Dithiobenzoic acid
Dithiobenzoic acid is the organosulfur compound with the formula C6H5CS2H. It is a dithiocarboxylic acid, an analogue of benzoic acid, but more acidic and deeply colored.It can be prepared by sulfiding benzal chloride:
It also arises by the reaction of the Grignard reagent phenylmagnesium bromide with carbon disulfide, followed by acidification:
It is about 100x more acidic than benzoic acid. Its conjugate base, dithiobenzoate, undergoes S-alkylation to give dithiocarboxylate esters. Similarly, dithiobenzoate reacts with "soft" metal salts to give complexes, e.g. Fe3 and Ni2.
Chlorination of dithiobenzoic acid gives the thioacyl chloride C6H5CCl.
File:DTBNIT11.png|thumb|244px|left|Structure of the trimer 3.
