s-net: sqc3991
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| Systre crystallographic geometry file (.cgd) |
Links to this net in other databases
| topcryst |
Topological data
| Vertices per primitive translational unit | 12 |
| Edges per primitive translational unit | 21 |
| Transitivity (vertex,edge) | (2,4) |
| Vertex degrees | {4,3} |
| Vertex coordination sequence | [(4, 9, 20, 32, 52, 77, 102, 133, 175, 208), (3, 7, 16, 28, 50, 72, 102, 128, 168, 202)] |
| Wells’ vertex symbol | [3.7^3.8^2, 6.7^2] |
| Systre key | (3, 1, 2, 0, 0, 0, 1, 3, 0, 0, 0, 1, 4, 0, 0, 0, 1, 5, 0, 0, 0, 2, 3, 0, 0, 0, 2, 6, 0, 0, 0, 2, 7, 0, 0, 0, 3, 8, 0, 0, 0, 3, 9, 0, 0, 0, 4, 6, 0, 1, 0, 4, 8, 1, 0, 0, 4, 10, 0, 0, 0, 5, 11, 0, 0, 0, 5, 12, 0, 0, 0, 6, 8, 1, -1, 0, 6, 11, 0, 0, 1, 7, 10, 0, -1, -1, 7, 12, 0, -1, 0, 8, 12, 0, 0, 1, 9, 10, -1, 0, -1, 9, 11, -1, 0, 0) |
Geometric data
Systre equilibrium placement (barycentric embedding) maximising unit cell volume
Spacegroup: R-3m
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 3.47411 | 3.47411 | 8.65149 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0.18182 | 0.09091 | 0.21429 |
| 0.24242 | 0.12121 | 0.02381 |
Edge end points:
Systre coordinates favouring equal edge-lengths
Spacegroup: R-3m
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 3.41239 | 3.41239 | 8.37192 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0.19536 | 0.09768 | 0.20124 |
| 0.27718 | 0.13859 | 0.03426 |
Edge end points:
Hyperbolic sources
h-nets with faithful topology
1 record listed.| Image | h-net name | Orbifold symbol | Transitivity (Vert,Edge,Face) | Vertex Degree | 2D Vertex Symbol |
|---|---|---|---|---|---|
 |
hqc356 | *2626 | (2,4,3) | {4,3} | {12.8.8.12}{8.6.8} |