Nickel(II) Complexes of Schiff Bases Derived from Substituted 1,2,4-Triazole

Abstract

Complexes of nickel(II) with Schiff bases (LH₂), derived fromcondensing salicylaldehyde with 4-amino-3-methyl-5-mercapto-1,2,4-triazole and 4-amino-3-ethyl-5-mercapto-1 ,2,4-triazole, weresynthesised and characterised by elemental analyses, magnetic susceptibility,UV and IR spectral data. The complexes of monoanionicas well as dianionic form of ligand molecules have been isolatedin solid state by adjusting pH of the reaction medium. The electricalconductance data reveal non-electrolyte nature of the complexes.The magnetic susceptibility coupled with electronic spectral datasuggest octahedral geometry for bis-ligated complexes whilemonoligated pyridine complexes are square-planar.