2-amino-5-chloropyrimidin-1-ium hydrogen maleate

• Main Authors: Fun, Hoong-Kun., Hemamalini, Madhukar., Rajakannan, Venkatachalam.
• Other Authors: School of Biological Sciences
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Science::Chemistry::Crystallography
• Online Access: https://hdl.handle.net/10356/95364; http://hdl.handle.net/10220/9279
• Institution: Nanyang Technological University

In the title salt, C4H5ClN3+·C4H3O4-, the 2-amino-5-chloropyrimidinium cation is protonated at one of its pyrimidine N atoms. In the roughly planar (r.m.s. deviation = 0.026 Å) hydrogen malate anion, an intramolecular O-HO hydrogen bond generates an S(7) ring. In the crystal, the protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxylate O atoms of the anion via a pair of N-HO hydrogen bonds, forming an R22(8) ring motif. The ion pairs are connected via further N-HO hydrogen bonds and a short C-HO interaction, forming layers lying parallel to the bc plane.