scholarly journals Reaction of aromatic N-oxides with dipolarophiles. X. Role of charge-transfer complexes in 1,3-dipolar cycloaddition of pyridine N-oxides to phenyl isocyanate.

1986 ◽  
Vol 34 (3) ◽  
pp. 966-974 ◽  
Author(s):  
KAZUNOBU HARANO ◽  
RIE KONDO ◽  
MOTOJI MURASE ◽  
TOSHIKAZU MATSUOKA ◽  
TAKUZO HISANO
Keyword(s):  
Charge Transfer ◽  
Phenyl Isocyanate ◽  
Dipolar Cycloaddition ◽  
Charge Transfer Complexes

Self-Assembly of Alkali Lignin in Tetrahydrofuran

2012 ◽  
Vol 550-553 ◽  
pp. 57-61
Author(s):  
Hao Li ◽  
Yong Hong Deng ◽  
Kai Huang
Keyword(s):  
Charge Transfer ◽  
Electrostatic Interaction ◽  
Self Assembly ◽  
The Self ◽  
Charge Transfer Complexes ◽  
Layer By Layer ◽  
Alkali Lignin ◽  
Higher Temperature ◽  
Effects Of Temperature

Alkali lignin (AL) was used as a polyanion to form layer-by-layer self-assembled film with PDAC as a polycation. The effects of temperature and concentration on the adsorption characteristics of AL were investigated. Iodine was added into AL solutions to study the role of π-π interaction in self-assembly of AL and PDAC. Results show that the self-assembly of AL/PDAC is mainly driven by π-π interaction and electrostatic interaction. A higher temperature or a larger concentration can enhance the aggregation of lignin. I2 can form lignin–iodine charge–transfer complexes with AL to reduce the degree of aggregation of AL, so the adsorbed amount of AL decreases significantly with increasing iodine contents.

Correlation of kinetic data of 1,3-dipolar cycloadditions of C-benzoyl-N-phenylnitrones with the homo energies of furan derivatives

1981 ◽  
Vol 46 (6) ◽  
pp. 1504-1512 ◽  
Author(s):  
Lubor Fišera ◽  
Anton Gáplovský ◽  
Hans-Joachim Timpe ◽  
Jaroslav Kováč
Keyword(s):  
Charge Transfer ◽  
Rate Constants ◽  
Kinetic Data ◽  
Empirical Equation ◽  
Dipolar Cycloaddition ◽  
Charge Transfer Complexes ◽  
Electron Affinities ◽  
Furan Derivatives ◽  
Dipolar Cycloadditions ◽  
Experimental Values

Application of PMO treatment to 1,3-dipolar cycloaddition of C-benzoyl-N-phenylnitrone with furan derivatives is described. Ionization potentials of 2-R-substituted furan derivatives (R = H, CH3, C2H5, CH2OH, CH2OCOCH3, C6H5, CHO) and 2,5-dimethylfurane representing experimental values of the HOMO energies have been determined from energies of the respective charge-transfer complexes with TCNE. Good correlation between IP and k2 rate constants indicates that the reaction is controlled by the LUMO(nitrone)/HOMO(furan deriv.) interaction. Electron affinities of the furan derivatives were determined from IP and energies of π-π* transitions using empirical equation ΔE(π-π*) = IP-EA-450.58 kJ mol-1.

Substituent-Induced Switch of the Role of Charge-Transfer Complexes in the Diels–Alder Reactions of o-Chloranil and Styrenes

2012 ◽  
Vol 77 (14) ◽  
pp. 5971-5981 ◽  
Author(s):  
Sergiy V. Rosokha ◽  
Vasiliy Korotchenko ◽  
Charlotte L. Stern ◽  
Vladimir Zaitsev ◽  
Jeremy T. Ritzert
Keyword(s):  
Charge Transfer ◽  
Diels Alder ◽  
Charge Transfer Complexes

ChemInform Abstract: POSSIBLE ROLE OF CHARGE-TRANSFER COMPLEXES IN CATIONIC POLAR CYCLOADDITION

1978 ◽  
Vol 9 (29) ◽  
Author(s):  
C. K. BRADSHER ◽  
G. L. B. CARLSON ◽  
N. A. PORTER ◽  
I. J. WESTERMAN ◽  
T. G. WALLIS
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complexes
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