Substituted selenourea–tellurium tetrahalide adducts: Precursors to selenium–tellurium alloys
✍ Scribed by Hema M. K. K. Pathirana; Ralph A. Zingaro; Edward A. Meyers; Joseph H. Reibenspies; D. Carl Dufner
- Book ID
- 102235251
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 491 KB
- Volume
- 1
- Category
- Article
- ISSN
- 1042-7163
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✦ Synopsis
Abstract
N,N‐Dimethylselenourea (DMSeU) yields, with TeX~4~ (X = Cl or Br), a variety of compounds having bonds from selenium to tellurium. Excluding molecules of solvation these compounds display the following stoichiometries: [(DMSeU)~4~Te]X~2~, (DMSeU)~3~(TeX~4~)~2~, and (DMSeU)~2~Te~2~X~6~. Tetramethylselenourea (TMSeU) gives, with TeBr~4~, crystals of (TMSeU)~2~TeBr~4~. Both the carbon–selenium and tellurium–halogen bonds undergo hydrolysis under mild conditions to yield precipitates that are alloys of selenium and tellurium. Thus, this group of compounds affords a new approach to the synthesis of selenium–tellurium alloys. Some of the properties of these compounds, as well as the crystal structure of [(DMSeU)~4~Te]Cl~2~, are described in this article.