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Violuric acid monohydrate: a second polymorph with more extensive hydrogen bonding

Lookup NU author(s): Kathy Guille, Dr Ross Harrington, Emeritus Professor Bill CleggORCiD


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Crystals of a second polymorph of violuric acid monohydrate [systematic name: pyrimidine-2,4,5,6(1H,3H)-tetrone monohydrate], C4H3N3O4·H2O, have higher density and a more extensive hydrogen-bonding arrangement than the previously reported polymorph. Violuric acid and water mol-ecules form essentially planar hydrogen-bonded sheets, which are stacked in an offset ABCABC repeat pattern involving no ring-stacking inter-actions. © International Union of Crystallography 2007.

Publication metadata

Author(s): Guille K, Harrington RW, Clegg W

Publication type: Article

Publication status: Published

Journal: Acta Crystallographica Section C: Crystal Structure Communications

Year: 2007

Volume: 63

Issue: 6

Pages: o327-o329

ISSN (print): 0108-2701

ISSN (electronic): 1600-5759

Publisher: Wiley-Blackwell Publishing, Inc.


DOI: 10.1107/S010827010701743X

PubMed id: 17551193


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