Database of Reactivity Parameters E and N/s
(last update: 16.02.2009)
Equation (1) derives the rate constants for the combinations of
electrophiles with nucleophiles:
log
k20°C
= s (N + E) (1)
E = electrophilicity parameter
N = nucleophilicity parameter
s = nucleophile-specific slope parameter
The database contains a compilation of the published
reactivity parameters E, N and s.
Please note: In the database the electrophiles and nucleophiles
are classified by stars.
- 5 stars: reference electrophile/nucleophile
- 4 stars: quasi-reference electrophile/nucleophile
- 3 stars: at least 2 reference electrophiles/nucleophiles have been used for the determination of the reactivity parameter(s)
- 1 star: only 1 reference electrophile/nucleophile has been used for the determination of the reactivity parameter E or N
(s was estimated)
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Database
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Reactivity Scales Poster 
(version of 16.02.2009)
