s-net: sqc3950
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| Systre crystallographic geometry file (.cgd) |
Links to this net in other databases
| topcryst |
Topological data
| Vertices per primitive translational unit | 7 |
| Edges per primitive translational unit | 21 |
| Transitivity (vertex,edge) | (2,3) |
| Vertex degrees | {18,4} |
| Vertex coordination sequence | [(18, 90, 216, 390, 636, 902, 1278, 1626, 2142, 2562), (4, 33, 144, 314, 530, 818, 1126, 1544, 1934, 2492)] |
| Wells’ vertex symbol | [3^12.4^24.5^45.6^42.7^12.8^18, 3^2.4^3.5] |
| Systre key | (3, 1, 2, 0, 0, 0, 1, 2, 1, 0, 0, 1, 3, 0, 0, 0, 1, 4, 0, 0, 0, 2, 2, 0, -1, -1, 2, 2, 0, -1, 0, 2, 2, 0, 0, -1, 2, 3, -1, 0, 0, 2, 3, 0, 1, 0, 2, 4, -1, 0, 1, 2, 4, 0, 0, 0, 2, 5, 0, 0, 0, 2, 5, 1, 0, -1, 2, 6, 0, 0, 0, 2, 6, 1, 0, 0, 2, 7, 0, 0, 0, 2, 7, 1, 1, 0, 3, 5, 1, -1, -1, 4, 7, 1, 0, -1, 5, 6, 0, 0, 0, 6, 7, 0, 1, 0) |
Geometric data
Systre equilibrium placement (barycentric embedding) maximising unit cell volume
Spacegroup: R-3m
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 1.78253 | 1.78253 | 4.88019 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0 | 0 | 0 |
| 0.33333 | 0 | 0.16667 |
Edge end points:
Systre coordinates favouring equal edge-lengths
Spacegroup: R-3m
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 1.41672 | 1.41672 | 4.76254 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0 | 0 | 0 |
| 0 | 0.33336 | 0.5 |
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 |
|---|---|---|---|---|---|
 |
hqc447 | *2626 | (2,3,3) | {4,18} | {6.4.4.4}{4.4.4.4.4.4.4.4.4.4.4.... |