Open AccessU 4 O 9 : atoms in general sites giving the hkl extinctions of special sites
Author(s) -
Popa N. C.,
Willis B. T. M.
Publication year - 2004
Publication title -
acta crystallographica section a
Language(s) - English
Resource type - Journals
eISSN - 1600-5724
pISSN - 0108-7673
DOI - 10.1107/s0108767304012188
Subject(s) - extinction (optical mineralogy) , space (punctuation) , group (periodic table) , physics , crystallography , chemistry , quantum mechanics , optics , computer science , operating system
In U 4 O 9 , most of the atoms are in general 48‐fold [48( e )] sites of the space group I 3 d and yet the hkl reflections obey the extinction rules for atoms occupying special 12‐fold [12( b )] sites. An explanation is given for this effect, which can be generalized to any space group.