Synthesis and Characterization of Triplet Germylene-bridged Diiron Complexes and Singlet Stannylene-bridged Diiron Complexes
作者:Bahaa A. S. Mohamed、Mami Kikuchi、Hisako Hashimoto、Keiji Ueno、Hiromi Tobita、Hiroshi Ogino
DOI:10.1246/cl.2004.112
日期:2004.2
Photoreaction of CpFe(CO)2Me with sterically congested R2GeH2 [R = 2,4,6-C6H2iPr3 (Tip), 2,4,6-C6H2Me3 (Mes)] afforded paramagnetic germylene-bridged diiron complexes having a triplet ground state, Cp2Fe2(μ-CO)2(μ-GeR2) (3a, R = Tip; 3b, R = Mes), while the analogous reaction with R2SnH2 afforded diamagnetic complexes Cp2Fe2(CO)2(μ-CO)(μ-SnR2) (trans-5a, R = Tip; trans-5b, R = Mes). The structure of 3a was determined by X-ray crystallography.
CpFe(CO)2Me 与立体拥塞的 R2GeH2 [R = 2,4,6-C6H2iPr3 (Tip),2,4,6-C6H2Me3 (Mes)]发生光反应,得到了具有三重基态的顺磁性亚甲基二铁配合物 Cp2Fe2(μ-CO)2(μ-GeR2) (3a,R = Tip;3b,R = Mes);3b,R = Mes),而与 R2SnH2 的类似反应则产生了二磁性配合物 Cp2Fe2(CO)2(μ-CO)(μ-SnR2)(反式-5a,R = Tip;反式-5b,R = Mes)。3a 的结构是通过 X 射线晶体学确定的。