Acta Cryst. (2007). E63, m2263-m2264  [ doi:10.1107/S1600536807037087 ]

catena-Poly[[[diaqua(3-nitrobenzoato-²O,O')erbium(III)]-di--3-nitrobenzoato-⁴O:O'] 2,2'-diamino-4,4'-bi-1,3-thiazole]

B.-X. Liu, G.-H. Chen and L.-J. Zhang

Abstract: In the title compound, {[Er(C₇H₄NO₄)₃(H₂O)₂]·C₆H₆N₄S₂}_n, the Er^III ion displays a distorted tetragonal-antiprismatic coordination geometry, formed by five 3-nitrobenzoate anions and two water molecules. Among the three crystallographically independent nitrobenzoate anions, one chelates an Er^III ion and two bridge adjacent Er^III ions to form a one-dimensional polymeric chain extending along the a axis. The uncoordinated diaminobithiazole molecules are centrosymmetric and link with the Er^III complex via hydrogen bonding.

Online 3 August 2007

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