A Photoionization Study on the Detection of 1‐Sila Glycolaldehyde (HSiOCH 2 OH), 2‐Sila Acetic Acid (H 3 SiCOOH), and 1,2‐Disila Acetaldehyde (HSiOSiH 3 )
A Photoionization Study on the Detection of 1‐Sila Glycolaldehyde (HSiOCH 2 OH), 2‐Sila Acetic Acid (H 3 SiCOOH), and 1,2‐Disila Acetaldehyde (HSiOSiH 3 )
复制标题
光电离检测1-西拉乙醛(HSiOCH 2 OH)、2-西拉乙酸(H 3 SiCOOH)和1,2-二西拉乙醛(HiOSiH 3 )的研究
DOI：
10.1002/chem.202004863
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Kaiser, Ralf I.
中科院分区：
文献类型：
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作者：
Chandra, Sankhabrata;Eckhardt, André K.;Turner, Andrew M.;Tarczay, György;Kaiser, Ralf I.
通过经典红外光谱法识别带有多个官能团的硅取代的复杂有机物具有挑战性，因为官能团的基团频率通常重叠。光电离（PI）反射飞行时间质谱（ReTOF-MS）结合程序升温脱附（TPD）具有一定的优势，因为分子在从基质升华到气相后，基于不同的电离能和升华温度进行鉴定。在这项研究中，我们揭示了1-硅乙醇醛的检测（HSiOCH 2 OH），2-sila-乙酸（H3 SiCOOH）和1，2-二硅杂-乙醛（H3 SiSiHO）-众所周知的乙醇醛的硅类似物（HCOCH 2 OH）、乙酸（H3CCOOH）和乙醛（H3CCHO），在硅烷（SiH 4）中制备后的气相中-二氧化碳冰暴露于高能电子并使冰内形成的中性反应产物升华为气相。
The identification of silicon‐substituted, complex organics carrying multiple functional groups by classical infrared spectroscopy is challenging because the group frequencies of functional groups often overlap. Photoionization (PI) reflectron time‐of‐fight mass spectrometry (ReTOF‐MS) in combination with temperature‐programmed desorption (TPD) holds certain advantages because molecules are identified after sublimation from the matrix into in the gas phase based on distinct ionization energies and sublimation temperatures. In this study, we reveal the detection of 1‐silaglycolaldehyde (HSiOCH2OH), 2‐sila‐acetic acid (H3SiCOOH), and 1,2‐disila‐acetaldehyde (H3SiSiHO)—the silicon analogues of the well‐known glycolaldehyde (HCOCH2OH), acetic acid (H3CCOOH), and acetaldehyde (H3CCHO), in the gas phase after preparation in silane (SiH4)–carbon dioxide ices exposed to energetic electrons and subliming the neutral reaction products formed within the ices into the gas phase.