complexation of bis(acetylacetonate)oxovanadium(iv) with d–penicillamine at neutral medium

neutral bidentate n-o type complexe of vo(ii) has been synthesized through condensation of dpenicillamine,(d-h2pen), with bis(acetylacetonate)- oxovanadium(iv),[vo(acac)2], at neutralmedium . the established schiff base(no type) complex was characterized on the basis of ir andmass spectroscopy techniques.besides,d-h2pen binding behavior to[vo(acac)2] has been studiedin thermodynamic viewpoint using uv/vis spectroscopy.the measurments were done in 5mmphosphate buffer,ph 7.0 and various temperatures.the optical absorption spectra of[vo(acac)2]were analyzed in order to obtain binding constants and stoichiometries using squadsoftware.the results show that the best fitting corresponds to 1:2 metal to ligand, complexbetween [vo(acac)2] and d-h2pen.the estimation of binding constant at various temperaturesenabled us to calculate all of the thermodynamic parameters of binding using van,t hoff equation.