s-net: sqc3917


  
Barycentric geometry maximising unit cell volume
 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 21
Transitivity (vertex,edge)(3,3)
Vertex degrees {18,3,6}
Vertex coordination sequence [(18, 84, 214, 408, 666, 988, 1374, 1824, 2338, 2916), (3, 34, 125, 289, 516, 806, 1160, 1578, 2060, 2606), (6, 6, 74, 228, 438, 712, 1050, 1452, 1918, 2448)]
Wells’ vertex symbol [3^12.4^24.5^48.6^45.7^12.8^12, 3.4^2, 4^6.5^6.6^3]
Systre key (3, 1, 1, -1, 0, 0, 1, 1, 0, -1, 0, 1, 1, 0, 0, -1, 1, 2, -1, 0, 0, 1, 2, 0, 0, 0, 1, 3, -1, 0, 0, 1, 3, 0, 0, 0, 1, 4, 0, -1, 0, 1, 4, 0, 0, 0, 1, 5, 0, 0, -1, 1, 5, 0, 0, 0, 1, 6, 0, 0, -1, 1, 6, 0, 0, 0, 1, 7, 0, -1, 0, 1, 7, 0, 0, 0, 2, 8, 0, 0, 0, 3, 8, 0, -1, -1, 4, 8, 0, 0, 0, 5, 8, 0, -1, 0, 6, 8, -1, 0, 0, 7, 8, -1, 0, -1)

Geometric data

Systre equilibrium placement (barycentric embedding) maximising unit cell volume

Spacegroup: R-3m

Parameters:

a b c alpha beta gamma
2.26018 2.26018 3.39027 90.0 90.0 120.0

Vertex positions:

X-pos Y-pos Z-pos
0 0 0
0 0.33333 0.16667
0 0 0.5

Edge end points:

Systre coordinates favouring equal edge-lengths

Spacegroup: R-3m

Parameters:

a b c alpha beta gamma
1.7251 1.7251 2.81305 90.0 90.0 120.0

Vertex positions:

X-pos Y-pos Z-pos
0 0 0
0 0.2772 0.5
0 0 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
Net details hqc501 *2626 (3,3,2) {18,3,6} {3.8.3.3.8.3.3.8.3.3.8.3.3.8.3.3...

h-nets with edge collapse

No items to display.