English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Chalcogenides by Reduction of their Dioxides in Ultra-Alkaline Media

Albrecht, R., & Ruck, M. (2021). Chalcogenides by Reduction of their Dioxides in Ultra-Alkaline Media. Angewandte Chemie, International Edition in English, 60, 22570-22577. doi:10.1002/anie.202107642.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Albrecht, Ralf1, Author
Ruck, Michael2, Author           
Affiliations:
1External Organizations, ou_persistent22              
2Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863444              

Content

show
hide
Free keywords: -
 Abstract: The reaction of chalcogen dioxides ChO(2) (Ch=Se, Te) with As2O3 in a 30 molar KOH hydroflux at about 200 degrees C yielded crystals of potassium trichalcogenides K(2)Ch(3) with dimensions up to 2 cm. Arsenic trioxide acts as electron donor and is oxidized to arsenate(V). The new heterochalcogenide anion (TeSe2)(2-) formed when starting from SeO2 and TeO2 simultaneously. The compound K2TeSe2 crystallizes isostructural to K2S3 and K2Se3. 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 and UV/Vis spectroscopy. Depending on the concentration of As2O3, colorless monochalcogenide Ch(2-) or orange Se-2(2-) and purple Te-2(2-) anions are dominating the solutions.

Details

show
hide
Language(s): eng - English
 Dates: 2021-08-102021-08-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000692648800001
DOI: 10.1002/anie.202107642
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Angewandte Chemie, International Edition in English
  Abbreviation : Angew. Chem., Int. Ed. Engl.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 60 Sequence Number: - Start / End Page: 22570 - 22577 Identifier: ISSN: 0570-0833
CoNE: https://pure.mpg.de/cone/journals/resource/0570-0833