{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Albrecht R"],"funding":["Deutsche Forschungsgemeinschaft"],"pagination":["22570-22577"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC8518872"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["60(41)"],"pubmed_abstract":["The reaction of chalcogen dioxides ChO<sub>2</sub> (Ch=Se, Te) with As<sub>2</sub> O<sub>3</sub> in a 30 molar KOH hydroflux at about 200 °C yielded crystals of potassium trichalcogenides K<sub>2</sub> Ch<sub>3</sub> with dimensions up to 2 cm. Arsenic trioxide acts as electron donor and is oxidized to arsenate(V). The new heterochalcogenide anion (TeSe<sub>2</sub> )<sup>2-</sup> formed when starting from SeO<sub>2</sub> and TeO<sub>2</sub> simultaneously. The compound K<sub>2</sub> TeSe<sub>2</sub> crystallizes isostructural to K<sub>2</sub> S<sub>3</sub> and K<sub>2</sub> Se<sub>3</sub> . The unexpected redox reaction as well as the precipitation of hygroscopic compounds from an aqueous solution are attributed to a strongly reduced activity of water. The reactions were studied by Raman a"],"journal":["Angewandte Chemie (International ed. in English)"],"pubmed_title":["Chalcogenides by Reduction of their Dioxides in Ultra-Alkaline Media."],"pmcid":["PMC8518872"],"funding_grant_id":["438795198"],"pubmed_authors":["Ruck M","Albrecht R"],"additional_accession":[]},"is_claimable":false,"name":"Chalcogenides by Reduction of their Dioxides in Ultra-Alkaline Media.","description":"The reaction of chalcogen dioxides ChO<sub>2</sub> (Ch=Se, Te) with As<sub>2</sub> O<sub>3</sub> in a 30 molar KOH hydroflux at about 200 °C yielded crystals of potassium trichalcogenides K<sub>2</sub> Ch<sub>3</sub> with dimensions up to 2 cm. Arsenic trioxide acts as electron donor and is oxidized to arsenate(V). The new heterochalcogenide anion (TeSe<sub>2</sub> )<sup>2-</sup> formed when starting from SeO<sub>2</sub> and TeO<sub>2</sub> simultaneously. The compound K<sub>2</sub> TeSe<sub>2</sub> crystallizes isostructural to K<sub>2</sub> S<sub>3</sub> and K<sub>2</sub> Se<sub>3</sub> . The unexpected redox reaction as well as the precipitation of hygroscopic compounds from an aqueous solution are attributed to a strongly reduced activity of water. The reactions were studied by Raman a","dates":{"release":"2021-01-01T00:00:00Z","publication":"2021 Oct","modification":"2025-05-29T19:36:28.195Z","creation":"2025-05-29T19:36:28.195Z"},"accession":"S-EPMC8518872","cross_references":{"pubmed":["34375499"],"doi":["10.1002/anie.202107642"]}}