The low-lying electronic states of FeO+: Rotational analysis of the resonance enhanced photodissociation spectra of the 6Π7/2←X 6Σ+ system
作者:Fernando Aguirre、John Husband、Christopher J. Thompson、Kay L. Stringer、Ricardo B. Metz
DOI:10.1063/1.1615521
日期:2003.11.15
photodissociation spectra of the (8,0) and (9,0) bands of the 6Π7/2←6Σ+ system of FeO+ have been recorded. From a rotational analysis, the rotational parameters for the 6Σ+ ground state of FeO+ have been obtained for the first time. The rotational constant B0=0.5020±0.0004 cm−1 is derived, giving r0=1.643±0.001 A. Other molecular parameters determined for the 6Σ+ ground state are the spin–spin coupling constant, λ=−0
记录了 FeO+ 的 6Π7/2←6Σ+ 体系的 (8,0) 和 (9,0) 谱带的共振增强 (1+1) 光解光谱。通过旋转分析,首次获得了 FeO+ 的 6Σ+ 基态的旋转参数。推导出旋转常数 B0=0.5020±0.0004 cm-1,得到 r0=1.643±0.001 A。为 6Σ+ 基态确定的其他分子参数是自旋-自旋耦合常数,λ=-0.126±0.006 cm-1,和自旋-旋转耦合常数,γ=-0.033±0.002 cm-1。将上态指定为 6Π7/2 是基于能带的特征外观和对 FeO+ 执行的时间相关密度泛函 (TD-DFT) 计算。通过对 CrF 和 MnO 的计算证实了 TD-DFT 方法预测 FeO+ 激发态的可靠性,