Acta Cryst. (2002). E58, m354-m356  [ doi:10.1107/S1600536802010826 ]

A polymeric cerium(III) complex of dipicolinic acid

N. Okabe, H. Kyoyama and A. Fujimoto

Abstract: The title compound, catena-poly[[[diaqua(6-carboxypyridine-2-carboxylato-O,N,O')cerium(III)]--(pyridine-2,6-dicarboxylato-O,N,O':O'')] tetrahydrate], [Ce^III(C₇H₄NO₄)(C₇H₃NO₄)(H₂O)₂]·4H₂O, is a polymeric complex, in which Ce^III ions are linked by carboxylate O atoms of the ligands. Each Ce is coordinated by two N,O,O'-tridentate dipicolinate ligands, one of which is monoprotonated, and by two O atoms of water molecules. The coordination number of Ce is nine, because of the additional bridging Ce-O bond formed by one ligand.

Online 21 June 2002

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