Molybdenum(V) complexes with monothio-β-diketones: thiodipivaloylmethane, thiodibenzoylmethane and benzoylthioacetone

Abstract

The preparations of oxomolybdenum(V) complexes with thiodipivaloylmethane (Htdpm), [Mo₂O₃(tdpm)₄]1 and [Bu^t₂C₃HS₂][MoO(SH)₃(tdpm)]2, thiodibenzoylmethane (Htdbm), [Mo₂O₃(tdpm)₄]3, and both benzoylacetone (Hba) and benzoylthioacetone (Hbta), [Mo₂O₃(ba)₃(bta)]4, are described. Crystal structures of 1 and 2 have been determined by X-ray diffraction techniques. Complex 1 is dinuclear, the anion of 2 mononuclear, both containing the molybdenum atoms in distorted-octahedral geometry. The charge transfer between the cation and anion of 2 is associated with close contacts between both the dithiolylium sulfurs and the SH-sulfur atom S(3)[S ⋯ S 3.335(2) and 3.515(2)Å].