Novel heterometallic Cd/Cu complexes prepared using zerovalent copper: control of the nuclearity and structural diversity by halide counterions

被引:44
作者
Vinogradova, EA
Vassilyeva, OY
Kokozay, VN
Skelton, BW
Bjernemosee, JK
Raithby, PR
机构
[1] Natl Taras Shevchenko Univ, Dept Inorgan Chem, UA-01033 Kiev, Ukraine
[2] Univ Western Australia, Dept Chem, Crawley, WA 6009, Australia
[3] Univ Bath, Dept Chem, Bath BA2 7AY, Avon, England
来源
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 2002年 / 22期
关键词
D O I
10.1039/b205917g
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Three kinds of Cd-II/Cu-II compounds of different nuclearity: tetranuclear [Cd2Cu2I4L4(dmso)(2)] 1, pentanuclear [Cd2Cu3Br6L4(dmso)(2)] 2 and hexanuclear [Cd4Cu2Cl6L6(H2O)(2)] 3, have been synthesised by the reaction of zerovalent copper and cadmium halides with non-aqueous (dmso, CH3CN) solutions of 2-dimethylaminoethanol (HL) in air. The choice of counteranion in the initial cadmium salt provides a useful method of altering the nuclearity and structure of the heterometallic Cd/Cu complexes. Crystallographic investigations reveal that 1 has a centrosymmetric tetranuclear structure with a zig-zag Cd-Cu-Cu-Cd skeleton. The molecular structure of 2 consists of a pentanuclear centrosymmetric core in which four metal atoms are linked together by bridging oxygen atoms of L groups and bromide anions to form a parallelogram Cu-Cd-Cu-Cd centred on the fifth Cu. The hexanuclear complex 3 is made up of two symmetry-related units with triangular CuCd2 cores linked by amino alkoxo bridges, involving cadmium centres of both units.
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收藏
页码:4248 / 4252
页数:5
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