New Dinuclear Molybdenum(V) Complexes With β′-Hydroxy-β-enaminones Containing a 4-Hydroxy-2-pyrone Ring

Abstract

New dinuclear molybdenum(V) complexes of the general formula [Mo2O4L2D2], were prepared by the reaction of [Mo2O3(acac)4] (acac = acetylacetonate ion) with β′-hydroxy-β-enaminones (L). All prepared complexes consist of Mo2O42+ cores coordinated by two ligands L via two donor oxygen atoms as in the analogous β-diketonates. The usual octahedral coordination around the molybdenum atoms is completed by the monodentate solvent molecules D (methanol, ethanol, or 2-propanol). All compounds were characterized by elemental analyses, IR, one- and two-dimensional NMR spectra, and thermal analysis, and some of them by X-ray crystallography (1a, 4a, 8b, and 9a). (© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)