metal-organic compounds
Open access
In the title compound, [Mg(C6H2N2O4)(H2O)4]·H2O, the MgII ion is coordinated by a fully deprotonated pyrimidine-4,6-dicarboxylate molecule, via a ring N and a carboxylate O atom, and by four water O atoms at the apices of a slightly distorted octahedron. In the crystal, molecules are linked by O—HO and O—HN hydrogen bonds, forming a three-dimensional network.
organic compounds
Open access
The crystal structure of the title compound, C5H4N2O2, is built of acid molecules located on a mirror plane. They form sheets stacked along the b-axis direction. The molecules interact via O—HN hydrogen bonds, forming [001] chains, and weak van der Waals interactions.