Database of Zeolite Structures
 
 
Framework Type MWW
Framework
Cell Parameters: hexagonal P 6/m m m (# 191)  
    a = 14.3900 Å b = 14.3900 Å c = 25.1980Å  
  α = 90.000° β = 90.000° γ = 120.000°  
Volume = 4518.8Å3  
RDLS = 0.0046  
  Framework density (FDSi): 15.9 T/1000 Å3  
  Topological density: TD10 = 851 TD = 0.752127  
Ring sizes (# T-atoms): 10  6  5  4    
Channel system: 2-dimensional  
  Maximum diameter of a sphere:  
  that can be included 9.69 Å  
that can diffuse along a:   4.92 Å b:   4.92 Å c:   2.6 Å  
Accessible volume: 17.43   %  
Secondary Building Units: 1-6-1 AND 6-1 (1:4)          
Composite Building Units:
d6r (t-hpr )
mel
Natural Tiling t-dac-1 t-euo t-hpr t-kah t-kzd t-mel t-mww-1 t-mww-2
t-srs
Framework images
(click on icon for larger image)

Viewed normal to [001]

Projection along [001]
Projection along [100]
Large cage (pockets)
Chain of small cages
2D 10ring channel system (between "layer ") with pockets
2D 10ring channel system (in "layer")
Small "cage" with T04 unit inside
10ring of channel "between layer"
10ring of channel "in layer"

 


Year code assigned 1997
Data last updated Jul 1, 2007