Database of Zeolite Structures
 
 
Framework Type BEC
Framework
Cell Parameters: tetragonal P 42/m m c (# 131)  
    a = 12.7690 Å b = 12.7690 Å c = 12.9770Å  
  α = 90.000° β = 90.000° γ = 90.000°  
Volume = 2115.9Å3  
RDLS = 0.0040  
  Framework density (FDSi): 15.1 T/1000 Å3  
  Topological density: TD10 = 764 TD = 0.656640  
Ring sizes (# T-atoms): 12  6  5  4    
Channel dimensionality: Topological (pore opening > 6-ring): 3-dimensional  
  Maximum diameter of a sphere:  
  that can be included 6.95 Å  
that can diffuse along a:   6.09 Å b:   6.09 Å c:   6.09 Å  
Accessible volume: 21.18   %  
Secondary Building Units: 6-2          
Composite Building Units:
mor (t-tes )
d4r (t-cub )
mtw (t-mtw )
Natural Tiling t-bbo t-cub t-fvw t-mtw t-tes t-umx
Framework images
(click on icon for larger image)

Viewed along [001]

projection along [001]
projection along [100]
12-ring channel along [001, viewed normal to [001]
12-ring channel along [100], viewed normal to [100]

 


Year code assigned 2001
Data last updated Jul 1, 2007