Hexamethylenediammonium bis(chloroacetate): a three-dimensional hydrogen-bonded framework structure.

In the title compound, C(6)H(18)N(2)(2+).2C(2)H(2)ClO(2)(-), the cation lies across an inversion centre in the P\overline{1} space group. The ions are linked by two two-centre N-H...O hydrogen bonds and by one three-centre N-H...(O)(2) hydrogen bond to form a three-dimensional framework structure. The significance of this study lies in the analysis of the complex hydrogen-bonded structure and in the comparison of this structure with those of other simple hexamethylenediammonium salts.