catena-Poly[[[diaqua-[3-(pyridin-4-yl)benzoato-κ(2)O,O']gadolinium(III)]-bis-[μ-3-(pyridin-4-yl)benzoato-κ(2)O:O']] monohydrate].
In the title coordination polymer, {[Gd(C(12)H(8)NO(2))(3)(H(2)O)(2)]·H(2)O}(n), the Gd(III) ion is ligated by one bidentate carboxyl-ate group, four monodentate bridging carboxyl-ate O atoms and two water mol-ecules. The resulting GdO(8) polyhedron approximates to a square anti-prism. The bridging ligands link the metal ions into a [100] chain, with each pair of adjacent metal ions being bridged by two ligands. Inter-chain O-H⋯O and O-H⋯N hydrogen bonds help to establish the packing.
Department of Environmental and Municipal Engineering, North China University of Water Conservancy and Electric Power, Zhengzhou 450011,  People's Republic of China.
Dong-Ying
DY
Li
Guo-Ting
GT
Li