s-net: sqc1543


 
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 15
Transitivity (vertex,edge)(3,5)
Vertex degrees {3,4,4}
Vertex coordination sequence [(3, 8, 20, 34, 52, 76, 100, 134, 173, 204), (4, 8, 14, 28, 48, 70, 98, 126, 158, 200), (4, 9, 18, 34, 52, 74, 103, 133, 166, 207)]
Wells’ vertex symbol [8^3, 4^4.6^2, 4^2.6.8^2.10]
Systre key (3, 1, 2, 0, 0, 0, 1, 2, 1, 0, 0, 1, 3, 0, 0, 0, 1, 4, 0, 0, 0, 2, 3, 0, 1, 0, 2, 5, 0, 0, 0, 3, 6, 0, 0, 0, 4, 5, 0, 0, 0, 4, 5, 1, 0, 0, 4, 7, 0, 0, 0, 5, 8, 0, 0, 0, 6, 7, -1, -1, 1, 6, 8, 0, 0, 1, 7, 8, 0, 0, 0, 7, 8, 1, 0, 0)

Geometric data

Systre equilibrium placement (barycentric embedding) maximising unit cell volume

Spacegroup: Fmmm

Parameters:

a b c alpha beta gamma
7.9267 1.86905 5.01424 90.0 90.0 90.0

Vertex positions:

X-pos Y-pos Z-pos
0.41667 0 0
0.25 0 0.25
0.16667 0 0.29167

Edge end points:

Systre coordinates favouring equal edge-lengths

Spacegroup: Fmmm

Parameters:

a b c alpha beta gamma
7.6871 1.99831 3.72598 90.0 90.0 90.0

Vertex positions:

X-pos Y-pos Z-pos
0.43495 0 0
0.25 0 0.25
0.11995 0 0.25669

Edge end points:

Hyperbolic sources

h-nets with faithful topology

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h-nets with edge collapse