Synthesis, characterization, and luminescence of zinc(II) and cadmium(II) coordination complexes: [Zn(phen)2(CH3COO)](ClO4), [Zn(bpy)2(ClO4)](ClO4), and [Cd(phen)2(NO3)2]

摘要

Three metal complexes, [Zn(phen)2 (CH3COO)](ClO4) (1), [Zn(bpy)2 (ClO4)](ClO4) (2), and [Cd(phen)2 (NO3)2] (3) (phen = 1,10-phenanthroline, bpy = 2,2{Abedini, 2005 #222}-bipyridine), were synthesized and their structures were determined by single-crystal X-ray diffraction analyses. In 1, Zn(II) is coordinated by 4 nitrogen atoms from 2 phen molecules and 2 oxygen atoms from 1 acetato to form an octahedral configuration. In 2, Zn(II) has pentacoordination geometry with chelating 2 bpy and 1 perchlorato ion. In 3, phen and NO3~- serve as bidentate ligands coordinating to Cd(II) through their nitrogen and oxygen atoms to form 8 coordination. Three-dimensional frameworks of complexes 1-3 are produced by hydrogen bonding, and π — π and C-H···π interactions. Additionally, complexes 1-3 exhibit strong solid state fluorescent emission at room temperature.