کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1327553 | 977489 | 2009 | 9 صفحه PDF | دانلود رایگان |

The reaction of fluorosilanes XYSiF2 (X = Y = F; X = F, Y = Ph; X = Ph, Y = Me) with diethanolamines and their O-trimethylsilyl derivatives affords novel Si-fluoro substituted quasisilatranes 3, 5 and 9. These compounds were characterized by the multinuclear NMR spectroscopy and X-ray diffraction analysis. Experimental and theoretically calculated electron density distribution functions in crystal structure of 9 have shown that the N → Si coordination bond corresponds to polar bond with pronounced ionic contribution. Calculated N → Si bond order in the compound 9 does not exceed 1/3 of the normal Si–N bond. A strong N → Si coordination bond exists in compounds 3, 5 and 9 the length of which varies in the range 1.98–2.175 Å.
The title compounds were obtained by the reaction of fluorosilanes XYSiF2 with diethanolamines or their O-trimethylsilyl derivatives. The quasisilatranes 3, 5 and 9 were characterized by the multinuclear NMR spectroscopy, X-ray diffraction method and quantum chemical calculations.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 694, Issue 5, 1 March 2009, Pages 607–615