Database of Zeolite Structures
 

Framework Type GIS
Reference Material
  Material Name: Gismondine    
 
Chemical Formula:		  
|Ca4 (H2O)16 | [Al8Si8O32]-GIS		  
   
Unit Cell: 		 
monoclinic
 P 1 1 21/a (# 14)
    a' = 9.8430 Å b' = 10.0230 Å c' = 10.6160 Å  
    α' = 90.000° β' = 90.000° γ' = 92.417°  
(Relationship to unit cell of Framework Type: a' = a, b' = b, c' = c)
   
Framework Density: 		 
15.3 T/1000 Å3
 
  
Channels: 		 
{[100] 8 3.1 x 4.5 <-> [010] 8 2.8 x 4.8}***
Dimensionality
  Sorption (molecular cross section > 3.4Å): 0-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  Fischer, K. and Schramm, V.
  "Crystal structure of gismondite, a detailed refinement"
Adv. Chem. Ser., 101, 250-258 (1971)
 
  
Name and Code derivation:
    Gismondine
  GIS
Limiting Rings
 
8-ring viewed along [100]

8-ring viewed along [010]


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