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Result of symbol lookup:
Space group number: 70
Schoenflies symbol: D2h^24
Hermann-Mauguin symbol: F d d d
Origin choice: 2
Hall symbol: -F 2uv 2vw
Input space group symbol: F d d d :2
Convention: Default
Number of lattice translations: 4
Space group is centric.
Number of representative symmetry operations: 4
Total number of symmetry operations: 32
Parallelepiped containing an asymmetric unit:
0<=x<=1/8; 1/8<=y<=3/8; 0<=z<1
List of symmetry operations:
Matrix
| Rotation-part type
| Axis direction
| Screw/glide component
| Origin shift
|
x,y,z
| 1 | - | - | -
|
-x+1/4,-y+1/4,z
| 2 | [0,0,1] | 0,0,0 | 1/8,1/8,0
|
x,-y+1/4,-z+1/4
| 2 | [1,0,0] | 0,0,0 | 0,1/8,1/8
|
-x+1/4,y,-z+1/4
| 2 | [0,1,0] | 0,0,0 | 1/8,0,1/8
|
-x,-y,-z
| -1 | - | - | 0,0,0
|
x-1/4,y-1/4,-z
| -2 | [0,0,1] | -1/4,-1/4,0 | 0,0,0
|
-x,y-1/4,z-1/4
| -2 | [1,0,0] | 0,-1/4,-1/4 | 0,0,0
|
x-1/4,-y,z-1/4
| -2 | [0,1,0] | -1/4,0,-1/4 | 0,0,0
|
x,y+1/2,z+1/2
| 1 | - | - | -
|
-x+1/4,-y+3/4,z+1/2
| 2 | [0,0,1] | 0,0,1/2 | 1/8,3/8,0
|
x,-y+3/4,-z+3/4
| 2 | [1,0,0] | 0,0,0 | 0,3/8,3/8
|
-x+1/4,y+1/2,-z+3/4
| 2 | [0,1,0] | 0,1/2,0 | 1/8,0,3/8
|
-x,-y+1/2,-z+1/2
| -1 | - | - | 0,1/4,1/4
|
x-1/4,y+1/4,-z+1/2
| -2 | [0,0,1] | -1/4,1/4,0 | 0,0,1/4
|
-x,y+1/4,z+1/4
| -2 | [1,0,0] | 0,1/4,1/4 | 0,0,0
|
x-1/4,-y+1/2,z+1/4
| -2 | [0,1,0] | -1/4,0,1/4 | 0,1/4,0
|
x+1/2,y,z+1/2
| 1 | - | - | -
|
-x+3/4,-y+1/4,z+1/2
| 2 | [0,0,1] | 0,0,1/2 | 3/8,1/8,0
|
x+1/2,-y+1/4,-z+3/4
| 2 | [1,0,0] | 1/2,0,0 | 0,1/8,3/8
|
-x+3/4,y,-z+3/4
| 2 | [0,1,0] | 0,0,0 | 3/8,0,3/8
|
-x+1/2,-y,-z+1/2
| -1 | - | - | 1/4,0,1/4
|
x+1/4,y-1/4,-z+1/2
| -2 | [0,0,1] | 1/4,-1/4,0 | 0,0,1/4
|
-x+1/2,y-1/4,z+1/4
| -2 | [1,0,0] | 0,-1/4,1/4 | 1/4,0,0
|
x+1/4,-y,z+1/4
| -2 | [0,1,0] | 1/4,0,1/4 | 0,0,0
|
x+1/2,y+1/2,z
| 1 | - | - | -
|
-x+3/4,-y+3/4,z
| 2 | [0,0,1] | 0,0,0 | 3/8,3/8,0
|
x+1/2,-y+3/4,-z+1/4
| 2 | [1,0,0] | 1/2,0,0 | 0,3/8,1/8
|
-x+3/4,y+1/2,-z+1/4
| 2 | [0,1,0] | 0,1/2,0 | 3/8,0,1/8
|
-x+1/2,-y+1/2,-z
| -1 | - | - | 1/4,1/4,0
|
x+1/4,y+1/4,-z
| -2 | [0,0,1] | 1/4,1/4,0 | 0,0,0
|
-x+1/2,y+1/4,z-1/4
| -2 | [1,0,0] | 0,1/4,-1/4 | 1/4,0,0
|
x+1/4,-y+1/2,z-1/4
| -2 | [0,1,0] | 1/4,0,-1/4 | 0,1/4,0
|
List of Wyckoff positions:
Wyckoff letter
| Multiplicity
| Site symmetry point group type
| Representative special position operator
|
h | 32 | 1 | x,y,z
|
g | 16 | 2 | 1/8,1/8,z
|
f | 16 | 2 | 1/8,y,1/8
|
e | 16 | 2 | x,1/8,1/8
|
d | 16 | -1 | 1/2,1/2,1/2
|
c | 16 | -1 | 0,0,0
|
b | 8 | 222 | 1/8,1/8,-3/8
|
a | 8 | 222 | 1/8,1/8,1/8
|
Harker planes:
Algebraic
| Normal vector
| A point in the plane
|
2*x+1/4,2*y+1/4,0 | [0,0,1] | 1/4,1/4,0
|
0,2*y+1/4,2*z+1/4 | [1,0,0] | 0,1/4,1/4
|
2*x+1/4,0,2*z+1/4 | [0,1,0] | 1/4,0,1/4
|
Additional generators of Euclidean normalizer:
Number of structure-seminvariant vectors and moduli: 1
Vector Modulus
(1, 0, 0) 2
Grid factors implied by symmetries:
Space group: (4, 4, 4)
Structure-seminvariant vectors and moduli: (2, 1, 1)
Euclidean normalizer: (4, 4, 4)
All points of a grid over the unit cell are mapped
exactly onto other grid points only if the factors
shown above are factors of the grid.
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