Synthesis and characterization of a two-dimensional cadmium(II) compound involving covalent and hydrogen bonds

A two-dimensional hydrogen-bonded cadmium(II) compound [Cd(dapm)(2)(CH3COO)(2)(H2O)(2)] (dapm = diaminodiphenylmethane) has been synthesized and characterized by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group C2/c with a = 27.572(3), b = 5.5064(5), c = 23.310(2) Angstrom, beta = 124.785(1)degrees, C15H19Cd0.5ON2O3, M-r =331.52, V = 2906.6(5) Angstrom(3), Z = 4, D-c = 1.515 g/cm(3), F(000) = 1368 and mu = 0.801 mm(-1). The final R = 0.0403 and wR = 0.1014 for 1795 observed reflections with I 46(1). The centrosymmetric Cd(II) is six-coordinated in a distorted octahedral geometry, and the dapm in a trans mode acts as a monodentate ligand. The intermolecular hydrogen bonds among coordinated aqua molecules with coordinated acetate oxygen atoms and uncoordinated dapm nitrogen atoms form a two-dimensional supramolecular framework.