International
Tables for Crystallography Volume E Subperiodic groups Edited by V. Kopský and D. B. Litvin © International Union of Crystallography 2006 |
International Tables for Crystallography (2006). Vol. E. ch. 1.2, pp. 19-20
Section 1.2.15.1.1. Blocks I and IIa
a
Department of Physics, University of the South Pacific, Suva, Fiji, and Institute of Physics, The Academy of Sciences of the Czech Republic, Na Slovance 2, PO Box 24, 180 40 Prague 8, Czech Republic, and bDepartment of Physics, Penn State Berks Campus, The Pennsylvania State University, PO Box 7009, Reading, PA 19610-6009, USA |
In blocks I and IIa, every maximal subgroup S of a subperiodic group G is listed with the following information:The symbols have the following meaning:
Examples
The HMS1 symbol in each of the three subgroups S is given in the tetragonal coordinate system of the group G. In the first case, is not the conventional short Hermann–Mauguin symbol and a second conventional symbol is given. In the latter two cases, since the subgroups are orthorhombic rod groups, a second conventional symbol of the subgroup in an orthorhombic coordinate system is given.