Database of Zeolite Structures

Framework Type EAB
Reference Material
  Material Name: TMA-E (Aiello and Barrer)    
Chemical Formula:
|(TMA+)2Na7 (H2O)26 | [Al9Si27O72]-EAB
TMA+ = C4H12N+ = tetramethylammonium ion
= tetramethylazanium
SMILES: C[N+](C)(C)C   Images:  stick or 3D
Unit Cell:§

 P 63/m m c (# 194)
    a' = 13.2800 Å b' = 13.2800 Å c' = 15.2100 Å  
    α' = 90.000° β' = 90.000° γ' = 120.000°  
Framework Density:
15.5 T/1000 Å3
[001] 8 3.7 x 5.1**
  Sorption (molecular cross section > 3.4Å): 2-dimensional
  Topological (pore opening > 6-ring): 2-dimensional
  Aiello, R. and Barrer, R.M.
  "Hydrothermal Chemistry of Silicates. Part XIV. Zeolite Crystallisation in Presence of Mixed Bases"
J. Chem. Soc. (A), , 1470-1475 (1970)
Material name:   TMA-E (Aiello and Barrer)
Chemical formula:   [Al9Si27O72]-EAB
  § Meier, W.M. and Groner, M.
  "Zeolite Structure Type EAB: Crystal Structure and Mechanism for the Topotactic Transformation of the Na, TMA Form"
J. Solid State Chem., 37, 204-218 (1981)
Name and Code derivation:
    TMA-E (Aiello and Barrer)
§ Chemical Formula and Unit Cell taken from the reference marked with this sign
Limiting Rings
8-ring viewed normal to [001]