The title complex crystallizes in monoclinic system with space group P2(1)/n, a = 15.244(4) Angstrom, b = 20.895(7) Angstrom, c = 12.375(4) Angstrom, beta = 97.39(3)degrees, Z = 4, Mr = 933.84, V = 3909(2) Angstrom(3), Dc = 1.587g.cm(-3), F(000) = 1872. The final R = 0.0684. It has tetranuclear centrosymmetric dimeric structure. The molecule features a planar Sn2O2 unit with two exo-cyclic tin atoms connected to two bridging oxygen atoms of the Sn2O2 unit. There are two independent FcCOO (Fe = ferrocenyl) ligands in the structure, one is bidentate bridging and bridges both the endo- and exo-cyclic tin atoms by using both oxygen atoms, and other is monodentate and coordinated only to exo-cyclic tin atom. The result is that both tin atoms are five-coordination, have a distorted trigonal bipyramidal geometry with an additional week interaction between another oxygen atom and tin atom. Its crystal structure differs from the similar {[FcCO(2)Sn(n-Bu)(2)]O}(2). 4C(6)H(6) at all. However there are inevitable relationship between them. The variety of the structural mode of this kind of organotin compounds predicts the internal factor about its chemical reactivity and bio-activity, and will provide experimental grounds for new kinetic process mode of coordinate chemistry.
