title: Hexane-1,6-diaminium chloride [hydrogen bis(chloroacetate)].
abstract: In the structure of the title compound, C(6)H(18)N(2)(2+).H(C(2)H(2)ClO(2))(2)(-).Cl(-), the hexane-1,6-diaminium dication is disordered over two sets of positions, with almost equal occupancies. Both alternative positions of the dication are in the fully extended conformation, situated on an inversion centre at (3/4, 1/4, 1/2). Two chloroacetic acid moieties, related by another centre of symmetry at (1/2, 1/2, 1/2), are connected by a very short symmetrical O...H...O hydrogen bond [O...O = 2.452 (2) A], with the H atom at the centre of inversion. These two fragments thus effectively form the hydrogen bis(chloroacetate) monoanion, and the overall charge is balanced by an additional chloride anion which resides on a twofold axis. The ions form a layer structure, with alternating layers of dications and anions running along the [101] direction, linked via hydrogen bonds. There are two N-H...O interactions and two N-H...Cl(-) interactions.
authors.affiliation: Department of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland. agapaul@amu.edu.pl
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Paul
authors.forename: Maciej
authors.initials: M
authors.lastname: Kubicki