Matrix isolation nuclear magnetic resonance studies of methyl group spin–rotation coupling

1989 ◽  
Vol 91 (8) ◽  
pp. 4504-4514 ◽  
Author(s):  
Michael Murphy ◽  
David White
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Matrix Isolation ◽  
Spin Rotation ◽  
Methyl Group ◽  
Magnetic Resonance Studies ◽  
Group Spin ◽  
Nuclear Magnetic

Nuclear magnetic resonance studies on the configurations and conformations of heterocyclic nitrosamines

1968 ◽  
Vol 46 (17) ◽  
pp. 2827-2833 ◽  
Author(s):  
Y. L. Chow ◽  
C. J. Colón
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shifts ◽  
Methyl Group ◽  
Magnetic Resonance Studies ◽  
Rigid System ◽  
Nuclear Magnetic Resonance Spectra ◽  
Equatorial Proton ◽  
Configuration And Conformation ◽  
Nuclear Magnetic

The nuclear magnetic resonance spectra of various heterocyclic nitrosamines were studied in solution. A qualitative view of the long-range diamagnetic effects of a nitrosamino group is advanced and correlated with the chemical shifts of α-equatorial protons and the methyl group in those nitrosamines possessing a preferred conformation or a rigid system. The use of this correlation to decide the configuration and conformation of heterocyclic nitrosamines is discussed. A large chemical shift difference (ca. 3 p.p.m.) between a cis α-axial and a cis α-equatorial proton was noted.

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