Palladium complexes of bridgehead phosphines

被引:19
作者
Coles, SJ
Edwards, PG
Hursthouse, MB
Malik, KMA
Thick, JL
Tooze, RP
机构
[1] UNIV WALES CARDIFF,DEPT CHEM,CARDIFF CF1 3TB,S GLAM,WALES
[2] ICI ACRYL,WILTON CTR,MIDDLESBROUGH TS90 8JE,CLEVELAND,ENGLAND
来源
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1997年 / 11期
关键词
D O I
10.1039/a700505i
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Palladium chloro complexes reacted with 9-phenyl-9-phosphabicyclononanes (PPBN) and 1-phenylphospholane and gave trans-chlorobis(phosphine)palladium(II) complexes, 1-phenylphospholane also gave rise to a chlorobridged dimer. With palladium acetate, the two isomers of PPBN (9-phenyl-9-phosphabicyclo-[3.3.1]nonane and -[4.2.1]nonane, 3,3,1-PPBN and 4,2,1-PPBN respectively) formed trans bis(phosphine) complexes exclusively whereas 1-phenylphospholane formed the cis-bis(phosphine) complex; examples of both trans and cis complexes have been structurally characterised. The acetate groups were readily replaced by sulfonic and phosphonic acids to give sulfonato and phosphonato complexes respectively. Reduction of the acetato-4,2,1-PPBN complex to [Pd-0(4,2,1-PPBN)(3)] occurred in alcoholic media readily however the isomeric 3,3,1-PPBN complex was considerably more resistant to reduction. Abstraction of halide from both dichloro-PPBN complexes by Ag(O3SCF3) in ethanol resulted in the formation of phosphonium salts.
引用
收藏
页码:1821 / 1830
页数:10
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