The influence of steric bulk on the geometry of triarylphosphite-based palladacycles and their tricyclohexylphosphine adducts

被引：20
作者：
Bedford, RB
Betham, M
Coles, SJ
Horton, PN
López-Sáez, MJ
机构：
[1] Univ Bristol, Sch Chem, Dept Inorgan & Mat Chem, Bristol BS8 1TS, Avon, England
[2] Univ Southampton, Dept Chem, EPSRC Natl Crystallog Serv, Southampton SO17 1BJ, Hants, England
[3] Univ Murcia, Fac Quim, Dept Quim Inorgan, Grp Quim Organomet, E-30071 Murcia, Spain
来源：
POLYHEDRON | 2006年 / 25卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
palladium; phosphite; palladacycle; orthometallation;
D O I：
10.1016/j.poly.2005.11.014
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A range of complexes of the formula [PdCl2{P(OAr)(3)}(2)] have been synthesized in order to determine the effect of steric bulk on stereochemistry, one example [PdCl2{P(OC6H4-2-Bu-t)(3)}(2)] has been structurally characterized. Three palladacyclic complexes [{Pd(mu-Cl)-(kappa(2)-P, C-P(OC6H3R)(OC6H4R)(2))}(2)] have been synthesized (R = H, 2-Pr-t, 2-Bu-t) and two have been characterized by crystallography (R = H and Bu-t). The latter adopts the expected trans geometry while the former is cis. In this case, the driving force for the cis geometry seems to be intermolecular interactions in the crystal structure which are disrupted on substitution. We also report an unusual solvolysis reaction. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1003 / 1010
页数：8
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