Syntheses and characterizations of cluster compounds with MoFe3Se4 cubane-like core

The reaction system of [Et4N]2MoSe4, FeCl2 and R2NCS2Na in DMF-CH3CN at ambient temperature yielded the Mo-Fe-Se cluster compounds MoFe3Se4(m-R2NCS2)2(R2NCS2)4 (R2=Me2(1), Et2(2), C4H8(3)) with MoFe3Se4 core. X-ray diffraction analyses of 2 revealed that the molecular structure contains a distorted cubane like M4Se4 core with two bridged and four chelated Et2NCS2- ligands. The cyclic voltammetric studies of the compounds showed the reversible multielectron-transfer sequence.