Database of Zeolite Structures
 
 
Framework Type ETR
Framework
Cell Parameters: hexagonal P 63 m c (# 186)  
    a = 20.6342 Å b = 20.6342 Å c = 8.4261Å  
  α = 90.000° β = 90.000° γ = 120.000°  
Volume = 3107.0Å3  
RDLS = 0.0028  
  Framework density (FDSi): 15.4 T/1000 Å3  
  Topological density: TD10 = 675 TD = 0.5767  
Ring sizes (# T-atoms): 18  8  6  4    
Channel system: 3-dimensional  
  Maximum diameter of a sphere:  
  that can be included 10.05 Å  
that can diffuse along a:   2.85 Å b:   2.85 Å c:   9.33 Å  
Accessible volume: 18.97   %  
Secondary Building Units: 4          
Composite Building Units:
Natural Tiling t-etr-1 t-etr-2
Framework images
(click on icon for larger image)

Viewed along [001]

projection along [001]
12-ring channel viewed normal to [001]
large cages viewed normal to [001]

 


Year code assigned 2004
Data last updated May 14, 2014