title: 1-Ammonio-1-phosphono-pentane-1-phospho-nic acid.
abstract: The title compound, C(5)H(15)NO(6)P(2), was obtained by the reaction of penta-nenitrile with PCl(3) followed by the dropwise addition of water. The asymmetric unit contains one mol-ecule, which exists as a zwitterion with a positive charge on the -NH(3) group and a negative charge on one of the phospho-nic O atoms. The crystal structure displays N-H⋯O and O-H⋯O hydrogen bonding, which creates a three-dimensional network.
authors.affiliation: V.I. Vernadskii Institute of General and Inorganic Chemistry, Kyiv 03680, Ukraine.
authors.forename: V V
authors.initials: VV
authors.lastname: Bon
authors.forename: A V
authors.initials: AV
authors.lastname: Dudko
authors.forename: A N
authors.initials: AN
authors.lastname: Kozachkova
authors.forename: V I
authors.initials: VI
authors.lastname: Pekhnyo