SYNTHESES AND CHARACTERIZATIONS OF THE NEW TETRANUCLEAR RHENIUM CLUSTER COMPOUNDS RE-4(MU(3)-Q)(4)(TECL2)(4)CL-8 (Q=S,SE, TE)

Three chalcogeno chloro Re-4 cluster compounds Re-4(mu(3)-Q)(4)(TeCl2) (4)Cl-8 (Q = S, Se, Te) (1, 2, 3) have been synthesized by the reactio n of ReCl5 and elemental Te with elemental S or Se at 400 degrees C (1 , 2) or by the reaction of ReCl5 with elemental Te at 350 degrees C (3 ). All three compounds have been characterized by single-crystal X-ray diffraction methods. Each of these compounds contains a Re(4)Q(4) cub ane-like core with two terminal chloro ligands and one neutral termina l TeCl2 ligand on each Re center.