title: 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).
authors.forename: Gerard A
authors.initials: GA
authors.lastname: van Albada
authors.forename: Mohamed
authors.initials: M
authors.lastname: Ghazzali
authors.forename: Khalid
authors.initials: K
authors.lastname: Al-Farhan
authors.forename: Jan
authors.initials: J
authors.lastname: Reedijk