Zeolite syntheses using linear diquats of varying length in fluoride media. The synthesis of ITQ-8, ITQ-10, ITQ-14 and high silica Nu-87Electronic supplementary information (ESI) available: 1H and 13C NMR spectra of MnBQ2+ linear diquats and XRD pattern of the “unknown material” from Table 4. See http://www.rsc.org/suppdata/jm/b1/b105273j/

2002 ◽  
Vol 12 (2) ◽  
pp. 249-257 ◽  
Author(s):  
M. J. Díaz-Cabañas ◽  
M. A. Camblor ◽  
Z. Liu ◽  
T. Ohsuna ◽  
O. Terasaki
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Supplementary Information ◽  
13C Nmr Spectra ◽  
1H And 13C Nmr ◽  
Xrd Pattern ◽  
Varying Length ◽  
High Silica

Some Considerations Regarding the 1H and 13C Spectra of 4-(1-azulenyl)-2,6-bis(2-heteroaryl-vinyl)- pyrylium and Pyridinium and their Corresponding Pyridines

2018 ◽  
Vol 69 (1) ◽  
pp. 64-69
Author(s):  
Liviu Birzan ◽  
Mihaela Cristea ◽  
Constantin C. Draghici ◽  
Alexandru C. Razus
Keyword(s):  
Double Bond ◽  
13C Nmr ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
Pyridinium Salts ◽  
13C Nmr Spectra ◽  
1H And 13C Nmr ◽  
Pyrylium Salts

The 1H and 13C NMR spectra of several 2,6-diheteroarylvinyl heterocycles containing 4-azulenyl moiety were recorded and their proton and carbon chemical shifts were compared with those of the compounds without double bond between the heterocycles. The influence of the nature of central and side heterocycles, molecule polarization and anisotropic effects were revealed. The highest chemical shifts were recorded for the pyrylium salts and the lowest at pyridines, but in the case of the pyridinium salts, the protons chemical shifts at the central heterocycle are more shielded due to a peculiar anisotropy of the attached vinyl groups.

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