X-ray Structure of (Bun4N)[Mo(1,2-Benzenedithiolate)3]. Trigonal-Prismatic versus Octahedral Coordination in Tris(1,2-Benzenedithiolate) Complexes

Tris(benzene-1,2-dithiolate)Mo(IV) and Mo(V) have been synthesized by the reduction of [Mo(S2C6H4)3] with (Bu4N)SH. The single-crystal X-ray structure characterization of (Bu4N)[MoV(S2C6H4)3] indicates that this complex anion possesses an unprecedented distorted coordination environment, which is slightly closer to the ideal octahedral than to the trigonal prismatic geometry. The folding angles observed for individual ligands reveal no significant distortions from planarity (mean ligand bend angle 5.8°).