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5,5-Dimethyl-2-phenyl-4,5-dihydro-1,2,4-triazolo[1,5-a][1,3,5]triazin-7-amine

✍ Scribed by Dolzhenko, Anton V. ;Tan, Geok Kheng ;Koh, Lip Lin ;Dolzhenko, Anna V. ;Chui, Wai Keung

Publisher: International Union of Crystallography
Year: 2007
Tongue: English
Weight: 945 KB
Volume: 63
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536807021022

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✦ Synopsis

The title compound, C 12 H 14 N 6 , was synthesized via cyclocondensation of 5-amino-1-guanyl-3-phenyl-1,2,4-triazole with acetone. Only one tautomeric form with an H atom at the triazine N atom was observed in the crystal structure. The compound crystallizes with two almost identical molecules in the asymmetric unit. In both molecules, the triazine ring adopts a conformation intermediate between a twist-boat and a half-boat. The crystal packing is stabilized by intermolecular N-HÁ Á ÁN hydrogen bonds.

Related literature

The 1,2,4-triazolo[1,5-a][1,3,5]triazine (5-azapurine) heterocyclic system has been reviewed by Dolzhenko et al. (2006).

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