Database of Zeolite Structures
 

Framework Type VNI
Type Material
  Material Name: VPI-9    
 
Chemical Formula:
 
|Rb+44K+4 (H2O)48| [Zn24Si96 O240]-VNI
 
   
Unit Cell:
 
tetragonal

 P 41 21 2 (# 92)
    a = 9.8840Å b = 9.8840Å c = 73.6500Å  
    α = 90.000 ° β = 90.000° γ = 90.000°  
(Relationship to unit cell of Framework Type: a' = a, b' = b, c' = 2c)
   
Framework density:
 
16.7 T/1000 Å3
 
 
Channels:
 
{<110> 8 3.1 x 4.0 <-> [001] 8 3.5 x .3.6}***
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
    McCusker, L.B., Grosse-Kunstleve, R.W., Baerlocher, Ch., Yoshikawa, M. and Davis, M.E.
   "Synthesis optimization and structure analysis of the zincosilicate molecular sieve VPI-9"
   Microporous Materials, 6, 295-309 (1996)
 
 
Name and Code derivation:
    Virgina Polytechnic Institute - nine
  VPI-9 (nine)
  VNI
Limiting Rings
 
8-ring along <110>

8-ring viewed along [001]

2nd 8-ring along <110>