Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong.
J Phys Chem A. 2013 Dec 19;117(50):13279-83. doi: 10.1021/jp404604z. Epub 2013 Jul 16.
The electronic transition spectrum of ruthenium monoxide (RuO) molecule in the spectral region between 545 nm to 640 nm has been recorded and analyzed using laser ablation/reaction free-jet expansion and laser induced fluorescence spectroscopy. The RuO molecule was produced by reacting laser-ablated ruthenium atoms with N2O seeded in argon. Nine vibrational bands were recorded, and they are identified to belong to four electronic transition systems, namely, the [18.1]Ω = 4-X(5)Δ4, [16.0]Ω = 5-X(5)Δ4, [18.1]Ω = 3-X(5)Δ3, and [15.8]Ω = 4-X(5)Δ3 systems. RuO was determined to have a X(5)Δ4 ground state. A least-squares fit of the measured rotational lines yielded molecular constants for the ground and the low-lying electronic states. A molecular orbital energy level diagram has been used to help with the assignment of the observed electronic states.
采用激光烧蚀/反应自由喷射扩展和激光诱导荧光光谱法，记录并分析了在 545nm 至 640nm 光谱范围内的一氧化钌（RuO）分子的电子跃迁光谱。RuO 分子是通过激光烧蚀的钌原子与氩气中掺入的 N2O 反应生成的。记录了九个振动带，它们被识别为属于四个电子跃迁系统，即 [18.1]Ω = 4-X(5)Δ4、[16.0]Ω = 5-X(5)Δ4、[18.1]Ω = 3-X(5)Δ3 和 [15.8]Ω = 4-X(5)Δ3 系统。RuO 被确定具有 X(5)Δ4 基态。对测量的转动谱线进行最小二乘拟合，得出了基态和低电子态的分子常数。分子轨道能级图用于帮助确定观察到的电子态的归属。
