DFT study of N-substituted sulfamic acid derivatives acidity in aqueous media and gas phase

Sulfamic acids are very important compounds with a little consideration in the literature that have wide range of applications in our life. Various N-alkyl and Ncycloalkyl sulfamic acids were selected and their acidity was calculated in gas and aqueous media. pKa values were obtained with the use of two thermodynamic cycles that dier in the reference molecule which was used with them. Obtained pKa values show strong acidity for sulfamic acids. We used density functional theory for all calculations.