SALAMA , S.B, and S. WASIF. “Weak Complexes of S and Se: Interaction and Complex Formation of Iodide Ions With Some Arenesulfonyl Chlorides”. Asian Journal of Chemistry, vol. 6, no. 2, June 2010, pp. 381-8, https://asianpubs.org/index.php/ajchem/article/view/24557.