1008099-71-5Relevant academic research and scientific papers
Spectral and structural studies of nickel(II) complexes of salicylaldehyde 3-azacyclothiosemicarbazones
Latheef, Leji,Prathapachandra Kurup, Maliyeckal R.
, p. 35 - 43 (2008)
Mononuclear nickel(II) complexes with two ONS donor thiosemicarbazone ligands {salicylaldehyde 3-hexamethyleneiminyl thiosemicarbazone [H2L1] and salicylaldehyde 3-tetramethyleneiminyl thiosemicarbazone [H2L2]} have been prepared and physico-chemically characterized. IR and electronic spectra of the complexes have been obtained. The thiosemicarbazones bind to the metal as dianionic ONS donor ligands in all the complexes except in [Ni(HL1)2] (1). In compound 1, the ligand is coordinated as a monoanionic (HL-) one. The magnetic susceptibility measurements indicate that all the complexes are mononuclear and are diamagnetic. The complexes were given the formulae [Ni(HL1)2] (1), [NiL1py] (2), [NiL1α-pic] (3), [NiL1γ-pic] · H2O (4), [NiL2py] (5) and [NiL2γ-pic] (6). The structures of compounds 2 and 3 have been solved by single crystal X-ray crystallography and were found to be distorted square planar in geometry with coordination of azomethine nitrogen, thiolato sulfur, phenolato oxygen and pyridyl nitrogen atoms.
