Arenas Benjamin E, Gruet Sébastien, Steber Amanda L, Giuliano Barbara M, Schnell Melanie
Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany.
Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse 1, D-85748 Garching, Germany.
Phys Chem Chem Phys. 2017 Jan 18;19(3):1751-1756. doi: 10.1039/c6cp06297k.
We report here further spectroscopic investigation of the astrochemically relevant molecule i-propyl cyanide. We observed and analysed the rotational spectra of the ground state of the molecule and ten vibrationally excited states with energies between 180-500 cm. For this, we used a segmented W-band spectrometer (75-110 GHz) and performed the experiments under room temperature conditions. This approach thus provides access to high-resolution, pure rotational data of vibrational modes that occur in the far-infrared fingerprint region, and that can be difficult to access with other techniques. The obtained, extensive data set will support further astronomical searches and identifications, such as in warmer regions of the interstellar space where contributions from vibrationally excited states become increasingly relevant.
我们在此报告对天体化学相关分子异丙基氰进行的进一步光谱研究。我们观测并分析了该分子基态以及十个能量在180 - 500厘米⁻¹之间的振动激发态的转动光谱。为此，我们使用了一台分段W波段光谱仪（75 - 110吉赫兹），并在室温条件下进行实验。这种方法因此能够获取远红外指纹区域中出现的振动模式的高分辨率纯转动数据，而这些数据用其他技术可能难以获取。所获得的大量数据集将支持进一步的天文搜索和识别工作，比如在星际空间中较温暖的区域，在那里振动激发态的贡献变得越来越重要。
