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Beach, D.B.; Eyermann, C.J.; Smit, S.P.; Xiang, S.F.; Jolly, W.L., Applications of the equivalent cores approximation. The determination of proton affinities and isocyanide-to-nitrile isomerization energies from core binding energies, J. Am. Chem. Soc., 1984, 106, 536. [all data]