A comparative study of Ni(II) with N-H, N-ō, S-ō, ō-ō donar atoms as secondary ligand

In this paper a comparative study is carried out on binary, NiL 2 , and ternary NiAL complexes. Where A=2, 2 4 bipyridyl amine or 2.2 bipyridyl and L=N-N or N-Ō or S-Ō or Ō-Ō donating ligand. The order of stabilities of binary & ternary complexes is explained on the basicities of the ligand & ring size of the chelate. The sequence in order is explained in terms of M  L π interaction, size of chelate ring & steric factor. The same order is followed both by ternary complexes and binary