Synthesis and characterization of new dioxomolybdenum(VI) complexes derived from benzophenone-thiosemicarbazone (H₂L). Crystal structure of [MoO₂L(PrOH)]

Abstract

Five mixed-ligand complexes of dioxomolybdenum(VI) [MoO2L(ROH)], where L is dianionic form of the 2-hydroxybenzophenone S-methyl-4-phenyl-thiosemicarbazone (H2L) and ROH are n-alcohols (C n H2n+1–OH; n = 1 − 5) were synthesized and characterized by elemental analysis, electronic, infrared and 1H-NMR spectroscopies. The ligand is coordinated to the cis- core through ONN, while the sixth coordination site is occupied by alcohol. The crystal structure of [MoO2L(PrOH] complex was determined by single crystal X-ray diffraction method. Effect of the 4-phenyl substituent on conjugation of chelate rings was discussed.