Infrared spectroscopic studies of hydrogenated silicon clusters -: Guiding the search for Si2Hx species in the Circumstellar Envelope of IRC+10216

被引：31

作者：

Kaiser, RI ^{[1
]}

Osamura, Y

机构：

[1] Univ Hawaii, Dept Chem, Honolulu, HI 96822 USA

[2] Open Univ, Dept Phys & Astron, Milton Keynes MK7 6AA, Bucks, England

[3] Rikkyo Univ, Dept Chem, Tokyo 1718501, Japan

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 432卷 / 02期

关键词：

molecular data; molecular processes; astrochemistry;

D O I：

10.1051/0004-6361:20040305

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Silicon-bearing species Si2Hx ( x = 1 - 6) are probable candidates in the circumstellar envelope of IRC+ 10216. We have observed several fundamentals of new silicon-containing radicals Si2H3 and Si2H5 in addition to the well-known Si2H4 and Si2H6 species from infrared spectroscopy in low temperature silane matrices at 10 K. Several infrared bands identify the Si2Hx species and can be used to search for these molecules in the circumstellar envelope of IRC+ 10216. These infrared bands are confirmed by ab initio quantum chemical calculation as well as via corresponding infrared spectra detected for the deuterated species Si2Dx.

引用

页码：559 / 566

页数：8