Synthesis, crystal structures, and luminescent properties of Zn(II)/Cd(II) complexes assembled by 4-aminophenylhydroxamic acid

Abstract

Two coordination complexes, namely [Zn2(4-APha)2(CH3COO)2(H2O)2] (1) and [Cd(4-APha)·(CH3COO)(H2O)0.5]4·6H2O (2) (4-APha = 4-aminophenylhydroxamic acid), are synthesized by the solvothermal method. They are characterized by single crystal X-ray diffraction, IR, TGA, and elemental analysis. Structural analyses reveal that both complexes 1 and 2 belong to the monoclinic system, space group C2/c. The difference is that complex 1 shows a binuclear structure and complex 2 displays a 3D structure. It is noteworthy that complex 1 exhibits an excellent thermal stability and no weight loss below 117 °C. Meanwhile, the luminescent pro­perties of complexes 1 and 2 in the solid state are also investigated at room temperature.