On order–disorder structures (OD-structures)

Abstract

Certain features common to structures with one-dimensional position disorder and to related ordered layer structures (OD-struetures) are discussed, the corresponding concepts are introduced by examples and the corresponding features of Fourier transforms are deduced. OD-structures are systematized and a glossary of terms is added. In an Appendix a nomenclature for plane space groups in three dimensions, which corresponds to the international nomenclature for three-dimen- sional space groups, is suggested.