Acta Cryst. (2008). E64, m120-m121  [ doi:10.1107/S1600536807064306 ]

A one-dimensional ladder-like coordination polymer: poly[[hexaaquabis(-5-nitrobenzene-1,3-dicarboxylato-³O,O',O'')(-oxalato-⁴O,O':O'',O''')diyttrium(III)] trihydrate]

Z. Fu, Y. Lin, Y.-Y. Zhou and H.-T. Zhang

Abstract: In the crystal structure of the title one-dimensional coordination polymer, [Y₂(C₈H₃NO₆)₂(C₂O₄)(H₂O)₆]·3H₂O, each Y^III ion is bridged to its neighbours by two 5-nitrobenzene-1,3-dicarboxylate (nbdc) dianions and one oxalate dianion (located on an inversion centre) to form a ladder-like polymeric structure. The two carboxylate groups of nbdc assume different modes of coordination, one is chelating whereas the other is monodentate. Three water molecules coordinate to the Y^III ion to complete an eight-coordinate distorted dodecahedral geometry. The ladder-like polymers are assembled together by hydrogen bonding and - stacking [centrio-centriod distance = 3.819 (9) Å] in the crystal structure.

Online 6 December 2007

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