title: 2,6-Dimethoxy-7,9-dimethylpurinium iodide hemihydrate.
abstract: In the title compound, C(9)H(13)N(4)O(2)(+) x I(-) x 0.5 H(2)O, the non-H atoms of the ionic components lie on a mirror plane in Cmca, with the O atom of the partial water molecule lying on a twofold rotation axis. Whereas one of the methoxy methyl groups is directed away from the adjacent N-methyl group, the other methoxy methyl group is directed towards its adjacent N-methyl group. The conformation of the methoxy methyl groups provides an explanation for the outcomes of intramolecular thermal rearrangements of 2,6-dialkoxy-7,9-dimethylpurinium salts.
authors.affiliation: Department of Organic Chemistry, The Medical University of Silesia, ul. Jagiellońska 4, 41-200 Sosnowiec, Poland. kowalska@slam.katowice.pl
authors.forename: Alicja
authors.initials: A
authors.lastname: Kowalska
authors.forename: Krystian
authors.initials: K
authors.lastname: Pluta
authors.forename: Kinga
authors.initials: K
authors.lastname: Suwińska
mesh_terms: D008968:Molecular Conformation; D011687:Purines / Q000737:chemistry*
chemical_list: D011687:Purines