Absolute hardness as a measure of aromaticity

Absolute hardness: companion parameter to absolute electronegativity

Robert G. Parr, Ralph G. Pearson · Journal of the American Chemical Society · 1983 · 7.6K citations

Engineering, Altmetric Attention Score, Bibliometrics +16

Absolute electronegativity and hardness correlated with molecular orbital theory

Ralph G. Pearson · Proceedings of the National Academy of Sciences · 1986 · 1.7K citations · Full text

Engineering, Physics, Natural Sciences +11

Recent advances in the concept of hard and soft acids and bases

Ralph G. Pearson · Journal of Chemical Education · 1987 · 1.4K citations

Graph theory and molecular orbitals. 19. Nonparametric resonance energies of arbitrary conjugated systems

İvan Gutman, M. Milun, Nenad Trinajstić · Journal of the American Chemical Society · 1977 · 532 citations

Altmetrics, Molecular Sciences, Engineering +15

A new definition of Dewar-type resonance energies

Jun‐ichi Aihara · Journal of the American Chemical Society · 1976 · 513 citations

Engineering, Altmetric Attention Score, Bibliometrics +17