Mixed biphosphine complexes of palladium(0); the structure of “bis(diphenylphosphino)ethane”-“bis(dicyclohexylphosphino)ethane” palladium(0)
摘要:
A range of mixed biphosphine complexes of palladium(0) has been prepared and characterized by P-31 NMR spectroscopy. The complexes disproportionate in solution at rates which depend on the nature of the ligands. The structure of [Pd(dcpe)(dppe)] has been established in an X-ray diffraction study.
Mixed biphosphine complexes of palladium(0); the structure of “bis(diphenylphosphino)ethane”-“bis(dicyclohexylphosphino)ethane” palladium(0)
摘要:
A range of mixed biphosphine complexes of palladium(0) has been prepared and characterized by P-31 NMR spectroscopy. The complexes disproportionate in solution at rates which depend on the nature of the ligands. The structure of [Pd(dcpe)(dppe)] has been established in an X-ray diffraction study.
An η<sup>2</sup>transition state for the insertion of [Pd(dppe)] fragments into the phosphorus–carbon bonds of phosphiranepentacarbonyltungsten complexes. Crystal and molecular structures of (2R,3S,4R)- and (2R,3S,4S)-[Pd(dppe)(CHPhCHPhPPh)-W(CO)<sub>5</sub>], dppe = 1,2-bis(diphenylphosphanyl)ethane
作者:Duncan Carmichael、Peter B. Hitchcock、John F. Nixon、François Mathey、Louis Ricard
DOI:10.1039/c39890001389
日期:——
Evidence for a transitionstate involving η2 co-ordination of a P–C bond to [Pd(dppe)] is obtained from an analysis of the insertion of [Pd(dppe)] fragments into (E)- and (Z)-[W(CO)5(PPh–CHPh–CHPh)] complexes.
An η<sup>2</sup>transition state for the insertion of M(PR<sub>3</sub>)<sub>2</sub>fragments (M = Pd or Pt) into the phosphorus–carbon bonds of pentacarbonyl(phosphirane)tungsten complexes
作者:Duncan Carmichael、Peter B. Hitchcock、John F. Nixon、François Mathey、Louis Ricard
DOI:10.1039/dt9930001811
日期:——
4S*)-(±)-, (2S*3R*4R*)-(±)- and (2S*,3S*,4R*)-(±)-[(Ph3P)2Pt(CHPhCHPhPPh)W(CO)5]; and trans-(2S*,3S*,4R*)-(±)-[(Ph3P)(OC)Pt-(CHPhCHPhPPh)W(CO)5]. The crystal and molecularstructures of (Z)-[W(CO)5([graphic omitted]HPh)], (2R*,3S*,4R*)-(±)- and (R*,3S*,4S*)-(±)-[(dppe)Pd(CHPhCHPhPPh)W(CO)5] have been determined. The configurations of the products are interpreted in terms of a transitionstate in which
(E)-和(Z)-[W(CO)5([HP]])与[M(PR 3)2(C 2 H 4)] [M = Pd,(PR 3)2 = dppe(Ph 2 PCH 2 CH 2 PPh 2); 已研究了M = Pt,PR 3 = PPh 3,并已通过NMR光谱法充分表征了以下产物[由M(PR 3)2蛙类插入到膦环中得到的结果]:(2 R *,3 S *,4 S*)-(±)-,(2 R *,3 S *,4 R *)-(±)-和(2 R *,3 S *,4 R *)-(±)-[(dppe)Pd (CHPhCHPhPPh)W(CO)5 ];(2 S *,3 S *,4 S *)-(±)-,(2 S * 3 R * 4 R *)-(±)-和(2 S *,3 S *,4 R *)- (±)-[(Ph 3 P)2 Pt(CHPhCHPhPPh)W(CO)5 ];和反式-(2 S *,3 S *,4 R *)-(±)-[(Ph
Photochemical generation of bis(phosphine)palladium and bis(phosphine)platinum equivalents
作者:Ralph S. Paonessa、Andrea L. Prignano、William C. Trogler