New η5- and μ-(O)-Rh(I) phenoxide complexes:: synthesis, characterisation and unconventional reactivity of η5-complexes towards carbon dioxide

被引:8
作者
Aresta, M
Dibenedetto, A
Pascale, M
Quaranta, E
Tommasi, I
机构
[1] Univ Bari, Dipartmento Chim, I-70126 Bari, Italy
[2] CNR, Ctr MISO, I-70126 Bari, Italy
关键词
phenoxides; phenoxo-complexes; rhodium complexes; carbon dioxide; carboxylation;
D O I
10.1016/S0022-328X(00)00217-5
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The synthesis, analytical and spectroscopic characterisation, and reactivity of three new Rh(I)-phenoxide complexes of formula Rh-2(mu-OPh)(2)(C2H4)(4) (1), Rh(C2H4)(2)(eta(5)-OPh) (2) and Rh(diphos)(eta(5)-OPh) (4) [diphos = 1,2-bis(diphenylphosphino)ethane] are reported. Both the eta(5)- and mu-(O) modes of bonding have been found. The eta(5)-complexes are quite air-sensitive. The reactivity towards carbon dioxide is described and the formation of an emicarbonate is reported with the O-bonded phenoxide. A ring carboxylation occurs with eta(5)-complexes. (C) 2000 Published by Elsevier Science S.A. All rights reserved.
引用
收藏
页码:143 / 150
页数:8
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