High oxidation state of organomolybdenum compounds in aqueous medium

High Oxidation State of Organomolybdenum Compounds in Aqueous Medium?Bahar ÇağatayThis thesis covers ?high oxidation state organometallic chemistry? in aquoeus medium,in which reduction reactions of Cp*2Mo2O5 with different reducing agents (H3PO2, NaBH4,-2S2O3 , Zn) have been investigated. The structural characterizations of reduction products have1 31been achieved by elemental analyses, H NMR, P NMR, IR, EPR, Mass spectrometry and X-Ray diffraction. According to these data the probable structures have been assigned to thesereduction products.+The trinuclear cation [Cp*3Mo3O7] obtained by the reaction of Cp*2Mo2O5 with H3PO2(1:2).The reactions of Cp*2Mo2O5 with H3PO2 (1:5) resulted in complex mixtures of reductionproducts, which include monomer, dimer and trimer Cp*Mo species.The previously reported compound Cp*2Mo2O4 was synthesized by a different pathway,using NaBH4 as reducing agent.The reaction of Cp*2Mo2O5 with Zn in MeOH-H2O solution that is acidified with2+CF3COOH leads to the formation of [Cp*3Mo3(µ-O)2(µ-OH)4] ion as a triflouro acetate salt. Thestructure of this compound has been confirmed by X-Ray analysis.Key Words : Molybdenum, Aqueous Organometallic Chemistry, Metal-Metal Bonds, OxoLigands, Hydroxo Ligands