Toggle Main Menu Toggle Search

Open Access padlockePrints

Anhydrous guanine: A synchrotron study

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


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Very small crystals of anhydrous guanine (systematic name: 2-amino-l,7-dihydro-6H-purin-6-one), C5H5N5O, were obtained from an attempted solvothermal synthesis of a potassium complex. Data were collected at 120 K using a synchrotron radiation source. There is one essentially planar molecule in the asymmetric unit. Molecules are linked to each other by N-H⋯N and N-H⋯O hydrogen bonds to form sheets, between which there are π-π stacking interactions. This crystal structure determination demonstrates conclusively that, in the absence of any solvent or other molecules, guanine exists as the amino-keto tautomer in the solid state, with H atoms attached to N1 and N7 (purine numbering), unlike its monohydrate, which has H atoms on N1 and N9. © 2006 International Union of Crystallography.

Publication metadata

Author(s): Guille K, Clegg W

Publication type: Article

Publication status: Published

Journal: Acta Crystallographica Section C: Crystal Structure Communications

Year: 2006

Volume: 62

Issue: 8

Pages: o515-o517

ISSN (print): 0108-2701

ISSN (electronic): 1600-5759

Publisher: Wiley-Blackwell


DOI: 10.1107/S0108270106026011

PubMed id: 16891735


Altmetrics provided by Altmetric