Wide line nuclear magnetic resonance study of molecular motions in solid sulpholan

1974 ◽  
Vol 70 ◽  
pp. 1 ◽  
Author(s):  
Denis F. R. Gilson ◽  
Pier Paulo Saviotti
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nuclear Magnetic Resonance Study ◽  
Molecular Motions ◽  
Magnetic Resonance Study ◽  
Line Nuclear Magnetic Resonance ◽  
Wide Line ◽  
Nuclear Magnetic

A wide line nuclear magnetic resonance study of molecular motion in pyridinium salts

1970 ◽  
Vol 48 (16) ◽  
pp. 2625-2627 ◽  
Author(s):  
C. H. Matthews ◽  
D. F. R. Gilson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Molecular Motion ◽  
Nuclear Magnetic Resonance Study ◽  
Pyridinium Salts ◽  
Magnetic Resonance Study ◽  
Line Nuclear Magnetic Resonance ◽  
Pyridinium Ring ◽  
Wide Line ◽  
Nuclear Magnetic

Wide line nuclear magnetic resonance studies of pyridinium hexafluorophosphate, chloride, and nitrate show line width and second moment transitions which are attributed to reorientational motions of the pyridinium ring. The differences in transition temperatures are due to the different hydrogen bonded structures in the three salts.

A 14N nuclear magnetic resonance study on nitrogen–oxygen–halogen compounds

1969 ◽  
Vol 47 (22) ◽  
pp. 4247-4251 ◽  
Author(s):  
A. M. Qureshi ◽  
J. A. Ripmeester ◽  
F. Aubke
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nuclear Magnetic Resonance Study ◽  
Magnetic Resonance Study ◽  
Side Band ◽  
Nuclear Magnetic Resonance Spectrometer ◽  
Halogen Compounds ◽  
Nuclear Magnetic Resonance Spectra ◽  
Line Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

14N nuclear magnetic resonance spectra of nitrogen oxides, fluorides, and oxyhalides have been recorded using direct measurement with a broad line nuclear magnetic resonance spectrometer. Also investigated are some nitrogen-containing fluoro- and oxo-cations in protonic solvents. Using the side band technique, fine structure due to 14N–19F spin–pin interaction could be resolved for nitrogen trifluoride, nitrogenoxide trifluoride, and nitrylfluoride.

A wide-line nuclear magnetic resonance study of molecular motions in piperidinium salts

1976 ◽  
Vol 54 (22) ◽  
pp. 3483-3486 ◽  
Author(s):  
Marie-Claude Bernard ◽  
Christopher Orvig ◽  
D. F. R. Gilson
Keyword(s):  
Crystal Structure ◽  
Nuclear Magnetic Resonance ◽  
Nuclear Magnetic Resonance Study ◽  
Differential Scanning Calorimetric ◽  
Temperature Phase ◽  
Molecular Motions ◽  
Magnetic Resonance Study ◽  
Line Nuclear Magnetic Resonance ◽  
Wide Line ◽  
Calorimetric Studies

Wide line nmr and differential scanning calorimetric studies confirm the existence of crystal phase transitions in piperidinium iodide. The highest temperature phase involves isotropic rotation of the piperidinium ion. No crystal structure transitions occur in the chloride, bromide, or hexafluorophosphate salts although these compounds undergo second moment transitions indicating probable rotation of the piperidinium ion about the N—C3 axis.

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