Thermodynamic parameters of nine-membered intramolecular hydrogen bonding between carbonyl groups and phenolic hydroxyl groups of 2-arylmethylphenols having methoxycarbonyl, dimethylcarbamoyl, and formyl groups were determined by variable temperature 1H NMR studies and van't Hoff analysis. The enthalpy of the hydrogen bonding was related to the electron-withdrawing ability of the substituents on the
通过可变温度1 H NMR研究和van't Hoff分析,确定了具有甲氧基羰基,二甲基氨基甲酰基和甲酰基的2-芳基甲基苯酚的羰基和酚羟基之间的九元分子内氢键的热力学参数。氢键的焓与苯酚上的取代基的吸电子能力和羰基的碱性有关。氢键的熵损失取决于酚基团的旋转自由度。