Infrared spectroscopic studies of hydrogenated silicon clusters - guiding the search for Si₂H_x species in the Circumstellar Envelope of IRC+10216

Kaiser, R. I. and Osamura, Y. (2005). Infrared spectroscopic studies of hydrogenated silicon clusters - guiding the search for Si₂H_x species in the Circumstellar Envelope of IRC+10216. Astronomy & Astrophysics, 432(2) pp. 559–566.

DOI: https://doi.org/10.1051/0004-6361:20040305

Abstract

Silicon-bearing species Si₂H_x (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 Si₂H_x 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 Si₂D_x.

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About

• Item ORO ID
• 18442
• Item Type
• Journal Item
• ISSN
• 1432-0746
• Keywords
• molecular data; molecular processes; astrochemistry
• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Copyright Holders
• © 2005 ESO
• Depositing User
• Colin Smith