Bis[mu-1-(1,10-phenanthrolin-2-yl)-2-pyridone]bis{aqua[1-(1,10-phenanthrolin-2-yl)-2-pyridone]cadmium(II)} tetrakis(perchlorate)

Abstract

In the title centrosymmetric binuclear complex, [Cd2(C17H11N3O)4(H2O)2](ClO4)4, the Cd(II) ion assumes a distorted octahedral geometry. There are pi-pi stacking interactions between the pyridine and 1,10-phenanthroline ring systems of adjacent ligands at the same Cd(II) centre. Intermolecular hydrogen bonds between the coordinated aqua ligand and the O atom of a keto group connect adjacent complex cations into extended chains. Hydrogen bonds also exist between the complex cations and the perchlorate anions. Compared with the fluorescence spectrum of the organic ligand, the complex displays strong fluorescent emission and an ipsochromic shift of the emission peaks, which may be attributed to the structural character.