The viscous liquid 1,2-benzenedithiol is a common chelating agent in coordination chemistry. It is also useful for synthesizing many organosulfur compounds. It was first prepared in 1925 by P. C. Guha and M. N. Chakladar who diazotized 2-aminobenzenethiol. Today it is made by ortho-lithiating benzenethiol followed by sulfidation (D. M. Giolando and K. Kirschbaum, 1992).
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