s-net: sqc4140


 
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 22
Transitivity (vertex,edge)(2,7)
Vertex degrees {6,5}
Vertex coordination sequence [(6, 18, 37, 62, 95, 137, 186, 242, 305, 375), (5, 14, 32, 61, 97, 138, 186, 242, 306, 378)]
Wells’ vertex symbol [3.4^7.5^2.6^5, 3^2.4^5.5^3]
Systre key (3, 1, 1, -1, 0, 0, 1, 2, 0, 0, 0, 1, 3, 0, 0, 0, 1, 4, 0, 0, 0, 1, 5, 0, 0, 0, 2, 2, -1, 0, 0, 2, 3, 0, 1, 0, 2, 4, 0, 1, 0, 2, 6, 0, 0, 0, 3, 4, 0, 0, 0, 3, 4, 1, 0, 0, 3, 7, 0, 0, 0, 4, 8, 0, 0, 0, 5, 5, -1, 0, 0, 5, 6, 0, 0, 0, 5, 7, 0, 0, 1, 5, 8, 0, 0, 1, 6, 6, -1, 0, 0, 6, 7, 0, 1, 1, 6, 8, 0, 1, 1, 7, 8, 0, 0, 0, 7, 8, 1, 0, 0)

Geometric data

Systre equilibrium placement (barycentric embedding) maximising unit cell volume

Spacegroup: Pmmm

Parameters:

a b c alpha beta gamma
1.20902 3.42128 2.7935 90.0 90.0 90.0

Vertex positions:

X-pos Y-pos Z-pos
0 0.33333 0.25
0.16667 0.16667 0.5

Edge end points:

Systre coordinates favouring equal edge-lengths

Spacegroup: Pmmm

Parameters:

a b c alpha beta gamma
1.16906 3.40805 2.69402 90.0 90.0 90.0

Vertex positions:

X-pos Y-pos Z-pos
0 0.34296 0.19865
0.24974 0.15706 0.5

Edge end points:

Hyperbolic sources

h-nets with faithful topology

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h-nets with edge collapse