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Journal of Coordination Chemistry
Year: 2010  |  Volume: 63  |  Issue: 1  |  Page No.: 163 - 175

Synthesis and spectral characterization of homobimetallic molybdenum(VI) complexes derived from bis(2-hydroxy-1-naphthaldehyde)succinoyldihydrazone

Ram A. Lal, Mithun Chakrabarty, Sanjesh Choudhury, Aziz Ahmed, Roshmita BORTHAKUR and Arvind Kumar    

Abstract: The reaction of bis(2-hydroxy-1-naphthaldehyde)succinoyldihydrazone with bis(acetylacetonato)dioxomolybdenum(VI) (MoO2(acac)2) in 1 : 3 molar ratio in EtOH : water mixture (95 : 5) affords a complex of composition [(MoO2)2(nsh)(H2O)2] · C2H5OH. The reaction of [(MoO2)2(nsh)(H2O)2] · C2H5OH with Lewis bases, namely pyridine, 2-picoline, 3-picoline, and 4-picoline, yields [(MoO2)2(nsh)(B)2] · C2H5OH (where B = pyridine, 2-picoline, 3-picoline, and 4-picoline). Further, when this complex was reacted with 1,10-phenanthroline and 2,2'-bipyridine in 1 : 3 molar ratio in anhydrous ethanol the binuclear complexes [(μ2-O)2(MoO2)2(H4nsh)(phen)] · C2H5OH and [(μ2-O)2(MoO2)2(H4nsh)(bpy)] · C2H5OH were obtained. All of the complexes have been characterized by analytical, magnetic moment, and molar conductivity data. The structures of the complexes have been discussed in the light of electronic, IR, 1H NMR, and 13C NMR spectroscopy.

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