Versatile Visible‐Light‐Driven Synthesis of Asymmetrical Phosphines and Phosphonium Salts
作者:Percia Beatrice Arockiam、Ulrich Lennert、Christina Graf、Robin Rothfelder、Daniel J. Scott、Tillmann G. Fischer、Kirsten Zeitler、Robert Wolf
DOI:10.1002/chem.202002646
日期:2020.12.9
Asymmetrically substituted tertiary phosphines and quaternaryphosphonium salts are used extensively in applications throughout industry and academia. Despite their significance, classical methods to synthesize such compounds often demand either harsh reaction conditions, prefunctionalization of starting materials, highly sensitive organometallic reagents, or expensive transition‐metal catalysts. Mild
Nuclear magnetic resonance investigations of a novel intramolecular methylthio replacement process in palladium(<scp>II</scp>) and platinum(<scp>II</scp>) complexes of mixed sulfur–phosphine ligands
作者:Edward W. Abel、Jonathan C. Dormer、David Ellis、Keith G. Orrell、Vladimir Šik、Michael B. Hursthouse、Mohammed A. Mazid
DOI:10.1039/dt9920001073
日期:——
palladium(II) and platinum(II) complexes with the mono- and bis-chelate ligands bis[o-(methylthio)phenyl]phosphine and tris[o-(methylthio)phenyl]phosphine have been prepared and characterised. Despite the potential tridenticity of the first ligand it acts as a P/S monochelate to form square-planar complexes of type [MPPh(C6H4SMe-o)2}X2](M = Pd, X = Cl, Br or I; M = Pt, X = Cl). Variable-temperature one-
The reaction of tertiary phosphines with (Ph<sub>2</sub>Se<sub>2</sub>I<sub>2</sub>)<sub>2</sub>—the influence of steric and electronic effects
作者:Nicholas A. Barnes、Stephen M. Godfrey、Ruth T. A. Halton、Imrana Mushtaq、Robin G. Pritchard
DOI:10.1039/b608453b
日期:——
multinuclear NMR spectroscopy. Both steric and electronic factors are important in determining the structural motif (CT vs. ionic) observed in the solid-state. In general, highly basic phosphines result in a lengthening of the Se-I interaction, and a preference for an ionic structure. The reaction with (o-CH(3)C(6)H(4))(3)P does not yield a stable R(3)PSe(Ph)I adduct, and instead (o-CH(3)C(6)H(4))(3)PI(2)
Electronic Spectra of Some Tetrahedral Nickel(II) Complexes
作者:D. M. L. Goodgame、M. Goodgame、F. A. Cotton
DOI:10.1021/ja01481a014
日期:1961.10
The electronic spectra of eight tetrahedralcomplexes of nickel(II), viz., STANiCl/sub 4/!/sup 2-/, STANiBr/sub 4/!/sub s/sup -/, STANiI4>i!/sup 2/ s, STANi(Ph/sub 3/PO)/sub 2/Cl/sub 2/!' STANi(Ph/sub 3/PO)/sub 2/Br/sub 2/!, STANi(Ph/sub 3/PO)/sub 2/I/sub 2/!, STANi(Ph/sub 3/AsO)/sub 2/Cl i!, and STANi(Ph/sub 3/AsO)/sub 2/Br/sub 2/!, were carefully studied in the region of the two highest energy, spin-allowed