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Fused Tricyclic Disilenes with Highly Strained SiSi Double Bonds: Addition of a SiSi Single Bond to a SiSi Double Bond
Author(s) -
Tanaka Ryoji,
Iwamoto Takeaki,
Kira Mitsuo
Publication year - 2006
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.200602214
Subject(s) - double bond , single bond , chemistry , tricyclic , crystallography , silicon , stereochemistry , group (periodic table) , polymer chemistry , organic chemistry
Internal fusion : The stable fused tricyclic tetraalkyl disilenes cis ‐ 1 and trans ‐ 1 were synthesized as yellow and red‐purple crystals, respectively (see picture). X‐ray analysis has shown that the geometry around the SiSi bond in trans ‐ 1 is unusually distorted, but is rather normal in cis ‐ 1 . Disilene trans ‐ 1 isomerizes stereospecifically to a tetracyclic isomer by unprecedented addition of a SiSi single bond to a SiSi double bond.