EFN: Type Material
 
Database of Zeolite Structures
 

Framework Type EFN
Reference Material
  Material Name: EMM-59    
 
Chemical Formula:		  
|(DEMAECp)2| [B5Si119O448]-EFN
DEMAECp = C19H42N2+2 = (cyclopentane-1,1-diyl)bis(N,N-diethyl-N-methylethane-1-aminium
= 2-[1-[2-[diethyl(methyl)azaniumyl]ethyl]cyclopentyl]ethyl-diethyl-methylazanium
SMILES: C1(CCCC1)(C[N](CC)(C)CC)C[N](C)(CC)CC
Images:  stick or 
   
Unit Cell: 		 
monoclinic
 C 1 2/m 1 (# 12)
    a' = 42.6773 Å b' = 20.0856 Å c' = 15.5911 Å  
    α' = 90.000° β' = 97.988° γ' = 90.000°  
   
Framework Density: 		 
16.9 T/1000 Å3
 
  
Channels: 		 
[010] 12 7.6 x 5.9 <-> [001] 10 5.2 x 5.0 <-> [100] 10 5.2 x 4.8
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
 
Stability:		  
Calcination leads to a framework with boron atoms (which share some sites with silicon atoms) adopting a trigonal environment.
   
References:
  Cho, J., Kapaca, E., Wang, B., Mabon, R., Vroman, H., Zou, X., Burton, A. W. and Willhammar, T.
  "Localized Boron Sites in Large Pore Borosilicate Zeolite EMM-59 Determined by Electron Crystallography"
J. Am. Chem. Soc. , 146, 34916−34923 (2024)
 
  
Name and Code derivation:
    Exxon Mobil Material - fifty nine
  EMM-59 (fifty nine)
  EFN
Limiting Rings
 
Elliptical 12-ring viewed along [010]

Circular 12-ring viewed along [010]
10-ring viewed along [001]

10-ring viewed approx. along [101]

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