Database of Zeolite Structures
 

Framework Type GIS
Type Material
  Material Name: Gismondine    
 
Chemical Formula:
 
|Ca2+4 (H2O)16| [Al8Si8 O32]-GIS
 
   
Unit Cell:
 
monoclinic

 P 1 1 21/a (# 14)
    a = 9.8430Å b = 10.0230Å c = 10.6160Å  
    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]