Next Mambatta Haritha, Sherin S. Ameena, and Cherumuttathu H. Suresh (2025) | Substituent Effects on NMR Chemical Shifts and Cyclic Hydrogen Bonding in 2‑Pyridone Dimers: An Accurate Approach to Hammett Constant Determination Linking Structure, Energetics, and Electron Distribution | Journal of Organic Chemistry