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Acta Cryst. (2012). E68, m1559-m1560
[ doi:10.1107/S1600536812048039 ]

Hexacarbonyl-2[kappa]3C,3[kappa]3C-di-[mu]3-sulfido-tetrakis(tetrahydrofuran-1[kappa]O)calciumdiiron(II)(Fe-Fe)

M. A. Ogienko, D. Y. Naumov and S. N. Konchenko

Abstract: Reaction between [Fe2([mu]-S2)(CO)6] and [Ca(thf)4(dpp-BIAN)] [dpp-BIAN = 1,2-bis-(2,6-diisopropylphenylimino)acenaphthene and thf = tetrahydrofuran] proceeds as a redox process via a two-electron reduction of [Fe2([mu]-S2)(CO)6] and a two-electron oxidation of (dpp-BIAN)2-, resulting in the formation of the title heterometallic trinuclear cluster, [CaFe2([mu]3-S)2(C4H8O)4(CO)6], and neutral dpp-BIAN. In the cluster, the CaII atom is connected to two S atoms of an Fe2S2 core [Ca-S = 2.7463 (8) and 2.7523 (8) Å]. No Fe-Ca bonds are formed [Fe...Ca = 3.6708 (6) and 3.5802 (6) Å]. There are five close C-H...O-C contacts in the crystal structure.


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