CHA
Framework Type CHA
Framework
Space Group:R-3m
Cell Parameters:
a = 13.675 Åb = 13.675 Åc = 14.767 Å
α = 90.000°β = 90.000°γ = 120.000°
Volume = 2391.59 Å3
RDLS = 0.0015
Framework density (FDSi): 15.1 T/1000 Å3
Topological density:TD10 = 677TD = 0.566667
Ring sizes (# T-atoms): 8   6   4               
Channel system: 3-dimensional
Maximum diameter of a sphere:
that can be included7.37 Å
that can diffuse alonga:   3.72 Åb:   3.72 Åc:   3.72 Å
Accessible volume: 17  %  (additional data)
ABC sequence AABBCC sequence of 6-rings
Secondary Building Units:6-6 or 6 or 4-2 or 4   
Composite Building Units:
d6R
cha
Coordinates:List (T-atoms), CIF (T and O atoms)
Coordination sequences:
    + Vertex symbols
    + Loop configurations
List
Natural tilingpdf file
Click on any of the images below
to get a larger version

Viewed along [010]


Year code assigned1978
Data last updated (M/D/Y)07/01/2007

Copyright © 2008 Structure Commission of the International Zeolite Association (IZA-SC)