The NaCl Adduct of the Iron-Indium Compound Fe2(CO)6(μ-CO)(μ-InR)2 [R = C(SiMe3)3] – a One-Dimensional Coordination Polymer with Sodium Oxygen Bridges

The organoindium subhalide [R(Cl)In-In(Cl)R]2 [R = C(SiMe3)3] 1 reacts with Na2[Fe2(CO)8] to form an iron-indium coordination compound which was isolated as the sodium choride adduct [Na(THF)4][Fe2(CO)6(μ-CO)(μ-InR)2Cl] 2. The iron atoms of 2 are bridged by a CO ligand and two InR groups, the indium atoms of which are further connected by the μ2-bridging chlorine atom. Four THF molecules and two oxygen atoms of terminal CO ligands of different anions span the coordination sphere of the sodium cations to give a one-dimensional coordination polymer in the solid state.