You are here: Home :: Area NEM :: Chemistry :: Inorganic chemistry

Slavomil Durovic, Jiri Hybler

OD structures in crystallography — basic concepts and suggestions for practice

Keywords: OD structures, Polytypism, Cronstedtite, Kermesite, Fourier syntheses

The present review deals with some selected topics pertaining to the theory of OD structures of layers founded by K. Dornberger-Schiff. An attention is paid mainly to the notion of VC (Vicinity Condition) structures and to the position of OD (Order-Disorder) structures within the VC structures. Explained is also the notion of MDO (Maximum Degree of Order) structures and indicated their derivation. The importance of a suitable axial setting for periodic OD structures is illustrated by an OD interpretation of the structure of the mineral kermesite. Based on X-ray studies of the mineral cronstedtite, the choice of suitable crystals for X-ray studies, reasons for the occurrence of ‘ghost’ peaks in Fourier maps and the refinement strategy for OD structures, is also discussed.

Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0044-2968
Volume: 221, 01/2006
Pages: 063 - 076

Show full article (external site)

Show all available items of this journal

 

Area NEM