Syntheses and structural characterization of two novel oxygen bridged dinuclear Mo-complexes containing bdmpza as ligand, trans-[Mo2O5(bdmpza)2] and trans-[Mo2O3(NCS)2(bdmpza)2] · 4CH3CN

Mixtures of (picH)[Mo(NCS)4(pic)2]/Hbdmpza and (P(C6H5)4)2[MoO(NCS)5]/Hbdmpza or K3[Mo(NCS)6]/Hbdmpza (pic = 4-methylpyridine, Hbdmpza = bis(3,5-dimetylpyrazol-1-yl) acetic acid) were refluxed in acetonitrile. By air-oxidation of solutions, trans-[Mo2O5(bdmpza)2] (1) compound containing dinuclear Mo2O52+ core, and trans-[Mo2O3(NCS)2(bdmpza)2] · 4CH3CN (2) complex containing dinuclear oxo-bridged Mo2O34+ fragment, have been prepared and characterized by single-crystal X-ray crystallography.

Two novel oxo-bridged dinuclear neutral Mo(V) and Mo(VI) complexes have been prepared by reaction of Mo(III) and Mo(V) isothiocyanato compounds with tripod heteroscorpionate N,N,O-ligand (Hbdmpza) and subsequent oxidation by air oxygen. The preparation, IR-spectroscopic and structural characterization of the title compounds are reported.Figure optionsDownload as PowerPoint slide