Thermodynamic properties of the methylpyridines. Part 1. Heat capacity measurements for 4-methylpyridine betweenT = 6.4 K andT = 18.6 K, resolution of low-temperature contributions, and reconciliation of calorimetrically and spectroscopically derived standard entropies

Abstract Heat capacities and enthalpy increments between the temperatures 6.4 K and 320 K were determined for 4-methylpyridine (Chemical Abstract registry number 108-89-4) by adiabatic calorimetry. Results for temperatures ≥ 20 K were found to be in excellent accord with literature values; however, accord for T