电子结构和US,SUO和US的结合2
Ashley R E Hunt1, Burak A Tufekci2, Kathryn Foreman2
1Department of Chemistry, Washington State University, Pullman, Washington 99162, United States.
The journal of physical chemistry. A
|April 29, 2025
概括
阳离子光电子光谱学揭示了US−和US2−的垂直分离能量. 相对论初始计算支持了这些发现,为硫化和氧化离子提供了洞察力.
科学领域:
- 计算化学的计算化学
- 量子化学 是一个量子化学.
- 频谱学是一种光谱学.
背景情况:
- 含有的分子由于其独特的电子性质而引起人们的兴趣.
- 了解硫化和氧化的电子结构对于各种应用至关重要.
- 对这些物种的实验数据很难获得和解释.
研究的目的:
- 通过实验确定US−和US2−离子的垂直分离能量 (VDEs).
- 以计算方式研究硫化和氧化离子的电子结构和脱离能量.
- 提供用于重元素系统的理论方法的基准数据.
主要方法:
- 使用Nd:YAG激光波 (355 nm和266 nm) 的阳离子光电子光谱学.
- 相对论的初始计算,包括结合集群理论与系统的基础集合序列.
- 弗兰克-康登模拟用于VDE导出.
- 费勒-彼得森-迪克森 (FPD) 复合方法和基于旋转器的合集群方法用于电离电子脱离能 (ADEs).
主要成果:
- 对US−和US2−的实验VDE分别确定为1.71 eV和2.02 eV.
- 计算准确地复制了实验VDEs,并提供了对分子轨道的洞察.
- 获得了各种硫化和氧化离子的计算ADEs,作为有价值的基准.
结论:
- 该研究成功地结合了实验光谱学和先进的理论计算,以表征硫化离子.
- 结果验证了用于研究重元素系统的计算方法.
- 这项工作有助于更深入地了解基分子离子的电子特性.
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