Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 1 (January 2004)

Acta Cryst. (2004). C60, o44-o46 [doi:10.1107/S010827010302314X]

Two hydrates of 6-methoxypurine

N. Fridman, M. Kapon and M. Kaftory

Abstract: 6-Methoxypurine crystallizes from N,N-methylformamide as the hemihydrate, C₆H₆N₄O·0.5H₂O, and from water as the trihydrate, C₆H₆N₄O·3H₂O. Both forms crystallize in the triclinic crystal system. Upon heating the trihydrate, molecules of water are liberated successively; the hemihydrate is formed at 383 K. In the hemihydrate, the H atom on the imidazole N atom is disordered between the two N atoms. The water molecule in the hemihydrate and the H atoms of a water molecule in the trihydrate are also disordered. In the hemihydrate, the organic moieties are connected by N-HN hydrogen bonds, while they are connected via water molecules in the trihydrate.

Formula: C₆H₆N₄O·0.5H₂O and C₆H₆N₄O·3H₂O

Online 6 December 2003


	Structure factor file (CIF format) (126.4 kbytes) Contains datablock I

	Structure factor file (CIF format) (86.9 kbytes) Contains datablock II

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