SYNTHESIS AND CHARACTERIZATION OF ADENINE HISTIDINE TERNARY COMPLEXES

Four novel mixed adenine-L-histidine ternary complexes of Cu(II) and N i(II) have been synthesized in the solid state by the interaction of M Cl2.nH2O or M(NO3)2.nH2O with adenine and L-histidine (1:1:1) in triet hyl orthoformate. The complexes have been characterized by elemental a nd thermogravimetric analyses, magnetic measurements and infrared /ele ctronic spectral studies. The carboxylic, the N imidazolic and amino g roups of the amino acid participate in the bonding and the interaction of the metal ion with the adenine ring seems to occur through the N(9 ) site with additional participation of the N(6)H2