Reorientational motions of NH/sub 2/ groups in potassium amide

Journal Article · Thu Dec 31 23:00:00 EST 1981 · AIP Conf. Proc.; (United States)

DOI:https://doi.org/10.1063/1.33682· OSTI ID:6488238

Tielemans, L; Wegener, W; Dianoux, A; Vorderwisch, P; Van Gerven, L

Rotational motions of NH/sub 2/ groups have been observed in the three known solid phases of KNH/sub 2/ by means of quasielastic neutron scattering. The observed intensities of the elastic and quasielastic neutron components can be accounted for by various reorientational jump models between equivalent equilibrium orientations of the NH/sub 2/ ion: 180/sup 0/ jumps about the molecular axis (monoclinic phase); 90/sup 0/ jumps about the fourfold crystal axis (tetragonal phase); most probably 120/sup 0/ jumps about the threefold axes (cubic phase). In some cases preliminary values of residence time have been obtained from lineshape fits.

• Research Organization: S.C.K./C.E.N., Mol, Belgium
• OSTI ID: 6488238
• Journal Information: AIP Conf. Proc.; (United States), Journal Name: AIP Conf. Proc.; (United States) Vol. 89; ISSN APCPC
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ALKALI METAL COMPOUNDS
AMIDES
AMMONIA
BOND ANGLE
BOND LENGTHS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DATA
DIFFRACTION
DIMENSIONS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
HYDRIDES
HYDROGEN COMPOUNDS
INELASTIC SCATTERING
INFORMATION
LENGTH
MOLECULAR STRUCTURE
MOMENTUM TRANSFER
MONOCLINIC LATTICES
NEUTRON DIFFRACTION
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POTASSIUM COMPOUNDS
ROTATIONAL STATES
SCATTERING
STRUCTURE FACTORS
TETRAGONAL LATTICES
VIBRATIONAL STATES