Framework coordination polymer based on the [Re 3 Mo 3 S 8 (CN) 6 ] 6– heterometallic cluster anions and Cd 2+ cations

A new coordination polymer, [Cd(NH3)4]2{Cd[Re3Mo3S8(CN)6]}·1.5H2O (I), was prepared by the reaction between solutions of Cd(CH3COO)2 · 2H2O in aqueous ammonia and CaK4[Re3Mo3S8(CN)6] · 8H2O in water. The crystals are cubic, space group Fm3m (Prussian blue structural type); a = 15.0268(4) A (CIF file CSD no. 431555). According to ESR data, compound I is paramagnetic, g-factor is 2.298. Thermal stability investigation by TGA and powder X-ray diffraction showed that elimination of coordinated NH3 molecules is accompanied by sample amorphization.