Structural characterization of ladder-type cadmium(II) citrate complex, (C3H12N2)[{Cd(H2O)(C6H5O7)}(2)]center dot 6H(2)O

The title complex, (C3H12N2)[{Cd(H2O)(C6H5O7)}(2)]center dot 6H(2)O, I, has been prepared and its structure characterized by FT-IR, EDS, elemental analysis, ICP-AES, and X-ray single crystallography. It is triclinic system, P1 space group with a = 10.236(2), b = 11.318(2), c = 13.198(2)(A) over circle, alpha = 77.95(1)degrees, beta = 68.10(1)degrees,gamma = 78.12(1)degrees, V = 1373.5(3)(A) over circle (3), Z = 2. Complex I has constituted by protonated 1,3- diaminopropane cations, citrate coordinated cadmium(II) anions, and free water molecules. The central cadmium atoms have a capped trigonal prism geometry by seven coordination with six oxygen atoms of three different citrate ligands and one water molecule. Citrate ligands are bridged to three different cadmium atoms. Each cadmium atom is linked by carboxylate and hydroxyl groups of citrate ligand to construct an one- dimensional ladder- type assembly structure. The polymeric crystal structure is stabilized by three- dimensional networks of the intermolecular O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen-bonding interaction.