Database of Zeolite Structures
 

Framework Type PHI
Type Material
  Material Name: Phillipsite    
 
Chemical Formula:
 
|K+2(Ca2+,Na+2)2 (H2O)12| [Al6Si10 O32]-PHI
 
   
Unit Cell:
 
monoclinic

 P 1 21/m 1 (# 11)
    a = 9.8650Å b = 14.3000Å c = 8.6680Å  
    α = 90.000 ° β = 124.200° γ = 90.000°  
(Relationship to unit cell of Framework Type: a' = a, b' = c, c' = b/(2sin(β'))
or, as vectors, a' = (a, b' = c, c' = (b - a)/2)
   
Framework density:
 
15.8 T/1000 Å3
 
 
Channels:
 
[100] 8 3.8 x 3.8* <-> [010] 8 3.0 x 4.3* <-> [001] 8 3.2 x 3.3*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
    Steinfink, H.
   "The crystal structure of the zeolite phillipsite"
   Acta Crystallogr., 15, 644-651 (1962)
Rinaldi, R., Pluth, J.J. and Smith, J.V.
   "Zeolites of the phillipsite family. Refinement of the crystal structure of phillipsite and harmotome"
   Acta Crystallogr., B30, 2426-2433 (1974)
 
 
Name and Code derivation:
    Phillipsite
  PHI
Limiting Rings
 
8-ring viewed along [100]

8-ring viewed along [010]

8-ring viewed along [001]