ChemInform Abstract: Cross-Interaction Constants as a Measure of the Transition-State Structure. Part 1. The Degree of Bond Formation in Nucleophilic Substitution Reactions

ChemInform ◽  
1989 ◽  
Vol 20 (9) ◽  
Author(s):  
I. LEE ◽  
C. S. SHIM ◽  
S. Y. CHUNG ◽  
H. Y. KIM ◽  
H. W. LEE
Keyword(s):  
Transition State ◽  
Nucleophilic Substitution ◽  
Bond Formation ◽  
State Structure ◽  
Transition State Structure ◽  
Substitution Reactions ◽  
Nucleophilic Substitution Reactions

ρ as a quantitative measure of transition state structure

1979 ◽  
Vol 57 (3) ◽  
pp. 255-257 ◽  
Author(s):  
Bo-Long Poh
Keyword(s):  
Free Radicals ◽  
Hydrogen Atom ◽  
Transition State ◽  
Nucleophilic Substitution ◽  
Electrophilic Substitution ◽  
Quantitative Measure ◽  
Hydrogen Atom Abstraction ◽  
State Structure ◽  
Transition State Structure ◽  
Substitution Reactions

The values of the Brønsted exponent for several examples of nucleophilic substitution reactions, aromatic electrophilic substitution reactions, and hydrogen atom abstraction from toluene by free radicals have been calculated from the ρ values of the corresponding reactions. The magnitude of the Brønsted exponent is shown to indicate the degree of charge developed in the transition state structure.

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