s-net: sqc3916


 
Systre crystallographic geometry file (.cgd)

Links to this net in other databases

topcryst

Topological data

Vertices per primitive translational unit 5
Edges per primitive translational unit 21
Transitivity (vertex,edge)(3,4)
Vertex degrees {18,12,4}
Vertex coordination sequence [(18, 80, 200, 372, 602, 884, 1224, 1616, 2066, 2568), (12, 62, 180, 350, 572, 852, 1184, 1574, 2016, 2516), (4, 36, 116, 266, 464, 718, 1026, 1390, 1808, 2282)]
Wells’ vertex symbol [3^24.4^60.5^42.6^27, 3^18.4^30.5^18, 3^4.4^2]
Systre key (3, 1, 1, -1, 0, -1, 1, 1, 0, -1, -1, 1, 1, 0, 0, -1, 1, 2, -1, -1, -1, 1, 2, -1, 0, -1, 1, 2, -1, 0, 0, 1, 2, 0, -1, -1, 1, 2, 0, -1, 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, -1, 1, 0, 1, 5, 0, 0, 0, 2, 3, 0, 0, 0, 2, 3, 0, 1, 1, 2, 4, 0, 0, 0, 2, 4, 1, 0, 1, 2, 5, 0, 1, 0, 2, 5, 0, 1, 1)

Geometric data

Systre equilibrium placement (barycentric embedding) maximising unit cell volume

Spacegroup: R-3m

Parameters:

a b c alpha beta gamma
1.72631 1.72631 3.34289 90.0 90.0 120.0

Vertex positions:

X-pos Y-pos Z-pos
0 0 0
0 0 0.5
0 0.5 0

Edge end points:

Systre coordinates favouring equal edge-lengths

Spacegroup: R-3m

Parameters:

a b c alpha beta gamma
2.03586 2.03586 1.51835 90.0 90.0 120.0

Vertex positions:

X-pos Y-pos Z-pos
0 0 0
0 0 0.5
0 0.5 0

Edge end points:

Hyperbolic sources

h-nets with faithful topology

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h-nets with edge collapse