Large formation constant of a transient 1:1 dl-D3-trishomocubylidene-D3-trishomocubane-dibromine charge-transfer complex: general implications for the mechanism of electrophilic bromination of olefins

1993 ◽  
Vol 58 (13) ◽  
pp. 3575-3577 ◽  
Author(s):  
G. Bellucci ◽  
R. Bianchini ◽  
C. Chiappe ◽  
V. R. Gadgil ◽  
A. P. Marchand
Keyword(s):  
Charge Transfer ◽  
Formation Constant ◽  
Charge Transfer Complex ◽  
Electrophilic Bromination ◽  
Large Formation

scholarly journals Electron Donor-Acceptor Interaction of 8-Hydroxyquinoline with Citric Acid in Different Solvents: Spectroscopic Studies

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Demelash Jado ◽  
Khalid Siraj ◽  
Nathan Meka
Keyword(s):  
Charge Transfer ◽  
Citric Acid ◽  
Complex Formation ◽  
Electron Donor ◽  
Formation Constant ◽  
Charge Transfer Complex ◽  
Standard Free Energy ◽  
Physical Parameters ◽  
Stoichiometric Ratio ◽  
Standard Free Energy Change

Charge transfer complex formation between 8-hydroxyquinoline as the electron donor and citric acid as the electron acceptor has been studied spectrophotometrically in ethanol and methanol solvents at room temperature. Absorption band due to charge transfer complex formation was observed near 320 and 325 nm in ethanol and methanol, respectively. The stoichiometric ratio of the complex has been found 3 : 1 by using Job’s and conductometric titration methods. Benesi-Hildebrand equation has been applied to estimate the formation constant and molecular extinction coefficient. It was found that the value of formation constant was larger in ethanol than in methanol. The physical parameters, ionization potential, and standard free energy change of the formed complex were determined and evaluated in the ethanol and methanol solvents.

Complexation par transfert de charge de la chlorpromazine en présence d'iode; action thyroïdienne sécondaire de cette molécule

1984 ◽  
Vol 62 (9) ◽  
pp. 1807-1811 ◽  
Author(s):  
Anne-Catherine Absil ◽  
Jacques Buxeraud ◽  
Claude Raby
Keyword(s):  
Charge Transfer ◽  
Thermodynamic Parameters ◽  
Molecular Interaction ◽  
Electron Spectroscopy ◽  
Formation Constant ◽  
Charge Transfer Complex ◽  
Tertiary Amines ◽  
Acceptor Interaction ◽  
Donor Acceptor ◽  
A Charge

Molecular interaction between iodine and chlorpromazine is investigated by electron spectroscopy. Iodine forms a charge transfer complex with chlorpromazine, with 1:1 stoichiometry and of the n–σ type. The values of the formation constant (Kc at20 °C = 3166 ± 19 L mol−1) and thermodynamic parameters (ΔH0 = −11.22 ± 0.11 kcal mol−1, ΔS0 = −22.29 ± 0.38 cal mol−1 K−1) show a strong donor–acceptor interaction, comparable to that obtained with tertiary amines. The formation constant is compared to those obtained with antithyroid molecules. Chlorpromazine appears to have no effect on the intrathyroid cycle of iodine.

scholarly journals Anion-enhanced excited state charge separation in a spiro-locked N-heterocycle-fused push-pull zinc porphyrin

2021 ◽  
Author(s):  
Mandeep K. Chahal ◽  
Anuradha Liyanage ◽  
Ajyal Z. Alsaleh ◽  
Paul A. Karr ◽  
Jonathan P. Hill ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Charge Separation ◽  
Charge Transfer Complex ◽  
Zinc Porphyrin ◽  
New Type ◽  
State Charge

A new type of push–pull charge transfer complex, viz., a spiro-locked N-heterocycle-fused zinc porphyrin, ZnP-SQ, is shown to undergo excited state charge separation, which is enhanced by axial F− binding to the Zn center.

scholarly journals Multi-configurational Ehrenfest simulations of ultrafast nonadiabatic dynamics in a charge-transfer complex

2018 ◽  
Vol 149 (24) ◽  
pp. 244107 ◽  
Author(s):  
Tianji Ma ◽  
Matteo Bonfanti ◽  
Pierre Eisenbrandt ◽  
Rocco Martinazzo ◽  
Irene Burghardt
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Nonadiabatic Dynamics ◽  
A Charge

scholarly journals Exploring the Franck-Condon region of a photoexcited charge transfer complex in solution to interpret femtosecond stimulated Raman spectroscopy: excited state electronic structure methods to unveil non-radiative pathways

2021 ◽  
Author(s):  
Federico Coppola ◽  
Paola Cimino ◽  
Umberto Raucci ◽  
Maria Gabriella Chiariello ◽  
Alessio Petrone ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Electronic Structure ◽  
Excited State ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Main Role ◽  
Photoinduced Charge Transfer ◽  
Electronic Structure Methods ◽  
Franck Condon ◽  
Photoinduced Charge

We present electronic structure methods to unveil non-radiative pathways of photoinduced charge transfer (CT) reactions that play a main role in photophysics and light harvesting technologies. A prototypical π-stacked molecular...

scholarly journals Isolation and X-ray Crystal Structure of an Electrogenerated TEMPO–N3 Charge-Transfer Complex

2021 ◽  
Author(s):  
Hosea M. Nelson ◽  
Juno C. Siu ◽  
Ambarneil Saha ◽  
Duilio Cascio ◽  
Samantha N. MacMillan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
X Ray
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