s-net: sqc2642
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| Systre crystallographic geometry file (.cgd) |
Links to this net in other databases
| topcryst |
Topological data
| Vertices per primitive translational unit | 8 |
| Edges per primitive translational unit | 18 |
| Transitivity (vertex,edge) | (2,5) |
| Vertex degrees | {6,3} |
| Vertex coordination sequence | [(6, 20, 45, 82, 131, 190, 259, 342, 436, 538), (3, 10, 31, 66, 110, 164, 234, 314, 400, 500)] |
| Wells’ vertex symbol | [4^4.6^9.8^2, 4^2.6] |
| Systre key | (3, 1, 2, 0, 0, 0, 1, 2, 0, 1, 0, 1, 2, 1, 0, 0, 1, 3, 0, 0, 0, 1, 4, 0, 0, 0, 1, 5, 0, 0, 0, 2, 6, 0, 0, 0, 2, 7, 0, 0, 0, 2, 8, 0, 0, 0, 3, 6, 0, 1, 0, 3, 8, 0, 0, 1, 4, 6, 1, 0, -1, 4, 7, 0, 0, -1, 4, 8, 0, 0, 0, 4, 8, 1, -1, 0, 4, 8, 1, 0, 0, 5, 7, 0, 1, 0, 5, 8, 1, 0, 1) |
Geometric data
Systre equilibrium placement (barycentric embedding) maximising unit cell volume
Spacegroup: Cmma
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 3.559 | 2.05443 | 2.51534 | 90.0 | 90.0 | 90.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0.33333 | 0.25 | 0.25 |
| 0.08333 | 0 | 0 |
Edge end points:
Systre coordinates favouring equal edge-lengths
Spacegroup: Cmma
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 2.91774 | 1.77727 | 2.68026 | 90.0 | 90.0 | 90.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0.32861 | 0.25 | 0.33423 |
| 0.17134 | 0 | 0 |
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 |
|---|---|---|---|---|---|
 |
hqc990 | *22222 | (2,5,3) | {6,3} | {4.6.4.4.6.4}{6.4.4} |