The density matrix theory of triple-quantum filtered COSY (TQF-COSY) NMR experiments applied to an AX system of spins S=1: An example of passive coupling in two-dimensional NMR spectroscopy

2015 ◽  
Vol 44A (6) ◽  
pp. e21384
Author(s):  
Pierre Kempgens ◽  
Andrew L. Pinchuck
Keyword(s):  
Nmr Spectroscopy ◽  
Density Matrix ◽  
Matrix Theory ◽  
Two Dimensional ◽  
Density Matrix Theory ◽  
Cosy Nmr

c. Internal rotation of the nitroso group in p-substituted nitrosoanilines by the density matrix line-shape method

1974 ◽  
Vol 27 (1) ◽  
pp. 21 ◽  
Author(s):  
PD Buckley ◽  
AR Furness ◽  
KW Jolley ◽  
DN Pinder
Keyword(s):  
Density Matrix ◽  
Internal Rotation ◽  
Line Shape ◽  
Matrix Theory ◽  
Activation Parameters ◽  
Nitroso Group ◽  
Approximate Methods ◽  
Density Matrix Theory

Density matrix theory has been applied to study the barrier to internal rotation about the Ar-NO bond in N,N-dimethyl-p-nitrosoaniline and N,N-diethyl-p-nitrosoaniline. Theoretical fits to experimental n.m.r. spectra have been obtained in the range - 30°C to +40°C. Activation parameters have been determined and compared with those obtained by more approximate methods.

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