2-Chloropyrimidin-4-amine

Abstract

In the title pyrimidine derivative, C4H4ClN3, the 2-chloro and 4-amino substituents almost lie in the mean plane of the pyrimidine ring, with deviations of 0.003 (1) Å for the Cl atom, and 0.020 (1) Å for the N atom. In the crystal, molecules are linked via pairs of N—H⋯N hydrogen bonds, forming inversion dimers. These dimers are further linked via N—H⋯N hydrogen bonds, forming an undulating two-dimensional network lying parallel to (100).

5-Bromo-2-chloropyrimidin-4-amine

“…Bond lengths and angles in the title compound (Fig. 1)are comparable with the similar crystal structures (vanAlbada et al, 2012;Yang et al, 2012). The pyrimidine ring is essentially planar (r.m.s.…”

“…For background to pyrimidine derivatives, see: Yu et al (2007). For related structures, see: van Albada et al (2012); Yang et al (2012).…”