کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1327793 | 977506 | 2009 | 7 صفحه PDF | دانلود رایگان |

The first representatives of aryloxy-trimethylsilatranes, C6H5OSi[OCH(CH3)CH2]3N, of aryloxy-carbasilatranes, C6H5OSi(CH2CH2CH2)(OCH2CH2)2N, and a number of novel 3,7,10-trimethylsilatranes (RSi[OCH(CH3)CH2]3N) and carbasilatranes (RSi(CH2CH2CH2)(OCH2CH2)2N) have been prepared and characterised, both structurally and by NMR spectroscopy. The influence of various Si substituents (R = alkyl, aryl, alkoxy and aryloxy) as well as the influence of the substitution in the skeleton of the trimethylsilatranes and carbasilatranes on the chemical shift in the 29Si, 1H and 13C NMR spectra has been investigated. The crystal structures of both diastereomers of phenyl-3,7,10-trimethylsilatrane and of the symmetrical isomer of p-tolyl-3,7,10-trimethylsilatrane were determined by X-ray diffraction after separation of the diastereomers by means of HPLC. All three crystal structures are centrosymmetric.
A number of novel 3,7,10-trimethylsilatranes (RSi[OCH(CH3)CH2]3N) and (RSi(CH2CH2CH2) (OCH2CH2)2N) carbasilatranes have been prepared and characterised, both structurally and by NMR spectroscopy. The crystal structures of both diastereomers of phenyl-3,7,10-trimethylsilatrane and of the symmetrical isomer of p-tolyl-3,7,10-trimethylsilatrane have been determined.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 694, Issue 1, 1 January 2009, Pages 14–20