Copper, cobalt and platinum complexes with dithiothiophene-based ligands

被引:25
作者
Belo, D
Figueira, MJ
Mendonça, J
Santos, IC
Almeida, M
Henriques, RT
Duarte, MT
Rovira, C
Veciana, J
机构
[1] CFMC, Inst Tecnol & Nucl, P-2686953 Sacavem, Portugal
[2] IST, Inst Telecommun, Polo Lisboa, P-1049001 Lisbon, Portugal
[3] Univ Tecn Lisboa, Ctr Quim Estrutural, Inst Super Tecn, P-1049001 Lisbon, Portugal
[4] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
关键词
S ligands; coordination chemistry; copper; cobalt; platinum;
D O I
10.1002/ejic.200500133
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The preparation and characterisation of new thiophenedithiolate complexes of Cu, Co and Pt with the ligands alpha-tpdt and tpdt (alpha-tpdt = 2,3-thiophenedithiolate, tpdt = 3,4-thiophenedithiolate) is reported. The Co and Pt complexes present regular square-planar coordination geometry and low oxidation potentials when compared with complexes with simpler ligands, but their monoanionic state is found to be rather unstable. The Co(tpdt)(2) complex can be isolated both in the monoanionic and dianionic states as a stable compound but the Co(alpha-tpdt)(2) and the Pt complexes can be obtained only in the dianionic state, while their monoanionic state is unstable. The Co and Pt complexes can, however, be easily oxidised to the neutral state, giving a fine-powdered microcrystalline material without high electrical conductivity. With Cu only a less frequent geometry based on a tetrametallic Cut cluster and three ligands is observed as [CU4(alpha-tpdt)(3)](2-) and [CU4(tpdt)(3)](2-).((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005).
引用
收藏
页码:3337 / 3345
页数:9
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