Database of Zeolite Structures
 
 
Framework Type MEI
Framework
Cell Parameters: hexagonal P 63/m (# 176)  
    a = 13.1140 Å b = 13.1140 Å c = 15.5630Å  
  α = 90.000° β = 90.000° γ = 120.000°  
Volume = 2317.9Å3  
RDLS = 0.0026  
  Framework density (FDSi): 14.7 T/1000 Å3  
  Topological density: TD10 = 728 TD = 0.630682  
Ring sizes (# T-atoms): 12  7  5  4  3    
Channel dimensionality: Topological (pore opening > 6-ring): 3-dimensional  
  Maximum diameter of a sphere:  
  that can be included 8.06 Å  
that can diffuse along a:   2.99 Å b:   2.99 Å c:   6.9 Å  
Accessible volume: 21.11   %  
Secondary Building Units: 6*1 AND 3 (2:1)          
Composite Building Units:
mei
Natural Tiling t-meg t-mei
Framework images
(click on icon for larger image)

Viewed along [001]

projection viewed along [001]
viewed along a
projection viewed along a
12-ring channel along c

 


Year code assigned 1992
Data last updated Jul 1, 2007