Studies on Novel Unsymmetrical Azomethines. Part I. Nickel(II) Complexes of Unsymmertrical Tetradentate Azomethines

Abstract

Square planar nickel (II) complexes of unsymmetrical tetradentate azomethines having the general formula, (-OC₁₀H₆CH:NXN:C(R)C₆H₄O-)Ni (where R=H or CH₃ and X= -(CH₂)₃-, -(CH₂)₆ - or -o-C₆H₄ -) have been synthesized by the reactions of diamines such as 1,3-propane-diamine, 1,6-hexanediamine or o-phenylenediamine with the mixed complexes of the type NILL' (where LH is 2-hydroxy-1-naphthaldimine and L'H is salicylaldimine or o-hydroxyacetophenonimine). Reactions of the diamines with the mixed complex (salicylaldehydato) (o-hydroxy-acetophenonato)nickel (II) have also resulted in the formation of similar complexes, (-OC₆H₄CH=NXN=C(CH₃)C₆H₄O-)Ni. All the complexes have been characterized by elemental analyses, TLC, conductance, IR and UV spectra and possible structures have been indicated.