Geometrical properties of MDO polytypes and procedures for their derivation. II. OD families containing OD layers ofM> 1 kinds and their MDO polytypes

Abstract

The condition for MDO polytypes formulated in paper I [Dornberger-Schiff (1982). Acta Cryst. A38, 483- 491] is applied to OD structures containing OD layers of M > 1 kinds. Methods for ascertaining whether a certain polytype is an MDO polytype or not, and for deducing a complete list of MDO polytypes for any family of polytypes are given. These are applied to YCl(OH)2 and some MeX2 polytype families.