NON-COVALENT INTERACTIONS IN THE CRYSTAL OF A NEW MACROCYCLIC Ag(I)-Ni(II) BINUCLEAR COMPLEX

A new binuclear complex, [Ag(NiL)(C2H5OH)(NO3)]·C2H5OH, was prepared by using [NiL] as a new “complex ligand ” and was further structurally characterized. The Ag(I) and Ni(II) ions are bridged by the oxamido group from the macrocyclic ligand (L). The coordination environment of the Ag(I) ion is a distorted trigonal bipyramid, and the coordination geometry around the Ni(II) ion is slightly distorted square planar. In the crystal, unique intermolecular π···π interactions between a phenyl ring and three separate π-systems that are not aromatic were observed. The π···π interactions and C–H···O and O– H···O hydrogen bonds link the molecules to form a three-dimensional network. Key words: π···π interaction, hydrogen bond, macrocyclic compound, silver(I)-nickel(II) comple