PREPARATION OF OMOCL(ACAC)2 BY A NOVEL OXYGEN-CHLORINE ATOM EXCHANGE AND ITS USE AS A REAGENT FOR THE SYNTHESIS OF MONOMERIC MOLYBDENUM(V) COMPLEXES

The known monomeric Mo(V) complex OMoCl(acac)2 has been prepared by a unique new reaction involving an overall oxygen-chlorine atom exchange between MoO2(acac) and MoCl2(acac)2. OMoCl(acac)2 undergoes substitution reactions with the acid forms of a number of bi- and tetradentate ligands to produce the complexes OMoClL2 [L = 8-hydroxyquinolinato, 8-mercaptoquininolato, S2P(i-Pr)2] and OMoClL′ (L′ = salen, salpn, salphen). Spectral (IR, visible, EPR) characterization data for these complexes and for OMoCl(acac)2 itself are presented and in some cases are used to assign the stereochemistry of the species. © 1978.