Polyalkynes capped by sulfur and selenium

• Verfasst von: Werz, Daniel B. [VerfasserIn]
• Verfasst von: Gleiter, Rolf [VerfasserIn]
• Titel: Polyalkynes capped by sulfur and selenium
• Verf.angabe: Daniel B. Werz and Rolf Gleiter
• E-Jahr: 2003
• Jahr: 11/07/2003
• Umfang: 6 S.
• Fussnoten: Gesehen am 28.10.2020
• Titel Quelle: Enthalten in: The journal of organic chemistry
• Ort Quelle: [S.l.] : American Chemical Society, 1936
• Jahr Quelle: 2003
• Band/Heft Quelle: 68(2003), 24, Seite 9400-9405
• ISSN Quelle: 1520-6904
• DOI: doi:10.1021/jo0352171
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1736886134

Abstract

The synthesis of sulfur- and selenium-capped polyalkynes with two to four triple bonds was achieved. As starting materials the bis(trimethylsilyl)-protected polyalkynes were used, which were treated with MeLi/LiBr. The reaction of the resulting lithium salts with thiocyanatomethane and selenium/methyl iodide afforded 2(n) and 3(n), respectively. Spectroscopic (PE and UV) and quantum chemical investigations show significant interaction between the chalcogen atoms. The structure of 3(4) was investigated in the solid state, showing relatively short intermolecular Se···Se interactions.