کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1327591 | 977490 | 2006 | 8 صفحه PDF | دانلود رایگان |
The reaction between dodecamethylcyclohexasilane (Me2Si)61 and 9,10-phenanthraquinone 2 has been studied by means of CIDNP method. In the polar solvent, the photodecomposition of 1 is shown to proceed via triplet radical ion pair formed by phenanthraquinone radical anion and cyclohexasilane radical cation. Its transformation leads to the cyclic reaction product – 10-membered cyclic dioxahexasilecine 8 – formally resulting from the addition of linear 1,6-silicon-centered biradical Si(Me)2–Si4(Me2)4-(Me)2Si to CO bonds of quinone. Product 8 is unstable, after several hours it converts to dioxasilole 4 via sequential repeated elimination of dimethylsilylenes 3.
Photoinduced interaction of dodecamethylcyclohexasilane cyclo-(Me2Si)61 and 9,10-phenanthraquinone 2 has been shown to proceed via triplet pair of corresponding radical ions resulting in an unusual unstable 10-membered cyclic dioxahexasilecine 8.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 691, Issue 7, 15 March 2006, Pages 1411–1418