalladium complex with new PS3-type tripodal tetradentate ligand
Publication date: Available online 4 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Nobuhiro Takeda, Rin Oma, Yuki Kogure, Fumiaki Sakakibara, Yusuke Tanaka, Masafumi UnnoAbstractDimethylpalladium complex bearing PS3-type tripodal tetradentate ligand, [PdMe2{P(C6H4-2-S-i-Pr)3}], was synthesized by the reaction of [PdCl{P(C6H4-2-S-i-Pr)3}]X (X = Cl, BF4) with methyllithium (Br free). The dimethylpalladium complex reacted with an equimolar amounts of HCl to give the corresponding chloromethylpalladium complex, [PdClMe{P(C6H4-2-S-i-Pr)3}], while the similar reaction using 2 M amounts of HCl afforded the ...
Source: Journal of Organometallic Chemistry - July 5, 2019 Category: Chemistry Source Type: research

Synthesis, structure and dual-stimulus-responsive luminescence switching of a new platinum(II) complex based on 3-trimethylsilylethynyl-1,10-phenanthroline
Publication date: Available online 4 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Jiajia Kang, Jun Ni, Yanqin Li, Jianjun ZhangAbstractA new diimine-platinum(II) complex, Pt(PhenC≡CSiMe3)(C≡C-C6H4-3-F)2 (1) based on 3-trimethylsilylethynyl-1,10-phenanthroline (PhenC≡CSiMe3), were synthesized and characterized. Two solvated crystals, 1·1/2(ClCH2CH2Cl) and 1·CHCl3 exhibited dual-stimulus-responsive color and luminescence switching behaviors triggered by heating or mechanical grinding. Upon heating, the color and luminescence of both complexes were changed to red with luminesc...
Source: Journal of Organometallic Chemistry - July 5, 2019 Category: Chemistry Source Type: research

A practical synthesis of quinazolinones via intermolecular cyclization between 2-halobenzamides and benzylamines catalyzed by copper(I) immobilized on MCM-41
Publication date: Available online 4 July 2019Source: Journal of Organometallic ChemistryAuthor(s): Nan Yan, Chongren You, Mingzhong CaiAbstractThe heterogeneous tandem N-arylation/oxidative C–H amidation of 2-halobenz- amides and benzylamines was achieved in DMSO at 110 or 120 °C by using an MCM-41-immobilized l-proline copper(I) complex [MCM-41-l-Proline-CuBr] as the catalyst and air as the oxidant, yielding a variety of quinazolinone derivatives in good yields. The new MCM-41-l-Proline-CuBr catalyst can easily be prepared from commercially readily available and inexpensive reagents and recovered by filtratio...
Source: Journal of Organometallic Chemistry - July 5, 2019 Category: Chemistry Source Type: research