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Swain-Lupton equation definition
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A dual parameter approach to the correlation analysis of substituent effects, which involves a field constant (F) and a resonance constant (R). The original treatment was modified later. SWAIN and LUPTON (1968); SWAIN, UNGER, ROSENQUIST and SWAIN (1983).

The procedure has been considerably applied, but also much criticized (see REYNOLDS and TOPSOM (1984); HOEFNAGEL, OOSTERBEEK and WEPSTER (1984); CHARTON (1984); SWAIN (1984); HANSCH, LEO, and TAFT (1991)).

See also:
-symbol ("eta") definition
synchronous definition
Temperature definition
symproportionation definition
synthesis for testability definition
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