Reactivity of Small Oxoacids of Sulfur

Oxidation of sulfide to sulfate is known to consist of several steps. Key intermediates in this process are the so-called small oxoacids of sulfur (SOS)&#8212;sulfenic HSOH (hydrogen thioperoxide, oxadisulfane, or sulfur hydride hydroxide) and sulfoxylic S(OH)<sub>2</sub> acids. Sulf...

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Main Authors: Sergei V. Makarov, Attila K. Horváth, Anna S. Makarova
Format: Article
Language:English
Published: MDPI AG 2019-07-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/24/15/2768
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author Sergei V. Makarov
Attila K. Horváth
Anna S. Makarova
author_facet Sergei V. Makarov
Attila K. Horváth
Anna S. Makarova
author_sort Sergei V. Makarov
collection DOAJ
description Oxidation of sulfide to sulfate is known to consist of several steps. Key intermediates in this process are the so-called small oxoacids of sulfur (SOS)&#8212;sulfenic HSOH (hydrogen thioperoxide, oxadisulfane, or sulfur hydride hydroxide) and sulfoxylic S(OH)<sub>2</sub> acids. Sulfur monoxide can be considered as a dehydrated form of sulfoxylic acid. Although all of these species play an important role in atmospheric chemistry and in organic synthesis, and are also invoked in biochemical processes, they are quite unstable compounds so much so that their physical and chemical properties are still subject to intense studies. It is well-established that sulfoxylic acid has very strong reducing properties, while sulfenic acid is capable of both oxidizing and reducing various substrates. Here, in this review, the mechanisms of sulfide oxidation as well as data on the structure and reactivity of small sulfur-containing oxoacids, sulfur monoxide, and its precursors are discussed.
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spelling doaj.art-51573e1797044e0fae25b22017ff71592022-12-21T23:23:52ZengMDPI AGMolecules1420-30492019-07-012415276810.3390/molecules24152768molecules24152768Reactivity of Small Oxoacids of SulfurSergei V. Makarov0Attila K. Horváth1Anna S. Makarova2State University of Chemistry and Technology, Sheremetevskiy str. 7, 153000 Ivanovo, RussiaDepartment of Inorganic Chemistry, Institute of Chemistry, Faculty of Sciences, University of Pécs, Ifjúság u. 6, H-7624, HungaryG. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Academicheskaya str., 1, 153045 Ivanovo, RussiaOxidation of sulfide to sulfate is known to consist of several steps. Key intermediates in this process are the so-called small oxoacids of sulfur (SOS)&#8212;sulfenic HSOH (hydrogen thioperoxide, oxadisulfane, or sulfur hydride hydroxide) and sulfoxylic S(OH)<sub>2</sub> acids. Sulfur monoxide can be considered as a dehydrated form of sulfoxylic acid. Although all of these species play an important role in atmospheric chemistry and in organic synthesis, and are also invoked in biochemical processes, they are quite unstable compounds so much so that their physical and chemical properties are still subject to intense studies. It is well-established that sulfoxylic acid has very strong reducing properties, while sulfenic acid is capable of both oxidizing and reducing various substrates. Here, in this review, the mechanisms of sulfide oxidation as well as data on the structure and reactivity of small sulfur-containing oxoacids, sulfur monoxide, and its precursors are discussed.https://www.mdpi.com/1420-3049/24/15/2768hydrogen sulfidesulfoxylic acidhydrogen thioperoxidesulfur monoxide
spellingShingle Sergei V. Makarov
Attila K. Horváth
Anna S. Makarova
Reactivity of Small Oxoacids of Sulfur
Molecules
hydrogen sulfide
sulfoxylic acid
hydrogen thioperoxide
sulfur monoxide
title Reactivity of Small Oxoacids of Sulfur
title_full Reactivity of Small Oxoacids of Sulfur
title_fullStr Reactivity of Small Oxoacids of Sulfur
title_full_unstemmed Reactivity of Small Oxoacids of Sulfur
title_short Reactivity of Small Oxoacids of Sulfur
title_sort reactivity of small oxoacids of sulfur
topic hydrogen sulfide
sulfoxylic acid
hydrogen thioperoxide
sulfur monoxide
url https://www.mdpi.com/1420-3049/24/15/2768
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