If we replace two oxygen in $\ce{-COOH}$ what is the name of the compound we get?
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$\begingroup$ Does that functional group even exist? If so, do you have an example of a molecule containing it? $\endgroup$ – Michiel Dec 10 '13 at 17:02
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1$\begingroup$ Yes the compound exists, it is formed when grignard reagent reacts with thioxide. $\endgroup$ – user2619 Dec 10 '13 at 17:46
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Is a dithioic acid.
For example, a benzene with two -CSSH hubstituents in 1, 2 positions is a benzene-1,2-dicarbodithioic acid.
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3$\begingroup$ Here's a neat reference containing all sorts of information about carboxylic acid analogues contaning heavier chalcogens. $\endgroup$ – Nicolau Saker Neto Dec 10 '13 at 22:39
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$\begingroup$ isn't it just a thioic acid? that thio there means sulfur so why is it a dithioic acid instead of just thioic acid? $\endgroup$ – Caters Aug 1 '14 at 18:42
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1$\begingroup$ @Caters, likely because '-thioic acid' would imply replacement of only one of the oxygens with a sulfur, instead of both. $\endgroup$ – hBy2Py Jul 1 '15 at 19:31
