International Tables for Crystallography

Guide to the subgroup tables and graphs
Hans Wondratschek and Mois I. Aroyo. International Tables for Crystallography (2011). Vol. A1, ch. 2.1, pp. 72-96  [ doi:10.1107/97809553602060000797 ]


This chapter is the users' guide to the subgroup tables and graphs of Part 2 of this volume. Sections 2.1.1 and 2.1.2 refer to the contents, arrangement and structure of the subgroup tables of Chapters 2.2 and 2.3 . In the next three sections, the data listed for the maximal translationengleiche subgroups (Section 2.1.3), maximal klassengleiche subgroups (Section 2.1.4) and for the series of the (infinitely many) maximal isomorphic subgroups (Section 2.1.5) are described in detail with many examples. Section 2.1.6 describes the data listed for minimal supergroups. In Section 2.1.7 the procedures for the derivation of the data for minimal supergroups from the (complete) data for maximal subgroups are developed. Such procedures exist for the minimal supergroups of all space groups with the exception of minimal t-supergroups of triclinic and monoclinic space groups. The last section, Section 2.1.8, familiarizes the user with the subgroup graphs of the space groups listed in Chapters 2.4 and 2.5 . The chapter is supplemented by the subgroup table of the space group R3 , which is printed inside the front cover of the volume with some explanatory text.

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About International Tables for Crystallography

International Tables for Crystallography is the definitive resource and reference work for crystallography. The series consists of eight volumes and comprises articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the structure and properties of materials.