Synthesis, spectral, thermal and biological properties of some novel coordination compounds of VO(IV) and biological 4[N-(4′-ethylbenzalidene) amino] antipyrine thiosemicarbazone and 4[N-(2′, 4′-dimethyl benzalidene amino] antipyrine thiosemicarbazone

In present studies the synthesis, characterization and biological properties of oxovanadium(IV) coordination compounds of 4[N-(4′-ethylbenzalidene)amino] antipyrine thiosemicarbazone (EBAAPTS) and 4[N-(2′,4′-dimethylbenzalidene)amino] antipyrine thiosemicarbazone (DMBAAPTS) with the general composition VOX2L (X = C1-, Br-, I-, NO3-or NCS-) and VO(CIO4)2(L)H2O (L = EBAAPTS or DMBAAPTS) are described . All the complexes were characterized by elemental analyses, molar mass, molar conductance, magnetic susceptibility, infrared and electronic spectra. In all these complexes, both the thiosemicarbazones behave as neutral tridentate (N, N, S) ligands. The thermal properties of the representative complexes are also reported. The most probable geometry of the complexes is proposed.