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首页> 外文期刊>Journal of Molecular Spectroscopy >Emission spectra of 1,2,3-butatriene cation H_2CCCCH_2~+ by hollow-cathode glow discharge and extended negative glow discharge
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Emission spectra of 1,2,3-butatriene cation H_2CCCCH_2~+ by hollow-cathode glow discharge and extended negative glow discharge

机译：空心阴极辉光放电和扩展负辉光放电的1,2,3-丁三烯阳离子H_2CCCCH_2〜+发射光谱

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摘要

The 1,2,3-butatriene cation H_2CCCCH_2~+ was observed with a monochromator in the optical emission from a hollow-cathode glow discharge and an extended negative glow discharge. This cation was effectively produced by the discharge of 2-butyne (H_3C-C≡C-CH_3), although no other organic species worked as its precursors. The observed emission bands were assigned to the ~2B_(3u)–X~2B_(2g) electronic transition on the basis of the chemical and physical investigations for the production and the reported photoelectron spectrum of H_2CCCCH_2. The frequency of the electronic transition’s v = 0–0 origin band was evaluated to be 20381 cm~(-1) from the emission band, which enables the comparison of the v = 0–0 absorption feature of H_2CCCCH_2~+ with diffuse interstellar bands.
机译：用单色仪在空心阴极辉光放电和扩展的负辉光放电的光发射中观察到1,2,3-丁三烯阳离子H_2CCCCH_2〜+。尽管没有其他有机物质作为其前体，但该阳离子是通过释放2-丁炔（H_3C-C≡C-CH_3）有效产生的。根据对H_2CCCCH_2的产生和报告的电子光谱的化学和物理研究，将观察到的发射带分配给〜2B_（3u）–X〜2B_（2g）电子跃迁。电子跃迁的v = 0-0原始带的频率被估计为与发射带相距20381 cm〜（-1），这使得H_2CCCCH_2〜+的v = 0-0吸收特征与弥散星际带的比较成为可能。

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