Propane-1,2-Diaminium Hydrogenarsenate

The title compound, (C3H12N2)[AsHO4], is a molecular salt containing a network of propane-1,2-diaminium cations and hydrogenarsenate anions [mean As-O 1.686 (2) angstrom]. The crystal packing involves cation-to-anion N - H center dot center dot center dot O and anion-to-anion O - H center dot center dot center dot O hydrogen bonds, the latter resulting in dimeric associations of two adjacent hydrogenarsenate anions.