The Saccharinate Anion: a Versatile and Fascinating Ligand in Coordination Chemistry
نویسنده
چکیده
Saccharin (o-sulfobenzimide; 1,2-benzothiazole-3(2H)-one 1,1 dioxide; Hsac, Figure 1) is one of the best known and most widely used artificial sweetening agents. Initially, investigation of the interaction of saccharin with different biologically relevant cations attracted great interest due to the suspected carcinogenicity of this compound which, notwithstanding, was recently definitively ruled out. However, simultaneously these studies show that its coordination chemistry is very interesting and versatile as the saccharinate anion, obtained by deprotonation of the NH group, offers different coordination sites to metallic centers, i.e. one N, one O (carbonylic) and two O (sulfonic) atoms.
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