Synthesis and Character ation of Novel (Co (II), Ni{11>, .cuM, Zn en>, and Cd(ll)) Binuclear Complexes of N, N- his [(2, 4, 6-trihydroxy metbyl)] Benzidine

Abstract

The Synthesis C!}f a; rw;v Schiff base ligan-d .N ' N - bis(2> 4,6- trjpr;diOXY meth)l) benz1dine l 6L] aAd its c.omplexes w.ith· Co 1ll 1 , Ni('ll); cu Zn(ll) .and Cd(TJJ are reported . The ltgand was prepared by the reaction of 4,4-aniino-biphenyl benzidine with 2,4;6· tnliydro yace ophenon mQnohydmte ander reflux in m tbaool as solvent and a few drops of glacial acetic qid . Then the·complexes were synthes by-· adding the cqn·esp-onding metal salts to the solution of rhe ligah.d in meth nol under. reflux \vith 2:1 metal to liga.nd ralio. Orr 'the basis of, molar conductance, I.R., UV-Vischloride content and atomic absorption the complex-es may he formt:rlated as· [M2 {HtL) CI2.2J--bO] [M=CmNi,Cu·.Zn and Cd] . The data of these j measur:ements suggest a tetrahedra,! g(:!qrnetry Ito Cd.'11\ Gu0!J Zn(ll) ,and cd<tl) complexes and square planar to Ni(il) .