نتایج جستجو برای: phosphane

تعداد نتایج: 385  

Journal: :Molecules 2017
Michel Ferreira Hervé Bricout Sébastien Tilloy Eric Monflier

The behaviour of platinum(II) and palladium(0) complexes coordinated by various hydrosoluble monodentate phosphane ligands has been investigated by 31P{¹H} NMR spectroscopy in the presence of randomly methylated β-cyclodextrin (RAME-β-CD). This molecular receptor can have no impact on the organometallic complexes, induce the formation of phosphane low-coordinated complexes or form coordination ...

Journal: :Dalton transactions 2015
Ryan Guterman Elizabeth R Gillies Paul J Ragogna

Air-sensitive and air-stable primary phosphines (RPH2) were compared for their ability to undergo photoinitiated phosphane-ene chemistry with 1-hexene. Despite their increased air-stability, the primary phosphines displayed equal to or greater reactivity when compared to air-sensitive alkyl or aryl analogues. The phosphane-ene reaction was also performed in the presence of 1-octanethiol to dete...

Journal: :Dalton transactions 2014
Štefan Toma Jana Csizmadiová Mária Mečiarová Radovan Šebesta

Chiral ferrocene derivatives belong to privileged ligand classes for asymmetric transition metal catalysed reactions. Hetero-bidentate phosphane ligands are hybrid ligands, which combine the properties of phosphorus with those of other donor atoms. This feature creates further asymmetry around the metal centre, which may be helpful for increasing the stereoinduction. Therefore, hetero-bidentate...

2012
Hervé Bricout Estelle Léonard Christophe Len David Landy Frédéric Hapiot Eric Monflier

In this study, we showed that the addition of randomly modified β-cyclodextrin (RAME-β-CD) in aqueous medium could have a beneficial impact on the catalytic performances of phosphane-based aggregates in the Pd-catalyzed cleavage of allyl carbonates (Tsuji-Trost reaction). The RAME-β-CD/phosphane supramolecular interactions helped explain the catalytic results. The presence of RAME-β-CD in the a...

2016
Aaron D. Finke Danielle L. Gray Jeffrey S. Moore

Under anhydrous conditions and in the absence of a Lewis-base solvent, a zinc chloride complex with tri-tert-butyl-phosphane as the μ-bridged dimer is formed, viz. di-μ-chlorido-bis-[chlorido-bis-(tri-tert-butyl-phosphane)zinc], [ZnCl4(C12H27P)2], (1), which features a nearly square-shaped (ZnCl)2 cyclic core and whose Cl atoms inter-act weakly with C-H groups on the phosphane ligand. In the pr...

2012
Omar bin Shawkataly Siti Syaida Sirat Ching Kheng Quah Hoong-Kun Fun

The title triangulo-triruthenium(0) compound, [Ru(3)(C(30)H(32)P(2))(CO)(10)], contains a triangle of singly bonded Ru atoms. The phosphane-bridged Ru-Ru distance [2.9531 (2) Å] is significantly longer than the non-bridged Ru-Ru distances [2.8842 (2) and 2.8876 (2) Å] . The bis-(diphenyl-phosphan-yl)hexane ligand bridges the Ru-Ru bond. Each phosphane-substituted Ru atom bears one equatorial an...

2014
Michael A. Berg Jesse Davidson Joseph S. Merola

The title compound, [HP(CH3)3][IrCl4{(H3C)3P}2], consists of a tri-methyl-phospho-nium cation and a tetra-chlorido-bis-(tri-methyl-phosphane)iridate(III) anion. The anion has an octa-hedral arrangement of ligands, with the tri-methyl-phosphane groups occupying trans positions. The Ir(III) atom sits on an inversion center with one P(CH3)3 ligand and two chloride ligands in the asymmetric unit. T...

Journal: :European Journal of Inorganic Chemistry 2021

In continuation of our research in cyclopentadienylalkylphosphane nickel chelates with secondary phosphane tethers the first cationic representatives this class compounds are reported. These were obtained by reaction respective bromo complex tris(4-trifluoromethylphenyl)phosphane as well a number alkyl and aryl isonitriles presence indium tribromide. This Lewis acid is crucial for success react...

2011
Andreas Orthaber Michael Fuchs Ferdinand Belaj Gerald N Rechberger C Oliver Kappe Rudolf Pietschnig

A facile large-scale synthesis of the “push–pull”-substituted ligand bis(diethylamino)(pentafluorophenyl)phosphane is reported. A selenophosphorane as well as complexes with CuI and PdCl2, can be formed almost quantitatively from suitable starting materials. The PdII complex shows a square-planar coordination with significant distortions of the Cl–Pd–Cl moiety in the solid state. In contrast, t...

2011
Omar bin Shawkataly Imthyaz Ahmed Khan H. A. Hafiz Malik Chin Sing Yeap Hoong-Kun Fun

In the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(19)H(17)PS)(CO)(9)], the bis-(diphenyl-arsanyl)methane ligand bridges an Ru-Ru bond and the monodentate phosphane ligand bonds to the third Ru atom. Both arsine and phosphane ligands are equatorial with respect to the Ru(3) triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands. T...

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