Synthesis and spectral studies of some oxovanadium(IV) and vanadium(IV) complexes (original) (raw)

Complexes of oxovanadium(lV) with N,N' -ethylene-bis-(2-aminobenzamide) [EBAB], N,N ' -propylene-bis-(2ami nobenzamide) [PBAB], N.N' -(o-phenylene)-bis-(2-aminobenzamide) [PhBAB], N,N' -ethylene-bis-(3-carboxypropena­ mide) [EBCP], N,N' -propylene-bis-(3-carboxypropenamide) [PBCP]- and 1-(2'-hydroxyphenyl)-3-phenyl-I ,3-propanedione [HPPPD] ha ve bee n prepared and characterized by chemical analyses, molar conductivity, magnetic susceptibility meas­ urements. thermal studies, IR. electroni c and ESR spectra. Further, de-oxygenation react ions of these complexes with thi onyl ch lorid e yie ld vanadium(lV) complexes. The spectral data reveal that oxovanadium(lV) complexes are square py­ ramidal while the va nadium(lV) complexes are octahedral. The chemistry of oxocations I has been very interesting because the metal-oxygen multiple bond in them could be used as an internal molecular probe to understand more about the nature of the metal ligand bonds as the M-L...