Synthesis and Crystal Structure of Cadmium（Ⅱ） Complex [Cd（H2O）（CH3OC6H4COO）2]n

1 INTRODUCTION Cadmium (Ⅱ) complexes have been exten- sively studied from both chemical and structural views, mainly due to the capability of cadmium (Ⅱ) (shared by most d10 metal ions) to adopt different modes of coordination determined by the consideration of size, as well as electrostatic and covalent bonding forces1]. And the field of coordination polymers has witnessed tremendous growth over the last decade2]. Many coordination polymeric networks have been shown to posses intere…

Synthesis and Crystal Structure of Cadmium(Ⅱ)Complex [Cd(H2O)(CH3OC6H4COO)2]n

At room temperature, the reaction of CdNO32@4H2O and anisic acid in an ethanol solution affords the cadmium (Ⅱ) complex Cd(H2O)(CH3OC6H4COO)2]n. The crystal is of monoclinic, empirical formula C16H16O7Cd, Mr = 432.69, space group C2/c with parameters: a = 34.211(2), b = 6.030(2), c = 7.611(3)A, β = 95.619(5)°, V = 1562.5(9)A3, Z = 4, Dc = 1.831 g/cm3, μ = 1.434 mm-1, F000 = 856, R = 0.0215 and wR = 0.0456. 1121 reflections with I>2σ(I) were considered to be observed. Each cadmium atom is seven-coordinate in a distorted pentagonal bipyramidal geometry. The Cd (Ⅱ) center is doubly bridged with the neighboring Cd centers by anisate ligands to form a four-membered ring with a repeating unit of Cd-O-Cd-O-. The extended structure and hydrogen-bonding patterns displayed in the complex were studied.