Synthesis of μ-C2S44− Cobalt Complexes by Activation of the 1,3,4,6-tetrathiapentalene-2,5-dione, and Electrochemical Study of [(Cp*Co)2(μ-C2S4)]
作者:Fabrice Guyon、Isabelle V. Jourdain、Michael Knorr、Dominique Lucas、Theresa Monzon、Yves Mugnier、Narcis Avarvari、Marc Fourmigué
DOI:10.1002/1099-0682(200208)2002:8<2026::aid-ejic2026>3.0.co;2-0
日期:2002.8
complex [Cp(*)Co)2(μ-C2S4)] in which the two metal centres are linked by an ethylenetetrathiolate C2S44− unit, was synthesized in high yield by oxidative addition of 1,3,4,6 tetrathiapentalene-2,5-dione to [Cp(*)Co(CO)2]. The X-ray crystal structure of the intermediate product Cp*Co(dmid) (dmid2− = 4,5-disulfanyl-1,3-dithiol-2-onate) is presented. The electrochemical behaviour of the [(Cp*Co)2(μ-C2S4)]
双金属配合物 [Cp(*)Co)2(μ-C2S4)],其中两个金属中心通过亚乙基四硫醇 C2S44-单元连接,通过氧化加成 1,3,4,6 四硫戊烯- 2,5-二酮生成 [Cp(*)Co(CO)2]。展示了中间产物 Cp*Co(dmid)(dmid2- = 4,5-disulfanyl-1,3-dithiol-2-onate)的 X 射线晶体结构。详细研究了[(Cp*Co)2(μ-C2S4)]配合物在氧化范围内的电化学行为。该研究表明,氧化后所得产物的性质取决于溶液中络合剂的存在。该机制已在 P(OMe)3 存在下的 CH2Cl2 溶液中阐明。此外,使用几种氧化剂(Br2、TCNQF4 和 AgBF4)进行化学氧化。通过 X 射线衍射研究确定了四硫代草酸盐桥接复合物 [(Cp*CoP(OMe)3})2(μ-C2S4)](BF4)2 的分子结构。(© Wiley-VCH Verlag GmbH