单氘化环丙烯阳离子c-C3H2D+†的高分辨率旋转振动和旋转光谱

IF 3.3 3区化学 Q2 CHEMISTRY, PHYSICAL Faraday Discussions Pub Date : 2023-04-04 DOI:10.1039/D3FD00068K

Divita Gupta, Weslley G. D. P. Silva, José L. Doménech, Eline Plaar, Sven Thorwirth, Stephan Schlemmer and Oskar Asvany

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引用次数: 1

摘要

应用一种新的作用光谱技术，在4 K低温离子阱仪器中，首次对分子c-C3H2D+进行了高分辨率旋转振动和纯旋转光谱的研究。在ν1对称C-H拉伸的基本带内，以3168.565 cm−1为中心测量了126个旋转振动跃迁，用于预测基振状态下的纯旋转跃迁频率。在此基础上，采用双共振方案在90 ~ 230 GHz之间观测到16个旋转跃迁。这些新的测量将使对c-C3H2D+的首次射电天文搜索成为可能。

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High-resolution rovibrational and rotational spectroscopy of the singly deuterated cyclopropenyl cation, c-C3H2D+†

Applying a novel action spectroscopic technique in a 4 K cryogenic ion-trap instrument, the molecule c-C₃H₂D⁺ has been investigated by high-resolution rovibrational and pure rotational spectroscopy for the first time. In total, 126 rovibrational transitions within the fundamental band of the ν₁ symmetric C–H stretch were measured with a band origin centred at 3168.565 cm⁻¹, which were used to predict pure rotational transition frequencies in the ground vibrational state. Based on these predictions, 16 rotational transitions were observed between 90 and 230 GHz by using a double-resonance scheme. These new measurements will enable the first radio-astronomical search for c-C₃H₂D⁺.