Database of Zeolite Structures
 
Framework Type OFF
29Si MAS NMR spectrum of dealuminated Offretite


Note: Toggle plots by clicking on the legend


Peak
T site
Q-type
Chemical Shift
Relative
Peak Width
Peak Shape
Assigment
(topological)
(ppm)
Peak Area
(ppm)
(x)L (1-x)G
Si2
T2
Q4(0Al)
-114.99
1.000
1.30
1.000
Si1
T1
Q4(0Al)
-109.69
2.000
1.09
1.000



References
Spectrum

  Authors: Fyfe, C.A., Gobbi, G.C., Murphy, W.J., Ozubko, R.S., Slack, D.A.
  Title: Investigation of the factors affecting the 29Si MAS NMR linewidths of zeolites
  Reference: Chem. Lett., 12, 1547-1550 (1983)
DOI: 10.1246/cl.1983.1547
  Figure: Figure 1d  

Peak Assignment

  Authors: Fyfe, C.A., Gobbi, G.C., Murphy, W.J., Ozubko, R.S., Slack, D.A.
  Title: Investigation of the factors affecting the 29Si MAS NMR linewidths of zeolites
  Reference: Chem. Lett., 12, 1547-1550 (1983)
DOI: 10.1246/cl.1983.1547
  Method: relative peak intensities
  Figure: Figure 1d  

Crystal Structure

  Authors: Gard, J.A. and Tait, J.M.
  Title: The crystal structure of the zeolite offretite, K1.1Ca1.1Mg0.7[Si12.8Al5.2O36]ยท15.2H2O
  Reference: Acta Crystallogr., B28, 825-834 (1972)

Digitization and Modeling of Spectrum

  To reference this collection of solid-state NMR spectra, we suggest:
  Authors: Brouwer, D.H., Brouwer, C.C., Mesa, S., Semelhago, C.A., Steckley, E.E., Sun, M.P.Y., Mikolajewski, J.G., and Baerlocher, Ch.
  Title: Solid-state 29Si NMR spectra of pure silica zeolites for the International Zeolite Association Database of Zeolite Structures
  Reference: Microporous Mesoporous Mat., 297, 110000 (2020)
DOI: 10.1016/j.micromeso.2020.110000
Spectrum information

  Obs. freq. 79.5 MHz (Field = 9.4 Tesla)
  Pulse sequence single pulse
  Spectrum Digitized and processed by Brouwer Lab, Redeemer University
  Data processing Spectrum digitized with WebPlotDigitizer and deconvoluted with Mathematica notebook
 

Chemical Formula

  [Si - O]-OFF

Downloads

  Download digitized spectrum in JCAMP-DX format
(This file includes also the data listed on this page)
  Download all lines from the above plot in .csv format
(This file contains only the plotted data)