Publication: An orthorhombic polymorph of melaminium chloride hemihydrate
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2007-12-01
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16005368
16005368
16005368
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2-s2.0-57349109987
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Mahidol University
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Acta Crystallographica Section E: Structure Reports Online. Vol.63, No.5 (2007)
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Umporn Athikomrattanakul, Chamras Promptmas, Martin Katterle, Uwe Schilde (2007). An orthorhombic polymorph of melaminium chloride hemihydrate. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/24328.
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An orthorhombic polymorph of melaminium chloride hemihydrate
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Abstract
Crystals of an ortho-rhom-bic polymorph of 2,4,6-triamino-1,3,5-triazin-1- ium chloride hemihydrate, C3H7N6+·Cl-·0. 5H2O, were obtained by cocrystallization experiments under aqueous acidic conditions (HCl, pH = 2). In the crystal structure, the melaminium ions, chloride anions and water mol-ecules are linked via hydrogen bonds. All H atoms of the melaminium cation are involved in hydrogen bonds. The chloride anions and the water mol-ecules lie on mirror planes. In the c direction, the melaminium ions are stacked by π-π inter-actions. © 2007 International Union of Crystallography. All rights reserved.