Three nickel (II) complexes with N, N′-ethylenebis (o-mercaptobenzamide), H 4 ebtsa, a quadridentate {S 2 N 2} ligand classified as a PAC (polyanionic chelating) ligand, were isolated. Although they were different in their apparent charges, their coordination units were revealed to be equal from their physicochemical behavior. They will be described as Ni (H 2 ebtsa). EXAFS and XANES study was undertaken for one of the new compounds, and the ...