s-net: sqc5171


 
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 24
Transitivity (vertex,edge)(2,7)
Vertex degrees {6,6}
Vertex coordination sequence [(6, 20, 52, 97, 155, 237, 331, 431, 557, 695), (6, 21, 50, 95, 160, 238, 329, 439, 558, 691)]
Wells’ vertex symbol [3^2.4^7.5^4.6^2, 3.4^6.5^4.6^4]
Systre key (3, 1, 2, 0, 0, 0, 1, 2, 1, 0, 0, 1, 3, 0, 0, 0, 1, 4, 0, 0, 0, 1, 5, 0, 0, 0, 1, 6, 0, 0, 0, 2, 3, 0, 1, 0, 2, 4, -1, -1, 0, 2, 7, 0, 0, 0, 2, 8, 0, 0, 0, 3, 4, -1, -1, 0, 3, 4, 0, -1, 0, 3, 5, 0, 0, 1, 3, 6, 0, 0, 1, 4, 7, 1, 1, -1, 4, 8, 1, 1, -1, 5, 6, 0, 0, 0, 5, 7, 0, -1, -1, 5, 7, 1, 1, -1, 5, 8, 0, 0, -1, 6, 7, 1, 0, -1, 6, 8, 0, -1, -1, 6, 8, 1, 1, -1, 7, 8, 0, 0, 0)

Geometric data

Systre equilibrium placement (barycentric embedding) maximising unit cell volume

Spacegroup: Cmma

Parameters:

a b c alpha beta gamma
2.54281 2.54313 2.39841 90.0 90.0 90.0

Vertex positions:

X-pos Y-pos Z-pos
0.25 0.16667 0
0.33333 0.25 0.375

Edge end points:

Systre coordinates favouring equal edge-lengths

Spacegroup: Cmma

Parameters:

a b c alpha beta gamma
2.0375 0.96017 2.84585 90.0 90.0 90.0

Vertex positions:

X-pos Y-pos Z-pos
0.25 0.10736 0
0.25186 0.25 0.33556

Edge end points:

Hyperbolic sources

h-nets with faithful topology

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h-nets with edge collapse