Synthesis and Characterization of Complexes of Cobalt(II), Nickel(II) and Copper(II) with Substituted Pyrazoline.

Abstract

Crystalline complexes of Co(II), Ni(II) and Cu(II) with ligand 3-phenyl 5-(2-hydroxyphenyl) pyrazoline have been synthesised by extraction method in a M : L ratio of 1 : 2. Finally extracted complexes are refluxed in benzene. The cobalt and copper complexes are paramagnetic whereas nickel is dimagnetic. The complexes of Co(II), Ni(II) and Cu(II) has been assigned as ML₂ type showing Cu(II) of square-planer species and Co(II) and Ni(II) of six coordinated octahedral geometry.