This confirms that the empirical r value has a definitive physical meaning, i.e. a measure of the resonance interaction between the cationic center and the aryl moiety. Copyright 1998 John Wiley & Sons, Ltd.doi:10.1002/(SICI)1099-1395(199812)11:12<857::AID-POC81>3.0.CO;2-1Kazuhide ...
This can result in the reversal of the order of the Arrhenius activation energies for different systems relative to the order of the threshold energies, meaning that conclusions about relative stabilities of large molecules should be based not on the thermal activation energies but rather on actual ...