Grybat Andreas, Boomgaarden Sven, Saak Wolfgang, Marsmann Heinrich, Weidenbruch Manfred
Fachbereich Chemie der Universität, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg (Germany), Fax: (+49) 441-798-3352.
Fachbereich Chemie der Universität (GH), Warburger Strasse 100, D-33095 Paderborn (Germany).
Angew Chem Int Ed Engl. 1999 Jul 12;38(13-14):2010-2012. doi: 10.1002/(SICI)1521-3773(19990712)38:13/14<2010::AID-ANIE2010>3.0.CO;2-T.
The formal [4+1] cycloaddition of the chalcogens S, Se, and Te to the tetrasilabuta-1,3-diene 1 furnishes the molecules 2-4, the first five-membered rings with endocyclic Si-Si double bonds. The new compounds are thermally stable and chemically inert. However, 4 is light-sensitive and decomposes in daylight with deposition of tellurium. R=2,4,6-iPrCH.
硫族元素硫、硒和碲与四硅丁-1,3-二烯1发生的形式上的[4+1]环加成反应生成了分子2-4，即首个含有环内硅-硅双键的五元环。这些新化合物热稳定性好且化学性质惰性。然而，4对光敏感，在日光下会分解并析出碲。R=2,4,6-异丙基环己基。
