A selenonic acid is an organoselenium compound containing the −SeO3H functional group. The formula of selenonic acids is R−Se(=O)2−OH, where R is organyl group. Selenonic acids are the selenium analogs of sulfonic acids. Examples of the acid are rare. Benzeneselenonic acid PhSeO3H (where Ph stands for phenyl) is a white solid. It can be prepared by the oxidation of benzeneselenol.
See also Selenenic acid Seleninic acid
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