کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9575226 | 1504344 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Infrared spectroscopic detection of the methylsilyl (CH3SiH2, X2Aâ²) and the silylmethyl (CH2SiH3, X2Aâ²) radicals and their partially deuterated counterparts in low temperature matrices
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Both the methylsilyl, CH3SiH2(X2Aâ²), and the silylmethyl, SiH3CH2(X2Aâ²), together with their partially deuterated isotopomers were identified for the first time via infrared spectroscopy in low temperature silane-methane matrices at 10 K upon exposure of the matrices with mono energetic electrons. Three fundamentals at 654 cmâ1 (ν8), 1414 cmâ1 (ν12), and 1251 cmâ1 (ν5) (methylsilyl) and one absorption at 645 cmâ1 (ν8) (silylmethyl) were detected; these assignments were confirmed by identifying also partially deuterated radicals through their absorptions at 781 cmâ1 (ν7), 1415 cmâ1 (ν12), 1419 cmâ1 (ν4), and 1546 cmâ1 (ν11) (d2-methylsilyl, CH3SiD2) and 582 cmâ1 (ν8), 749 cmâ1 (ν5), and 771 cmâ1 (ν13) (d3-silylmethyl, SiD3CH2) in d4-silane-methane matrices. Since both silane and methane have been observed in the circumstellar envelope of the carbon star IRC+10216, our investigations assist in future infrared spectroscopic, astronomical searches for these species in interstellar space. Likewise, the knowledge of the infrared absorption features might help to follow the chemical evolution of organo-silicon CVD process via time resolved infrared spectroscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 315, Issues 1â2, 8 August 2005, Pages 41-52
Journal: Chemical Physics - Volume 315, Issues 1â2, 8 August 2005, Pages 41-52
نویسندگان
David S. Sillars, Chris. J. Bennett, Yoshihiro Osamura, Ralf I. Kaiser,