Acta Cryst. (2008). E64, m1166-m1167  [ doi:10.1107/S1600536808025701 ]

(2,4-Dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylato-²O⁴,O⁵)(4-oxido-2-oxo-1,2-dihydropyrimidine-5-carboxylato-²O⁴,O⁵)bis(1,10-phenanthroline-²N,N')yttrium(III) dihydrate

W. Xiong, H. Xing, Y. Su and Z. Chen

Abstract: In the title compound, [Y(C₅H₂N₂O₄)(C₅H₃N₂O₄)(C₁₂H₈N₂)₂]·2H₂O, the Y^III ion lies on a twofold rotation axis and exhibits a distorted square-antiprismatic coordination geometry. It is chelated by two 1,10-phenanthroline ligands, a 2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate monoanion and a 4-oxido-2-oxo-1,2-dihydropyrimidine-5-carboxylate dianion. The H atom involved in an N-HN hydrogen bond between the 1,2-dihydropyrimidine units has half occupancy and is disordered around a twofold rotation axis.

Online 16 August 2008

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