s-net: sqc3055
 |
|
| Systre crystallographic geometry file (.cgd) |
Other names
| RCSR name | etf |
| Keywords | sphere packing |
| Fisher-Koch-Sowa symbol | 3/8/h3 |
Links to this net in other databases
| RCSR | topcryst |
Topological data
| Vertices per primitive translational unit | 12 |
| Edges per primitive translational unit | 18 |
| Transitivity (vertex,edge) | (1,3) |
| Vertex degrees | {3} |
| Vertex coordination sequence | [(3, 6, 12, 20, 30, 46, 68, 98, 123, 148)] |
| Wells’ vertex symbol | [8^3] |
| 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, 6, 1, 0, 0, 3, 7, 0, 0, 0, 4, 5, 0, 1, 0, 4, 8, 0, 0, 0, 5, 9, 0, 0, 0, 6, 10, 0, 0, 0, 7, 10, 0, 0, 1, 7, 11, 0, 0, 0, 8, 9, -1, 1, 0, 8, 11, -1, 0, 0, 9, 12, 0, 0, 0, 10, 12, -1, 0, 0, 11, 12, 0, 0, 1) |
Geometric data
Systre equilibrium placement (barycentric embedding) maximising unit cell volume
Spacegroup: R-3c
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 6.76552 | 6.76552 | 2.80063 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0.35556 | 0.11111 | 0.05556 |
Edge end points:
Systre coordinates favouring equal edge-lengths
Spacegroup: R-3c
Parameters:
| a | b | c | alpha | beta | gamma |
|---|---|---|---|---|---|
| 6.33857 | 6.33857 | 2.98969 | 90.0 | 90.0 | 120.0 |
Vertex positions:
| X-pos | Y-pos | Z-pos |
|---|---|---|
| 0.35948 | 0.11716 | 0.07687 |
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} |