Spectral Properties of Some Weak Electron-Donor-Acceptor (EDA)-Complexes in the Far Infrared (FIR.) Region (40-400 cm?1)

1979 ◽  
Vol 62 (1) ◽  
pp. 140-151 ◽  
Author(s):  
Michel Rossi ◽  
Edwin Haselbach
Keyword(s):  
Electron Donor ◽  
Spectral Properties ◽  
Far Infrared ◽  
Donor Acceptor ◽  
Weak Electron

Thiazole as a weak electron-donor unit to lower the frontier orbital energy levels of donor–acceptor alternating conjugated materials

2013 ◽  
Vol 49 (85) ◽  
pp. 9938 ◽  
Author(s):  
Elena Zaborova ◽  
Patricia Chávez ◽  
Rony Bechara ◽  
Patrick Lévêque ◽  
Thomas Heiser ◽  
...  
Keyword(s):  
Electron Donor ◽  
Energy Levels ◽  
Orbital Energy ◽  
Frontier Orbital ◽  
Conjugated Materials ◽  
Donor Acceptor ◽  
Weak Electron ◽  
Frontier Orbital Energy

The analysis of excited-state equilibria of weak electron donor–acceptor systems:

1998 ◽  
Vol 79 (2) ◽  
pp. 65-77 ◽  
Author(s):  
I. Deperasinska ◽  
J. Prochorow ◽  
J. Dresner
Keyword(s):  
Excited State ◽  
Electron Donor ◽  
Donor Acceptor ◽  
Weak Electron

n–π Electron donor–acceptor complexes. I. Aliphatic amines with benzonitrile

1981 ◽  
Vol 59 (9) ◽  
pp. 1291-1296 ◽  
Author(s):  
J. Anunziata ◽  
J. Singh ◽  
J. J. Silber
Keyword(s):  
Experimental Data ◽  
Temperature Effect ◽  
Electron Donor ◽  
Iterative Procedure ◽  
Extinction Coefficients ◽  
A Value ◽  
Amine Structure ◽  
Donor Acceptor ◽  
Spectroscopic Behavior ◽  
Weak Electron

Interaction of diethyl, triethyl, n-butyl, di-n-butyl and tri-n-butyl amines as n-donor with benzonitrile as π-acceptor has been studied in n-hexane. The formation of weak electron donor–acceptor (EDA) complexes is proposed to explain the spectroscopic behavior of the mixtures. An iterative procedure was used to obtain values of stability constants (K) and extinction coefficients (ε). The fact that from the new absorption observed for these systems a value of K and a finite constant value of ε could be determined gives proof of the existence of EDA complexes. This conclusion is further supported by the temperature effect observed. Correlations of the experimental data with amine structure and other types of amine complexes were found.

Metal-Free Photoinduced Hydroalkylation Cascade Enabled by an Electron-Donor-Acceptor Complex

2020 ◽  
Author(s):  
José Tiago Menezes Correia ◽  
Gustavo Piva da Silva ◽  
Camila Menezes Kisukuri ◽  
Elias André ◽  
Bruno Pires ◽  
...  
Keyword(s):  
Electron Donor ◽  
Functional Group ◽  
Photoexcited Electron ◽  
One Pot ◽  
Quaternary Centers ◽  
Metal Free ◽  
Acceptor Complex ◽  
Catalyst Free ◽  
Donor Acceptor ◽  
Radical Cascade

A metal- and catalyst-free photoinduced radical cascade hydroalkylation of 1,7-enynes has been disclosed. The process is triggered by a SET event involving a photoexcited electron-donor-aceptor complex between NHPI ester and Hantzsch ester, which decomposes to afford a tertiary radical that is readily trapped by the enyne. <a>The method provides an operationally simple, robust and step-economical approach to the construction of diversely functionalized dihydroquinolinones bearing quaternary-centers. A sequential one-pot hydroalkylation-isomerization approach is also allowed giving access to a family of quinolinones. A wide substrate scope and high functional group tolerance was observed in both approaches</a>.

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