@article{KrausAschenbrennerKlamrothetal.2009,
  author    = {Florian Kraus and J{\"u}rgen C. Aschenbrenner and Tillmann Klamroth and Nikolaus Korber},
  title     = {Hydrogen polyphosphides P3H23- and P3H32- : synthesis and crystal structure of K3(P3H2)·2.3NH3, Rb3(P3H2)·NH3, [Rb(18-crown-6)]2(P3H3)·7.5NH3, and [Cs(18-crown-6)]2(P3H3)·7NH3},
  doi       = {10.1021/Ic8014546},
  url       = {http://pubs.acs.org/journal/inocaj},
  year      = {2009},
}