Premium
Enantiomorph identification of crystals belonging to the point groups 321 and 312 by convergent‐beam electron diffraction
Author(s) -
Inui Haruyuki,
Fujii Akihiro,
Sakamoto Hiroki,
Fujio Satoshi,
Tanaka Katsushi
Publication year - 2007
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889806055877
Subject(s) - electron diffraction , asymmetry , point group , zone axis , diffraction , crystallography , symmetry (geometry) , intensity (physics) , optics , point (geometry) , physics , chemistry , materials science , mathematics , geometry , quantum mechanics
The recently proposed CBED (convergent‐beam electron diffraction) method for enantiomorph identification has been successfully applied to crystals belonging to the point groups 321 and 312. The intensity asymmetry of zeroth‐order Laue zone and/or first‐order Laue zone reflections of Bijvoet pairs is easily recognized in CBED patterns with the incidence along appropriate zone‐axis orientations for each member of the enantiomorphic pair. The intensity asymmetry with respect to the symmetry line is reversed upon changing the space group (handedness) from one to the other. Thus, enantiomorph identification can be easily performed in principle for all crystals belonging to the point groups 321 and 312.