[script p]-3m1 -3m1 Trigonal
No. 51 [script p]-32/m1 Patterson symmetry [script p]-3m1
SECOND SETTING

symmetry group diagram

Origin at centre (-3m1)

Asymmetric unit 0 ≤ x; 0 ≤ y; 0 ≤ z ≤ 1; y ≤ x/2

Symmetry operations

(1)  1   (2)  3+   0, 0, z(3)  3-   0, 0, z
(4)  2   xx, 0(5)  2   x, 0, 0(6)  2   0, y, 0
(7)  -1   0, 0, 0(8)  -3+   0, 0, z; 0, 0, 0(9)  -3-   0, 0, z; 0, 0, 0
(10)  m   x-xz(11)  m   x, 2xz(12)  m   2xxz

Generators selected (1); t(0, 0, 1); (2); (4); (7)

Positions

Multiplicity, Wyckoff letter,
Site symmetry
Coordinates Reflection conditions

 General:
12 g 1
(1) xyz(2) -yx - yz(3) -x + y-xz
(4) yx-z(5) x - y-y-z(6) -x-x + y-z
(7) -x-y-z(8) y-x + y-z(9) x - yx-z
(10) -y-xz(11) -x + yyz(12) xx - yz
no conditions
  Special: no extra conditions
6 f  . m . 
x-xzx, 2xz-(2x), -xz-xx-z2xx-z-x, -(2x), -z
6 e  . 2 . 
x, 0, 1/20, x1/2-x-x1/2-x, 0, 1/20, -x1/2xx1/2
6 d  . 2 . 
x, 0, 00, x, 0-x-x, 0-x, 0, 00, -x, 0xx, 0
2 c  3 m . 
0, 0, z0, 0, -z
1 b  -3 m . 
0, 0, 1/2
1 a  -3 m . 
0, 0, 0

Symmetry of special projections

Along [001]   6mm

Origin at 0, 0, z
Along [100]   [script p]211
a' = c   
Origin at x, 0, 0
Along [210]   [script p]2mm
a' = c   
Origin at x1/2x, 0

Maximal non-isotypic non-enantiomorphic subgroups


I[2] [script p]3m1 (49)1; 2; 3; 10; 11; 12
 [2] [script p]321 ([script p]312, 46)1; 2; 3; 4; 5; 6
 [2] [script p]-311 ([script p]-3, 45)1; 2; 3; 7; 8; 9
 [3] [script p]12/m1 ([script p]2/m11, 6)1; 4; 7; 10
 [3] [script p]12/m1 ([script p]2/m11, 6)1; 5; 7; 11
 [3] [script p]12/m1 ([script p]2/m11, 6)1; 6; 7; 12
IIa none
IIb[2] [script p]-3c1 (c' = 2c) ([script p]-31c, 52)

Maximal isotypic subgroups and enantiomorphic subgroups of lowest index


IIc[2] [script p]-3m1 (c' = 2c) ([script p]-31m, 51)

Minimal non-isotypic non-enantiomorphic supergroups


I[2] [script p]6/mmm (73); [2] [script p]63/mmc (75)
IInone








































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