Binuclear complexes of CuII and NiII Schiff base of 2-hydroxy-1-naphthaldehyde and o-phenylenediamine with alkali metal salts of oxygen and nitrogen containing organic acids

Abstract

A number of stable heterobinuclear alkali metal complexes of general formula M a PhN.M b L, where M a = Cull or Ni II ; M b = Li, Na or K; PhN = N,N'-1,2-phenylene-bis(2-hydroxy-1-naphthaldimine); L = deprotonated o-nitrophenol (ONP), 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP) or 1-nitroso-2-naphthol (1N2N) have been synthesized using Cull or Ni II metal chelates of Schiff base and alkali metal salts of ONP, DNP, TNP and 1N2N. The IR spectra suggest bonding between the Ni II or Cull metal chelate and alkali metal which appear by dative bond via oxygen atoms of C-O (phenolic). Low value of molar conductance would suggest them to be non-electrolyte. These complexes are biologically active against bacteria viz. E. coli and S. aureus and fungus viz. C. albicans and so these may be treated as good antibacterial agents and fungicides. It was therefore, though Interesting to synthesize the title compounds and examine their antimicrobial activity.