Synthesis of MFe<sub>3</sub>S<sub>4</sub> Clusters Containing a Planar M<sup>II</sup> Site (M = Ni, Pd, Pt), a Structural Element in the C-Cluster of Carbon Monoxide Dehydrogenase
作者:Rashmishree Panda、Curtis P. Berlinguette、Yugen Zhang、Richard H. Holm
DOI:10.1021/ja052381s
日期:2005.8.1
Pd(II) (12), Pt(II) (13); LS(3) = 1,3,5-tris((4,6-dimethyl-3-mercaptophenyl)thio)-2,4,6-tris(p-tolylthio)benzene(3-)) contain the cores [MFe(3)(mu(2)-S)(mu(3)-S)(3)](+) having planar M(II)P(2)S(2) sites and variable nonbonding M...S distances of 2.6-3.4 A. Reaction (i) involves a tetrahedral --> planar Ni(II) structural change between isomeric cubane and cubanoid [NiFe(3)S(4)](+) cores. Based on the magnetic
C.hydrogenoformans 一氧化碳脱氢酶的 C 簇类似物的合成需要平面 Ni(II) 位点的形成和核心单元 NiFe(4)S(5) 中的外部铁原子的连接。第一个目标是通过两个反应实现的:(i)在立方烷型 [NiFe(3)S(4)] 的四面体 Ni(II) 位点上置换 Ph(3)P 或 Bu(t)()NC( +) 具有螯合二膦的簇,以及 (ii) 在双 (1,2-二甲基膦) 存在下,金属原子与 M(0) 反应物结合到立方体 [Fe(3)S(4)](0) 簇中乙烷(dmpe)。孤立的产物簇 [(dmpe)MFe(3)S(4)(LS(3))](2-) (M = Ni(II) (9), Pd(II) (12), Pt(II) (13); LS(3) = 1,3,5-tris((4,6-dimethyl-3-mercaptophenyl)thio)-2,4,6-tris(p-tolylthio)benzo(3-))