s-net: sqc249
 |
|
| Systre crystallographic geometry file (.cgd) |
Other names
| RCSR name | kag |
| Keywords | sphere packing |
| Fisher-Koch-Sowa symbol | 6/3/h13 |
Links to this net in other databases
| RCSR | topcryst |
Topological data
| Vertices per primitive translational unit | 3 |
| Edges per primitive translational unit | 9 |
| Transitivity (vertex,edge) | (1,2) |
| Vertex degrees | {6} |
| Vertex coordination sequence | [(6, 18, 40, 72, 112, 162, 220, 288, 364, 450)] |
| Wells’ vertex symbol | [3^2.4^8.6^5] |
| Systre key | (3, 1, 1, -1, 0, 0, 1, 2, 0, 0, 0, 1, 2, 0, 0, 1, 1, 3, 0, 0, 0, 1, 3, 0, 1, 0, 2, 2, -1, 0, 0, 2, 3, 0, 0, -1, 2, 3, 0, 1, 0, 3, 3, -1, 0, 0) |
Geometric data
Systre equilibrium placement (barycentric embedding) maximising unit cell volume
Spacegroup: P6/mmm
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 1.99982 | 1.99982 | 1.00018 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0 | 0.5 | 0 |
Edge end points:
Systre coordinates favouring equal edge-lengths
Spacegroup: P6/mmm
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 2.0 | 2.0 | 1.0 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0 | 0.5 | 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 |
|---|---|---|---|---|---|
 |
hqc37 | *2226 | (1,2,2) | {6} | {6.4.4.6.4.4} |