Av. Belushkin et al., NEUTRON POWDER DIFFRACTION STUDIES OF SOME SUPERPROTONIC AND MIXED-CRYSTALS WITH DISORDERED HYDROGEN-BONDS, Journal of molecular structure, 374, 1996, pp. 161-169
Neutron diffraction is well known as an effective tool for studying pr
oton location in a crystal lattice. During the last decade, the develo
pment of high-resolution powder diffractometers has provided an altern
ative method to single-crystal neutron diffraction in order to obtain
this detailed structural information. The powder technique is rapid an
d appropriate, particularly in cases where obtaining single crystals i
s technically difficult. In this paper, several examples of the study
of crystals with disordered hydrogen bonds are presented using the Hig
h-Resolution Powder Diffractometer, at the ISIS pulsed neutron source.
These include a detailed description of the hydrogen bonding and phas
e transition behaviour in CsHSO4 and in Cs3D(SeO4)(2) and recent struc
tural investigations on the mixed crystal K-1-x(ND4)(x)D2PO4.