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Studies of reaction of tetramethylthiourea with hydrogen peroxide: evidence of formation of tetramethylthiourea monoxide as a key intermediate of the reactionстатья
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Дата последнего поиска статьи во внешних источниках: 20 февраля 2024 г.
- Авторы: Dereven’kov Ilia A., Ivlev Pavel A., Salnikov Denis S., Bischin Cristina, Attia Amr A.A., Silaghi-Dumitrescu Radu, Makarov Sergei V.
- Журнал: Journal of Sulfur Chemistry
- Том: 38
- Номер: 5
- Год издания: 2017
- Издательство: Taylor & Francis
- Местоположение издательства: United Kingdom
- Первая страница: 496
- Последняя страница: 509
- DOI: 10.1080/17415993.2017.1321650
- Аннотация: The reaction between tetramethylthiourea (TMTU) and hydrogen peroxide was studied by UV–VIS spectroscopy, ESI mass spectrometry, 1H NMR, cyclic voltammetry and surface-enhanced Raman scattering. We found that the reaction includes two consecutive steps, that is, (i) an oxidation of TMTU to TMTU monoxide (TMTMO) and (ii) further oxidation of TMTU monoxide to tetramethylurea (TMU) and sulfate. The second step is complex and seems to include extrusion of sulfur monoxide (SO). Density functional theory calculations were employed on tetramethylthiourea oxide models in order to underline differences between monoxide and di- and trioxides. Calculations predict that the TMTMO structure can be best explained as an adduct of thiourea with an oxygen atom (═S–>O).
- Добавил в систему: Ивлев Павел Андреевич