5-[2,4-Dihy-dr-oxy-5-(5-hy-dr-oxy-2,4,6-trioxo-3,5-di-hydro-1H-pyrimidin-5-yl)-3-meth--oxy-phen-yl]-5-hy-droxy-3,5-di-hydro-1H-pyrimidine-2,4,6-trione penta-hydrate

摘要

The title compound, C15H12N4O11·5H2O, has a `propeller-like' structure. The two alloxan units have screw-boat conformations. Their mean planes are normal to the central aromatic ring with dihedral angles of 87.91?(7) and 88.27?(7)°, and they are inclined to one another by 40.86?(7)°. In the crystal, mol-ecules are linked?via?O—H?O and N—H?O hydrogen bonds, forming a three-dimensional framework. There are also C—H?O hydrogen bonds present within the framework.