SYNTHESIS OF O-CO-ORDINATED PLATINUM(II) COMPLEXES OF CARBONYL-STABILIZED ARSONIUM YLIDES AND THE MECHANISM OF CONVERSION TO THEIR C-CO-ORDINATED ISOMERS

被引：13

作者：

FACCHIN, G ^{[1
]}

ZANOTTO, L ^{[1
]}

BERTANI, R ^{[1
]}

CANOVESE, L ^{[1
]}

UGUAGLIATI, P ^{[1
]}

机构：

[1] UNIV VENEZIA,FAC SCI,DIPARTIMENTO CHIM,I-30100 VENICE,ITALY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1993年 / 19期

关键词：

D O I：

10.1039/dt9930002871

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of [{PtCl(dppe)}2][BF4], [dppe=1,2-bis(diphenylphosphino)ethane] with ylides Ph3AsCHCOR (R = Me, Ph or OMe) led to novel platinum(II) complexes [PtCl(dppe){OC(R)CH(AsPh3)}]BF4 (R = Me 1, Ph 2 or OMe 3) in which the carbonyl stabilized arsonium ylides are co-ordinated to the metal centre via the oxygen carbonyl atom. These derivatives are not stable in chlorinated solvents and slowly undergo isomerization to their C-co-ordinated analogues 4-6 following a first-order rate law. The mechanism proposed for this rearrangement implies both intramolecular and free-ylide promoted intermolecular paths with k(obs) values of the whole process depending on the basicity of the ylide.

引用

页码：2871 / 2874

页数：4