Database of Disordered Zeolite Structures
 
Intergrowth Family ERI-LEV
Periodic Building Unit
 
  Periodic Building Unit (PerBU): ABC-6 layer of hexagonally arranged (isolated) 6-rings  
 
  Layer symmetry P (6) m m  
 
 
  References

    Xie, D.
   "Rational Design and Targeted Synthesis of Small-Pore Zeolites with the Assistance of Molecular Modeling, Structural Analysis, and Synthetic Chemistry"
  Ind. Eng. Chem. Res., 60, 15403−15415 (2021)
DOI: 10.1021/acs.iecr.1c02878

Connectivity pattern
Examples
The layers are stacked along the [001] direction using the following connectivity patterns

 
Symmetry
Operation*
Translation* Comment Image
  Overview showing the A, B and C positions of the ABC-6 layer
0
  A layer
1/3a, 2/3b
  B layer
2/3a, 1/3b
  C layer
 

* relative to the first layer


Effect on channel system
  The disorder blocks the 8-ring channel of ERI along [001].
Simplest ordered end members
The color of each layer reflects the translation used to generate it from the first layer (see table above).

 
  ERI
 
Cell Parameters: hexagonal P 63/m m c (# 194)
    a = 13.0540 Å b = 13.0540 Å c = 15.1750 Å  
  α = 90.0000° β = 90.0000° γ = 120.0000°  
Ring sizes (# T-atoms): 8 6 4  
Channel dimensionality: Topological (pore opening > 6-ring): 3-dimensional  
Channel system: [001] 8 3.6 x 5.1***  
 
ABC-6 stacking sequence:  AABAAC
In this space group and setting, the PerBUs are stacked along [001]


Note: This polymorph corresponds to the ordered framework ERI
 
 
  LEV
 
Cell Parameters: trigonal R -3 m:H (# )
    a = 13.1680 Å b = 13.1680 Å c = 22.5780 Å  
  α = 90.0000° β = 90.0000° γ = 120.0000°  
Ring sizes (# T-atoms): 8 6 4  
Channel dimensionality: Topological (pore opening > 6-ring): 2-dimensional  
Channel system: [001] 8 3.6 x 4.8**  
 
ABC-6 stacking sequence: AABCCABBC
In this space group and setting, the PerBUs are stacked along [001]


Note: This polymorph corresponds to the ordered framework LEV