title: Pressure-induced hydrogen bonding: structure of D2S phase I'
abstract: The full structure of the high-pressure cubic phase I' of hydrogen sulfide has been solved using neutron diffraction data. The molecules are partially rotationally disordered about the <111> axes, as in phase II at ambient pressure but with markedly greater nonuniformity of the toroidal D distribution. The changes in structure at the II-->I' transition signal the onset of significant pressure-induced hydrogen bonding.
authors.affiliation: Department of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
authors.initials: JS
authors.lastname: Loveday
authors.initials: RJ
authors.lastname: Nelmes
authors.initials: S
authors.lastname: Klotz
authors.initials: JM
authors.lastname: Besson
authors.initials: G
authors.lastname: Hamel