Unpaired Electron Distribution in π-Systems

1962 ◽  
Vol 84 (21) ◽  
pp. 4100-4106 ◽  
Author(s):  
D. R. Eaton ◽  
A. D. Josey ◽  
R. E. Benson ◽  
W. D. Phillips ◽  
T. L. Cairns
Keyword(s):  
Unpaired Electron ◽  
Electron Distribution

ChemInform Abstract: NITROXIDE RADICALS PART 13, UNPAIRED ELECTRON DISTRIBUTION IN 1- AND 2-NAPHTHYL 1-BUTYL NITROXIDES

1973 ◽  
Vol 4 (29) ◽  
pp. no-no
Author(s):  
J. LINDSAY DUNCAN ◽  
ALEXANDER R. FORRESTER ◽  
GORDON MCCONNACHIE ◽  
PETER D. MALLINSON
Keyword(s):  
Unpaired Electron ◽  
Electron Distribution ◽  
Nitroxide Radicals

Unpaired electron distribution in .sigma. systems

1967 ◽  
Vol 89 (16) ◽  
pp. 4040-4050 ◽  
Author(s):  
Donald R. Eaton ◽  
Alden D. Josey ◽  
Richard Edward. Benson
Keyword(s):  
Unpaired Electron ◽  
Electron Distribution

Dynamische Kernpolarisation in Lösungen von freien Radikalen in substituierten Pentafluorbenzolen / Dynamic nuclear polarisation in solutions of free radicals in substituted pentafluorobenzenes

1974 ◽  
Vol 29 (7) ◽  
pp. 1071-1076 ◽  
Author(s):  
Aytaç Yalçiner
Keyword(s):  
Magnetic Field ◽  
Free Radicals ◽  
Unpaired Electron ◽  
Weak Magnetic Field ◽  
Electron Distribution ◽  
Hyperfine Coupling ◽  
Scalar Coupling ◽  
Aromatic System ◽  
Dynamic Nuclear Polarisation ◽  
Nuclear Polarisation

Intermolecular scalar hyperfine coupling between unpaired electron orbitals and 19F nuclei has been studied in solutions of free radicals in substituted pentafluorobenzenes. Dynamic nuclear polarisation experiments in a weak magnetic field and at various temperatures have shown that both the strength of the intermolecular interaction and the range, depend sensitively upon the π-electron distribution of the aromatic system. The amount of scalar coupling increases with substitution in the sequence H, CH3 , J, Br, CI, F, CN and with the kind of radicals in the order TTBP, DPPH and BDPA.

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