s-net: sqc4091


 
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 {7,4}
Vertex coordination sequence [(7, 22, 46, 79, 122, 175, 238, 310, 391, 482), (4, 12, 34, 71, 116, 168, 230, 302, 384, 476)]
Wells’ vertex symbol [3^2.4^11.5^4.6^4, 3.4^3.6^2]
Systre key (3, 1, 1, -1, 0, 0, 1, 2, 0, 0, 0, 1, 2, 0, 1, 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, 1, 0, 0, 3, 7, 0, 0, 0, 4, 8, 0, 0, 0, 5, 5, -1, 0, 0, 5, 6, 0, 0, 0, 5, 6, 0, 1, 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, 1, 0, 0)

Geometric data

Systre equilibrium placement (barycentric embedding) maximising unit cell volume

Spacegroup: Pmmm

Parameters:

a b c alpha beta gamma
1.26297 3.45719 2.44515 90.0 90.0 90.0

Vertex positions:

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

Edge end points:

Systre coordinates favouring equal edge-lengths

Spacegroup: Pmmm

Parameters:

a b c alpha beta gamma
0.95985 2.15132 1.95846 90.0 90.0 90.0

Vertex positions:

X-pos Y-pos Z-pos
0 0.23485 0.24441
0.02939 0.26523 0

Edge end points:

Hyperbolic sources

h-nets with faithful topology

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h-nets with edge collapse