Lamotriginium Dihydrogen Phosphate-4 (1/1)

Abstract

In the title compound, C<inf>9</inf>H<inf>8</inf>Cl<inf>2</inf>N <inf>5</inf>+·H<inf>2</inf>PO<inf>4</inf> -·C<inf>9</inf>H<inf>11</inf>NO [systematic name: 3,5-diamino-6-(2,3-dichloro-phen-yl)-1,2,4-triazin-2-ium dihydrogen phosphate-4-(dimethyl-amino)-benz-alde-hyde (1/1)], inter-molecular N - H⋯O and O - H⋯O hydrogen bonds produce R<inf>2</inf> 2(8) and R<inf>3</inf>2(8) rings, generating a layer. Inter-molecular N - H⋯N interactions also occur. The dihedral angle between the rings in the cation is 71.73 (12)°.