(2,4-Dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylato-κ2 O 4,O 5)(4-oxido-2-oxo-1,2-dihydropyrimidine-5-carboxylato-κ2 O 4,O 5)bis(1,10-phenanthroline-κ2 N,N′)yttrium(III) dihydrate

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—H...N hydrogen bond between the 1,2-dihydropyrimidine units has half occupancy and is disordered around a twofold rotation axis.