Definition:
A qualifier taken from the enumeration list identifying which
setting in International Tables for Crystallography Volume A
(2002) (IT) is used. See IT Table 4.3.2.1, Section 2.2.16,
Table 2.2.16.1, Section 2.2.16.1 and Fig. 2.2.6.4. This item
is not computer-interpretable and cannot be used to define the
coordinate system. Use _space_group.transform_* instead.
Ref: International Tables for Crystallography (2002). Volume A,
Space-group symmetry, edited by Th. Hahn, 5th ed.
Dordrecht: Kluwer Academic Publishers.
Type: char
Mandatory item: no
|
b1 | monoclinic unique axis b, cell choice 1, abc |
|
b2 | monoclinic unique axis b, cell choice 2, abc |
|
b3 | monoclinic unique axis b, cell choice 3, abc |
|
-b1 | monoclinic unique axis b, cell choice 1, c-ba |
|
-b2 | monoclinic unique axis b, cell choice 2, c-ba |
|
-b3 | monoclinic unique axis b, cell choice 3, c-ba |
|
c1 | monoclinic unique axis c, cell choice 1, abc |
|
c2 | monoclinic unique axis c, cell choice 2, abc |
|
c3 | monoclinic unique axis c, cell choice 3, abc |
|
-c1 | monoclinic unique axis c, cell choice 1, ba-c |
|
-c2 | monoclinic unique axis c, cell choice 2, ba-c |
|
-c3 | monoclinic unique axis c, cell choice 3, ba-c |
|
a1 | monoclinic unique axis a, cell choice 1, abc |
|
a2 | monoclinic unique axis a, cell choice 2, abc |
|
a3 | monoclinic unique axis a, cell choice 3, abc |
|
-a1 | monoclinic unique axis a, cell choice 1, -acb |
|
-a2 | monoclinic unique axis a, cell choice 2, -acb |
|
-a3 | monoclinic unique axis a, cell choice 3, -acb |
|
abc | orthorhombic |
|
ba-c | orthorhombic |
|
cab | orthorhombic |
|
-cba | orthorhombic |
|
bca | orthorhombic |
|
a-cb | orthorhombic |
|
1abc | orthorhombic origin choice 1 |
|
1ba-c | orthorhombic origin choice 1 |
|
1cab | orthorhombic origin choice 1 |
|
1-cba | orthorhombic origin choice 1 |
|
1bca | orthorhombic origin choice 1 |
|
1a-cb | orthorhombic origin choice 1 |
|
2abc | orthorhombic origin choice 2 |
|
2ba-c | orthorhombic origin choice 2 |
|
2cab | orthorhombic origin choice 2 |
|
2-cba | orthorhombic origin choice 2 |
|
2bca | orthorhombic origin choice 2 |
|
2a-cb | orthorhombic origin choice 2 |
|
1 | tetragonal or cubic origin choice 1 |
|
2 | tetragonal or cubic origin choice 2 |
|
h | trigonal using hexagonal axes |
|
r | trigonal using rhombohedral axes |
Category: space_group
Copyright © 2005 International Union of Crystallography