Structure and Fluorescence Property of a 2D Macrometallacycle Supramolecular Network [Zn2(2-mBIM)2(SUC)2]n

A zinc(II) coordination polymer [Zn-2(2-mBIM)(2)(SUC)(2)](n) (1, 2-mBIM = bis(2-methylimidazo-1-y1) methane, SUC = succinate anion) has been synthesized and characterized by X-ray diffraction. Complex 1 crystallizes in the triclinic space group P (1) over bar with a = 9.4871(8), b = 12.9789(5), c = 14.0230(5) angstrom, a = 90.474(1), beta = 90.3560(10), gamma = 109.691(1)degrees, V= 1529.94(15) angstrom(3), Z= 2, D-c = 1.553 mg/m(3), mu = 1.63 mm(-1), F(000) = 736, the final R = 0.0645 and wR = 0.0951 for 4067 observed reflections with I> 2 sigma(1). Each Zn atom was coordinated by two individual 2-mBEVI ligands in a cis-conformation and two monodentate coordinated succinate anions in a gauche conformation, resulting in the formation of a two-dimensional supramolecular network containing a cationic 16-membered macrometallacycle and a 28-membered macrometallacycle. The result also indicates that the