Heats of formation of multi‐substituted positive ions of organic species

This is the authors' abstract. We don't add key points for this paper.

The difference (ΔΔfH°) between heats of formation of many multi‐substituted odd‐ and even‐electron positive ions can be described by a linear equation: ΔΔfH° = A + Bm, where m is the number of substituents or ligands, relative to the unsubstituted reference ion, and m = 1, 2 or 3; A and B are the intercept and slope, respectively. The correlation quality for 59 types of odd‐ and 26 types of even‐electron ions, which involve C, Si, Sn, H, F, Cl, Br, I, O, S, N and P atoms, was analyzed. Unknown heats of formation of related ions and the proton affinities of some organic molecules were predicted using the linear equation.