s-net: sqc328
 |
|
| Systre crystallographic geometry file (.cgd) |
Other names
| RCSR name | pcu-h |
| Keywords | sphere packing |
| Fisher-Koch-Sowa symbol | 3/6/h1 |
Links to this net in other databases
| RCSR | topcryst |
Topological data
| Vertices per primitive translational unit | 6 |
| Edges per primitive translational unit | 9 |
| Transitivity (vertex,edge) | (1,2) |
| Vertex degrees | {3} |
| Vertex coordination sequence | [(3, 6, 11, 20, 32, 46, 60, 80, 102, 122)] |
| Wells’ vertex symbol | [6.10^2] |
| Systre key | (3, 1, 2, 0, 0, 0, 1, 3, 0, 0, 0, 1, 4, 0, 0, 0, 2, 5, 0, 0, 0, 2, 6, 0, 0, 0, 3, 5, 1, 0, 0, 3, 6, 0, 1, 0, 4, 5, 1, 0, 1, 4, 6, 0, 0, 1) |
Geometric data
Systre equilibrium placement (barycentric embedding) maximising unit cell volume
Spacegroup: R-3m
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 4.27039 | 4.27039 | 3.69851 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0.11111 | 0.22222 | 0.44444 |
Edge end points:
Systre coordinates favouring equal edge-lengths
Spacegroup: R-3m
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 4.27227 | 4.27227 | 3.54928 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0.11986 | 0.23972 | 0.43494 |
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 |
|---|---|---|---|---|---|
 |
hqc17 | *23(18) | (1,1,1) | {3} | {18.18.18} |