Aiuchi K, Shibuya K
Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ohokayama, Meguro-ku, Tokyo, 152-8551, Japan
J Mol Spectrosc. 2000 Dec;204(2):235-261. doi: 10.1006/jmsp.2000.8226.
We report the first gas-phase spectroscopic study of iron mononitride (FeN). FeN molecules were generated by the reaction of laser-ablated Fe atoms with NH(3) under supersonic jet-cooled conditions. Laser-induced fluorescence excitation spectra were measured between 16 300 and 21 600 cm(-1), and rotational analyses have been performed for about 25 vibronic bands. The Omega value of the ground state has been determined to be 52, which could be the spin-orbit component of (2)Delta (ellipsis 1delta(3)9varsigma(2)) or (4)Pi (ellipsis 1delta(3)9varsigma(1)4pi(1)). The excited states in the visible absorption region show very complicated rovibronic structures due to heavy perturbations. Excited state lifetimes, (56)Fe(14)N/(56)Fe(15)N isotope shifts, and dispersed fluorescence spectra were measured for the majority of the bands, which were classified into the five Omega = 52-XOmega = 52 band systems. Copyright 2000 Academic Press.
我们报告了对一氮化铁（FeN）的首次气相光谱研究。在超声速喷射冷却条件下，通过激光烧蚀的铁原子与NH₃反应生成FeN分子。在16300至21600 cm⁻¹之间测量了激光诱导荧光激发光谱，并对约25个振转带进行了转动分析。基态的Ω值已确定为52，它可能是(2)Δ（省略号1δ(3)9ς(2)）或(4)Π（省略号1δ(3)9ς(1)4π(1)）的自旋轨道分量。由于强烈的微扰，可见吸收区域的激发态显示出非常复杂的振转结构。对大多数谱带测量了激发态寿命、(56)Fe(14)N/(56)Fe(15)N同位素位移和色散荧光光谱，这些谱带被归类为五个Ω = 52 - XΩ = 52能带系统。版权所有2000年学术出版社。
