Premium
Neutronenbeugung an der Tieftemperaturmodifikation von Rubidiumdeuteroamid
Author(s) -
Bohger P.,
Zeiske Th.,
Jacobs H.
Publication year - 1998
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/(sici)1521-3749(199803)624:3<364::aid-zaac364>3.0.co;2-2
Subject(s) - neutron diffraction , rubidium , monoclinic crystal system , crystallography , crystallite , rietveld refinement , deuterium , amide , chemistry , powder diffraction , ion , diffraction , materials science , crystal structure , physics , potassium , atomic physics , optics , organic chemistry
Neutron Diffraction of the Low Temperature Modification of Rubidium Deutero Amide A polycrystalline sample of RbND 2 was prepared by reaction of liquid ND 3 and Rb (320 K, 4 d). Rietveld refinement of neutron powder diffraction data collected on the E2 (HMI‐BENSC, Berlin) yielded the deuterium positions and allowed the temperature factors of all atoms to be refined anisotropically: space group P2 1 /m, Z = 2, a = 4.846(1) Å, b = 4.136(1) Å, c = 6.396(2) Å, β = 98.051(7)°, N(I/σ (I) > 1) = 179, N(Var.) = 25, R P = 0.025, wR P = 0.032, R B (I/σ (I) > 1) = 0.095. In a monoclinic distorted rock salt structure the amide ions are oriented antiferroelectrically in almost planar zick‐zack chains.