Table 1.2.1.2

Kopskyacute, V.; Litvin, D. B.

doi:10.1107/97809553602060000647

International
Tables for
Crystallography
Volume E
Subperiodic groups
Edited by V. Kopský and D. B. Litvin

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International Tables for Crystallography (2006). Vol. E. ch. 1.2, p. 6 | 1 | 2 |

Table 1.2.1.2

V. Kopský^a and D. B. Litvin^b ^*

^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
Correspondence e-mail: u3c@psu.edu

Table 1.2.1.2 | top | pdf |
Classification of rod groups

Bold symbols indicate Laue groups.

Three-dimensional crystal system	Crystallographic point groups	No. of rod-group types	Restrictions on conventional coordinate system
Triclinic	1, $[{\bar{\bf 1}}]$	2	None
Monoclinic (inclined)	2, m, 2/m	5	β = γ = 90°
Monoclinic (orthogonal)	2, m, 2/m	5	α = β = 90°
Orthorhombic	222, 2mm, *mmm*	10	α = β = γ = 90°
Tetragonal	4, $[\bar{4}]$ , 4/m	19
Tetragonal	422, 4mm, $[\bar{4}]$ 2m, 4/mmm	19
Trigonal	3, $[{\bar{\bf 3}}]$	11	α = β = 90, γ = 120°
Trigonal	32, 3m, $[{\bar{\bf 3}}]$ m	11
Hexagonal	6, $[\bar{6}]$ , 6/m	23
Hexagonal	622, 6mm, $[\bar{6}]$ m2, 6/mmm	23