Database of Zeolite Structures
 
 
Framework Type USI
Framework
Cell parameters: monoclinic C 1 2/m 1 (# 12)
    a = 21.1195 Å b = 12.9714 Å c = 9.6722 Å  
  α = 90.000° β = 108.370° γ = 90.000°  
Volume = 2514.7 Å3  
RDLS = 0.0035  
  Framework density (FDSi): 15.9 T/1000 Å3  
  Topological density: TD10 = 691 TD = 0.590377  
Essential rings: [121·101·66·45]  
Channel dimensionality: Topological (pore opening > 6-ring): 2-dimensional  
  Maximum diameter of a sphere:  
  that can be included 6.76 Å  
that can diffuse along a:   1.73 Å b:   4.04 Å c:   6.28 Å  
Accessible volume: 17.47   %  
Secondary Building Units: 4-1          
Composite Building Units:

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  Chains: dzc
Natural Tiling t-ftt t-kah t-lov t-usi-1 t-usi-2
Framework images
(click on icon for larger image)

Viewed along [001]

projection along [001]
framework viewed along [010]
projection along [010]
12-ring channel viewed normal to [001]
10-ring channel viewed normal to [010]

 


Year code assigned 2004
Data last updated Jul 1, 2007