Syntheses and characterization of mixed-anion cadmium(II) complexes, structural characterization of [Cd(phen)_2(NO_2)_(1.65)(NO_3)_(0.35)], as a new eight-coordinate Cd(II) complex

摘要

New mixed-anion cadmium(II) complexes of 2.2'-bipyridine (bpy) and 1,10-phenanthroline (phen) ligands, [Cd(phen)_2(NO_2)_(1.65)(NO_3)_(0.35)] and Cd(bpy)(ClO_4)(CH_3COO) have been synthesized and characterized by elemental analysis, IR-, 'H NMR-, ~(13)C- NMR and ~(13) Cd NMR spectroscopy. The single crystal X-ray data of [Cd(phen)_2(NO_2)_(1.65)(NO_3)_(0.35)] show the complex to be a monomer and that the Cd atom has an unsymmetrical eight-coordinate geometry, being coordinated by four nitrogen atoms of 'phen' ligands and four oxygen atoms of the nitrite and nitrate anions. There is a short n-n stacking interaction between parallel aromatic rings.