PROTON MAGNETIC RESONANCE ABSORPTION IN HIGH TEMPERATURE PHASES OF ANHYDROUS SODIUM STEARATE

1964 ◽  
Vol 42 (5) ◽  
pp. 1098-1101 ◽  
Author(s):  
M. R. Barr ◽  
B. A. Dunell
Keyword(s):  
Nuclear Magnetic Resonance ◽  
High Temperature ◽  
Magnetic Resonance ◽  
Line Width ◽  
Proton Magnetic Resonance ◽  
Lattice Structure ◽  
Sodium Stearate ◽  
Resonance Absorption ◽  
Liquid Phases ◽  
Nuclear Magnetic Resonance Spectra

Nuclear magnetic resonance spectra of anhydrous sodium stearate have been observed between 114° and 320 °C. The observed changes in line width and second moment suggest a grouping of the mesomorphic phases into a waxy group in which a lattice structure is preserved for the polar ends of the molecules and a group consisting of the neat and liquid phases in which diffusion takes place freely.

High-Temperature Carbon-13 Nuclear Magnetic Resonance Spectra of Poly(vinyl chloride)

1971 ◽  
Vol 4 (4) ◽  
pp. 445-447 ◽  
Author(s):  
Charles J. Carman ◽  
A. R. Tarpley ◽  
J. H. Goldstein
Keyword(s):  
Nuclear Magnetic Resonance ◽  
High Temperature ◽  
Magnetic Resonance ◽  
Vinyl Chloride ◽  
Poly Vinyl Chloride ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The nuclear magnetic resonance spectra of pyrrole and [N-D]pyrrole

1969 ◽  
Vol 22 (6) ◽  
pp. 1199 ◽  
Author(s):  
GF Katekar ◽  
AG Moritz
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Proton Magnetic Resonance ◽  
Resonance Spectrum ◽  
Proton Magnetic Resonance Spectrum ◽  
Proton Spin ◽  
Proton Spectrum ◽  
Proton Proton ◽  
Nuclear Magnetic Resonance Spectra

The proton magnetic resonance spectrum at 60 MHz of pyrrole, spin- decoupled from 14N, has been studied under high resolution. Similar studies have been made on [N-D]pyrrole in which the proton spectrum was obtained simultaneously spin-decoupled from both the 14K and 2H nuclei. Analysis of the 13C-H spectra of pyrrole and [N-D]pyrrole, observed in natural abundance, gave values for all six proton-proton spin-spin couplings. Values for some of the couplings have been obtained directly and unambiguously from the spectra of samples of [S-H]pyrrole and [N- D]pyrrole in which the C-H protons have been predominantly exchanged for deuterium. The values for the couplings derived are J1,2 2.60, J1,3 2.45, J2,3 2.69, J2,4 1.44, J2,5 1.87, and J3,4 3.34 Hz.

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