Studies of Chemical Shift Anisotropy in Liquid Crystal Solvents. IV. Results for Some Fluorine Compounds

1971 ◽  
Vol 54 (9) ◽  
pp. 4020-4023 ◽  
Author(s):  
Costantino S. Yannoni ◽  
Benjamin P. Dailey ◽  
Gerald P. Ceasar
Keyword(s):  
Liquid Crystal ◽  
Chemical Shift ◽  
Chemical Shift Anisotropy ◽  
Fluorine Compounds

Notizen:13C-NMR Chemical Shift Anisotropy of Acetylene

1972 ◽  
Vol 27 (10) ◽  
pp. 1536-1537 ◽  
Author(s):  
Gerhard Englert
Keyword(s):  
Liquid Crystal ◽  
Chemical Shift ◽  
Nematic Liquid Crystal ◽  
13C Nmr ◽  
Chemical Shift Anisotropy ◽  
Isotropic Phase ◽  
Nmr Spectrum ◽  
Chemical Shift Difference ◽  
Shielding Tensor ◽  
C Nmr

Abstract The 13C-NMR spectrum at 22.63 MHz and the PMR spectrum at 90 MHz of 13C enriched acetylene oriented in a nematic liquid crystal were measured by the pulsed Fourier technique and analysed. From the chemical shift difference between the nematic and the isotropic phase the anisotropy of the 13C shielding tensor of acetylene Δσ=+253 + 17 ppm was calculated.

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