54(4), 2007, pp.903-910

Hydrothermal Synthesis and X-Ray Structural Characterization of Manganese, Nickel, and Cadmium Coordination Polymers Containing 2,3-Pyridinedicarboxylate as Multidentate Ligands

Chia-Hung Yen, Chun-Yu Chen and Kom-Bei Shiu*

Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan, R.O.C.

Abstract.     Three divalent transiton-metal complexes of 2,3-pyridinedicarboxylate (2,3-pda2-), [Mn(2,3-pda)- (H2O)3]¥ (7), [Ni(2,3-pda)(H2O)3]¥ (8), and [Cd2(2,3-pda)2(H2O)]¥ (9) have been hydrothermally synthesized and structurally characterized. X-ray diffraction analyses reveal that compounds 7 and 8 are zigzag- and linear-type one-dimension (1D) coordination polymers, respectively, whereas compound 9 is a three-dimension (3D) coordination polymer. A simple comparison of the coordination geometries with the available neutral analogues {Mx(2,3-pda)x(H2O)y}¥ containing one or two divalent transition-metal atoms and equal ligands in the presence or absence of coordinated water molecules is also presented.

Keyword:  Pyridinedicarboxylate; Coordination polymer; Structure.