2-Chloro-pyrimidin-4-amine

Abstract

In the title pyrimidine derivative, C(4)H(4)ClN(3), 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).

Fig. 1.

Atomic numbering scheme and thermal ellipsoidal (50% probability level) of the title compound. Hydrogen atoms are presented as spheres of arbitrary radii.

Fig. 2.

bc-plane projection showing the N—H···N hydrogen bonds as dotted line of R22(8) loop (presented in blue color), and C(5) chain (presented in red color). Symmetry codes: (i) -x, -y + 1, -z + 1; (ii) x, -y + 1/2, z + 1/2.