UV-visible spectroscopic study of the salicyladehyde benzoylhydrazone and its cobalt complexes.
Salicyladehyde benzoylhydrazone (SBH) has three groups suitable for forming coordination bond with transition metal. The UV-vis absorption spectra of SBH and its Co(II) complexes in various media were studied by using the deconvolution method. It is found that the structure of complex in solution is different from those in solid crystals. The nature of complexes in solution depends on acidity of the phenolic proton of SBH and on the medium. In neutral or slightly acid medium, the SBH is a non-charged bidentate ligand. And the "free" hydroxyl group on the SBH molecule makes it possible to form hydrogen bonds in solution. In basic medium, the SBH is a mono, negatively charged tridentates ligand.
Lu
Yi-Heng
YH
Department of Chemical Engineering, Anhui University of Science and Technology, 232001 Huainan, Anhui, China.
Lu
Yu-Wei
YW
Wu
Cheng-Li
CL
Shao
Qun
Q
Chen
Xiao-Ling
XL
Bimbong
Rosa Ngo Biboum
RN
D001547:Benzaldehydes / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D006835:Hydrazones / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D001547:Benzaldehydes; D006835:Hydrazones; D009942:Organometallic Compounds; C073458:salicylaldehyde benzoyl hydrazone; D003035:Cobalt