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1,2,3,4‐Tetra‐ tert ‐butyl‐4‐trimethylsilyl‐4‐sila‐2‐cyclobuten‐1‐yl: A Quantum Mechanical and ESR Study
Author(s) -
Maier Günther,
Kratt Armin,
Schick Andreas,
Reisenauer Hans Peter,
Barbosa Frédérique,
Gescheidt Georg
Publication year - 2000
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/1099-0690(200004)2000:7<1107::aid-ejoc1107>3.0.co;2-8
Subject(s) - chemistry , tetra , trimethylsilyl , photochemistry , medicinal chemistry , radical , polymer chemistry , organic chemistry
Trisilane 7 has been synthesized as a potential photochemical precursor of tetra‐ tert ‐butylsilatetrahedrane ( 5 ) and/or tetra‐ tert ‐butylsilacyclobutadiene ( 6 ). Astonishingly, only one Si,Si bond is broken upon irradiation of 7 and the silacyclobutenyl radical 9 can be identified as the reaction product. The structure of radical 9 , which in the absence of oxygen is persistent even at room temperature, has been elucidated by comparison of its experimental and calculated ESR spectra.