title: Oxonium 5-aminouracil-6-sulfonate hydrate.
abstract: In the title compound, oxonium 5-amino-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-sulfonate hydrate, H3O(+)-C4H4N3O5S(-)-H2O, the sulfonate group is in the anionic form and charge balance is provided by an oxonium cation, H3O(+). Screw-related molecules overlap significantly and are hydrogen bonded to form a zigzag chain of the uracil skeleton along the direction of the c screw axis. The partially stacked bases and their glide-related equivalents run parallel to the a axis to form hydrophobic zones separated by hydrophilic zones built up by a network of hydrogen bonds.
authors.affiliation: Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India.
authors.forename: G
authors.initials: G
authors.lastname: Mazumder
authors.forename: M
authors.initials: M
authors.lastname: De
authors.forename: S K
authors.initials: SK
authors.lastname: Mazumder
authors.forename: A
authors.initials: A
authors.lastname: Mukhopadhyay
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D015394:Molecular Structure; D009690:Nucleic Acid Conformation; D014498:Uracil / Q000031:analogs & derivatives / Q000737:chemistry*; D014500:Uracil Nucleotides / Q000737:chemistry*
chemical_list: C431286:5-aminouracil-6-sulfonic acid; D014500:Uracil Nucleotides; D014498:Uracil