Abstract
The asymmetric unit of the title compound, (C6H20N3)[BiCl6]center dot H2O, consists of a triprotonated bis(3-azaniumylpropyl) azanium cation, two halves of an octahedral [BiCl6](3-) anion, each of the Bi-III atoms lying on an inversion centre, and a water molecule. In the crystal, the anions and water molecules are linked by O-HCl hydrogen bonds, forming chains running parallel to [011]. The anionic chains and the cations are further linked into a three-dimensional network by N-H center dot center dot center dot Cl and N-H center dot center dot center dot O hydrogen-bond interactions.