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Selenirenium and Tellurirenium Ions
Author(s) -
Poleschner Helmut,
Seppelt Konrad
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200801691
Subject(s) - chalcogen , tellurium , selenium , ion , alkyl , crystallography , chemistry , ring (chemistry) , bond length , organic chemistry , crystal structure
Canted chalcogens : Relatively stable selenirenium salts (R 1 2 C 2 SeR) + X − (R 1 = tert ‐alkyl) are prepared by reaction of RSe + X − with acetylenes; the bond angle at selenium is only 38°. Highly unstable tellurirenium salts (R 1 2 C 2 TePh) + X − from PhTe + X − and di‐ tert ‐alkylacetylenes have a bond angle at tellurium of 34° (see picture). These three‐membered‐ring cations were experimentally and theoretically investigated.