Crystal structure of heterometallic cluster compounds K5.3Rb0.7[Re3Mo3S8(CN)5] and K4.4Cs1.6[Re3Mo3S8(CN)5]

Abstract

Rhenium-molybdenum cluster compounds K_5.3Rb_0.7[Re₃Mo₃S₈(CN)₅] (1) and K_4.4Cs_1.6[Re₃Mo₃S₈(CN)₅] (2) are obtained by the interaction of an equimolar mixture of ReS₂ and MoS₂ with molten KCN and RbI/CsCl, respectively. The structure of the complexes is determined by the XRD method. The compounds crystallize in the tetragonal crystal system, space group I4/m. The crystal structure is composed of anionic chains of [Re₃Mo₃S₈(CN)₄(CN)_2/2]^6– aligned along the a crystallographic axis and M⁺ cations located in voids of the lattice. The effect of additional Cs⁺ and Rb⁺ cations on the crystallographic parameters and geometric characteristics of the clusters is analyzed.