Database of Zeolite Structures
 

Framework Type PUN
Reference Material
  Material Name: PKU-9    
 
Chemical Formula:		  
|(ETMA+)8| [Ge28Al8O72]-PUN
ETMA+ = C5H14N+ = ethyltrimethylammonium ion
= ethyl(trimethyl)azanium
SMILES: CC[N+](C)(C)C   Images:  stick or 3D		  
   
Unit Cell: 		 
orthorhombic
 P b c n (# 60)
    a' = 15.5780 Å b' = 9.1704 Å c' = 19.9930 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
   
Framework Density: 		 
12.6 T/1000 Å3
 
  
Channels: 		 
[100] 10 4.7 x 7.0* <-> [010] 10 4.4 x 6.1* <-> [001] 8 4.5 x 5.6*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  Su, J., Wang, Y., Wang, Z. and Lin, J.
  "PKU-9: an aluminogermanate with a new three-dimensional zeolite framework constructed from CGS layers and spiro-5 units"
J. Am. Chem. Soc., 131, 6080-6081 (2009)
 
  
Name and Code derivation:
    Peking University - nine
  PKU-9 (nine)
  PUN
Limiting Rings
 
10-ring viewed along [100]

10-ring viewed along [010]

8-ring viewed along [001]

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