摘要
1，2-二（3-取代环戌二烯）四甲基二硅烷与五炭基铁反应生成二铁配合物，它的热重排反应形成硅铁交互排布的同分异构体。X-射线单晶衍射测定结果表明化合物三斜晶系，P1空间群，（3），是单科晶系，P21／a空间群，（3），这对同分异构体有着完全不同的构象：化合物（Ⅰ）由于两个构象不等同的叔庚基而失去了C2对称性，是具有顺式构型的Fe－Fe双核配合物；而化合物（Ⅱ）为Fe－Si交替排布的反式中心对称构型。
The products of heat-arrangement were found by the reaction of 1, 2-di(3-substituted dicyclopentadienyl) tetramethyl disiline with Fe (CO)5, being Fe - Si alternately appeared isomers.The crysTal structures of compound (I)and (Ⅱ) are determinedby X-ray diffraction analysis. triclinic. Pl,monoclinic, P21/a, b=11. 097(3),Thepair of the isomers has a absolutely different configurations: compound(Ⅰ) which lost a C2 symmetry with two unequal t-heptyl groups, is an Fe-Fe dinuclear complex and has a cis-configuration, but compound(Ⅱ) has a symmetric centre with trans-configuration and the Fe-Si bondsalternately appear.
基金
天津市高教局重点学科基金
国家自然科学基金
