Investigations on the Solvolysis of Molybdenyl(V) Cation in Acetylacetone

Department of Pure Chemistry, University College of Science, Calcutta-700 009

Manuscript received 19 April 1982, accepted 18 January 1983

Pyridinium oxotribalo-acetylacetonato molybdate(V), PyH(MoOX₃.acac), has been isolated in the pure state by refluxing pyridinium oxopentahalomolybdate(V), (PyH)₂(MoOCI₅] with acetylacetoue. However, refluxing bipyridyl and 1,10-phenan-throline salts of oxohalomolybdate(V) with acetylacetone results in trans-oxotrihalo(L)- molybdenum(V) [MoOX₃.L] (X=CI, Br and L=bipy or phen). Non-electrolytic oxodihalo(pyridine)(acetylacetonato)molybdenum(V) (MoOX₂. acac.Py] (acac=acetylacetone) has been synthesised by thermal dehydrohalogenation of PyH[MoOX₃ .acac]. All these are the manifestation of the solvolytic reaction of molyhdenyi(V) cation .. "MoO³⁺" with acetyl acetone. All the compounds have been studied by various physicochemical methods.