Acta Cryst. (2008). E64, m1166-m1167 [ doi:10.1107/S1600536808025701 ]
Abstract: In the title compound, [Y(C5H2N2O4)(C5H3N2O4)(C12H8N2)2]·2H2O, the YIII 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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