Database of Disordered Zeolite Structures
 
Intergrowth Family EMM-17
1-dimensional stacking disorder
Periodic Building Unit
 
  Periodic Building Unit (PerBU): EMM-17_layer  
 
  Layer symmetry p 1 2/m 1  
 
  2D cell parameters a = 23.37 Å b = 12.60 Å gamma = 90°    
 
  References
    Weston, S.C., Peterson, B.K., Gatt, J.E., Lonergan, W.W., Vroman, H.B., Afeworki, M., Kennedy, G.J., Dorset, D.L., Mervyn D. Shannon, M.D. and Strohmaier, K.G.
   "EMM-17, a new three dimensional zeolite with unique 11-ring channels and superior catalytic isomerization performance"
   J. Amer. Chem. Soc., 141, 15910-15920 (2019)

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

 
Symmetry
Operation*		 Translation* Comment Image
 

* relative to the previous layer of connectors


Simplest ordered end members


 
  Polymorph EMM-17_A
 
Cell Parameters: orthorhombis P 21 21 2: (# 18)
  a = 24.7691 Å b = 23.3663 Å c = 12.6009 Å  
  α = 90.0000° β = 90.0000° γ = 90.0000°  
  Volume = 7292.9 Å3
Framework Density (FDSi): 16.4
Ring sizes (# T atoms): 11  10  6  5  4    
Channel dimensionality: Topological (pore opening > 6-ring): 3-dimensional  
  Maximum diameter of a sphere:  
    that can be included 6.63 Å  
    that can diffuse along a:  4.6 Å b:  5.48 Å c:  5.22 Å  
    additional volume data  
Composite Building Units:
mel
mor (t-tes )
bea
stf (t-nuh )
mtw (t-mtw )
In this space group and setting, the PerBUs are stacked along [100].
Note: This polymorph has NOT been observed as a pure ordered material
 
 
  Polymorph EMM-17_B
 
Cell Parameters: monoclinic P 1 21/c 1: (# 14)
  a = 12.5600 Å b = 23.3914 Å c = 26.1944 Å  
  α = 90.0000° β = 108.9300° γ = 90.0000°  
  Volume = 7279.4 Å3
Framework Density (FDSi): 16.5
Ring sizes (# T atoms): 11  10  6  5  4    
Channel dimensionality: Topological (pore opening > 6-ring): 3-dimensional  
  Maximum diameter of a sphere:  
    that can be included 6.6 Å  
    that can diffuse along a:  5.2 Å b:  5.54 Å c:  4.65 Å  
    additional volume data  
Composite Building Units:
mel
mor (t-tes )
bea
stf (t-nuh )
mtw (t-mtw )
In this space group and setting, the PerBUs are stacked along [001].
Adjacent layers generated by the same connectivity pattern (same basic color) are shown with different shades for clarity.
Note: This polymorph has NOT been observed as a pure ordered material
 

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