Electroreduction mechanism of N-phenylhydroxylamines in aprotic solvents: formation of hydrogen bonds between N-(3-nitrophenyl)hydroxylamine and its radical anion

2017 ◽  
Vol 66 (3) ◽  
pp. 479-482
Author(s):  
A. S. Mendkovich ◽  
M. A. Syroeshkin ◽  
V. P. Gultyai ◽  
A. I. Rusakov
Keyword(s):  
Hydrogen Bonds ◽  
Radical Anion ◽  
Aprotic Solvents

Complexes of amic acids with polar aprotic solvents. VI. System of hydrogen-bonds in complexes of amic acids and polyamic acids with amide solvents

1987 ◽  
Vol 32 (3) ◽  
pp. 807-814 ◽  
Author(s):  
S. A. Dauengauer ◽  
L. A. Shibaev ◽  
Yu. N. Sazanov ◽  
N. G. Stepanov ◽  
T. M. Bulina
Keyword(s):  
Hydrogen Bonds ◽  
Aprotic Solvents

Perylene diimide radical anion constructed by hydrogen bonds and its colorimetric chemodosimeter for the rapid detection of Fe3+

2021 ◽  
Vol 1224 ◽  
pp. 129038
Author(s):  
Duo Dong ◽  
GengWen Yin ◽  
Wenlong Hou ◽  
Danyang Dong ◽  
Chengbo Zhang ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Rapid Detection ◽  
Radical Anion ◽  
Perylene Diimide

Visible Absorption Spectrum of Benzophenone Radical Anion in Dipolar Aprotic Solvents

2000 ◽  
Vol 65 (10) ◽  
pp. 1573-1579 ◽  
Author(s):  
Elżbieta Wagner-Czauderna ◽  
Marek K. Kalinowski
Keyword(s):  
Radical Anion ◽  
Visible Region ◽  
Correlation Equation ◽  
Aprotic Solvents ◽  
Acceptor Number ◽  
Solvatochromic Shift ◽  
Visible Absorption ◽  
Relative Stabilization ◽  
Two Parameter ◽  
Dipolar Aprotic Solvents

Two-parameter regression including the acceptor number (AN) and permittivity (ε) of the solvent explains to some extent the solvatochromic shift of the absorption band of benzophenone radical anion (Ph2C•-O-) in the visible region. In 11 dipolar aprotic solvents characterized by ε > 10, in which the Ph2C•-O- anions are not associated with (C2H5)4N+ cations (the radicals were prepared by cathodic reduction of benzophenone in the presence of (C2H5)4N+ClO4- as electrolyte) a correlation equation has the form νmax (in cm-1) = 86.2(AN) - 19.7 · 103[(ε - 1)/(2ε + 1)] + 21.32 · 103. It reflects the relative stabilization of the ground state in a medium with a high acceptor number and an increase in the dipole moment of Ph2C•-O- during excitation.

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