139015-76-2Relevant academic research and scientific papers
Silicon Compounds with Strong Intramolecular Steric Interactions, 47. - Trisilacyclobutanimines
Weidenbruch, Manfred,Hamann, Joerg,Pohl, Siegfried,Saak, Wolfgang
, p. 1043 - 1046 (2007/10/02)
Treatment of hexa-tert-butylcyclotrisilane (4) with aryl isocyanides leads to the trisilacyclobutanimines 5-8.Reaction of the 1,4-diisocyanobenzene derivative 7 with two molecules of 4 leads to the double insertion product 9, the X-ray structure analysis of which shows the Si3CN framework atoms to be almost exactly coplanar.The planes of the two four-membered rings are strictly parallel whereas the linking phenylene group forms a 71.6 deg angle with these planes.The most striking features of these and of related compounds are their dark colours with longest wavelength absorption between 500 and 540 nm.Key Words: Trisilacyclobutanimines / Cyclotrisilane, hexa-tert-butyl / Isocyanide insertion reactions
