Database of Zeolite Structures
 

Framework Type BEC
Reference Material
  Material Name: FOS-5 (Beta polymorph C)    
 
Chemical Formula:
 
|(TrMA)6 (H2O)4.5|8 [Ge32O64]8-BEC
TrMA = C3H9N = trimethylamine = N,N-dimethylmethanamine
SMILES: CN(C)C   Images:  stick or 3D
 
   
Unit Cell:
 
tetragonal

 I 41/a m d (# 131)
    a' = 25.9900 Å b' = 25.9900 Å c' = 27.2710 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
(Relationship to unit cell of Framework Type: a'= 2a, c' = 2c)
   
Framework Density:
 
13.9 T/1000 Å3
 
 
Channels:
 
[001] 12 6.3 x 7.5* <-> <100> 12 6.0 x 6.9**
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  Conradsson, T., Dadachov, M.S. and Zou, X.D.
  "Synthesis and structure of (Me3N)6[Ge32O64](H2O)4.5, a thermally stable novel zeotype with 3D interconnected 12-ring channels"
Microporous Mesoporous Mat., 41, 183-191 (2000)
 
 
Name and Code derivation:
    Fysikalisk-Oorganisk- and SStruktur-kemi - five
  FOS-5 (Be(ta polymorph C)
  BEC
Limiting Rings
 
12-ring viewed along [001]

12-ring viewed along [100]