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一个高分辨率的光电子光谱和计算研究TaX- (X = C,N,O) 的研究

Xiaolin Chen¹, Shuaiting Yan², Rui Zhang²

¹College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, China.

The Journal of chemical physics

|November 18, 2024

概括

研究人员使用高分辨率光电子光谱测量了碳化物,化物和氧化物离子的电子亲和力. 这项研究为了解含分子及其电子性质提供了关键数据.

科学领域:

量子化学是一个量子化学.
分子光谱学分子光谱学
材料科学材料科学材料科学

背景情况:

基于的化合物对材料科学有兴趣.
了解二元原子离子的电子结构对于预测它们的化学行为至关重要.

研究的目的:

通过实验确定碳化物 (TaC-),化 (TaN-) 和氧化物 (TaO-) 离子的电子亲和力.
通过计算来研究TaC,TaN和TaO分子的电子状态.

主要方法:

高分辨率光电子光谱利用冷离子陷和缓慢电子速度成像 (cryo-SEVI).
用单次和双次激发和三次激发 (CCSD(T)) 方法进行电子亲和度计算的合集群.
多参考配置交互与单个和双激发加上戴维森校正 (MRCI+Q) 方法来预测激发状态,包括旋转轨道合.

主要成果:

精确的电子亲和力被确定为TaC (2.098(2) eV,TaN (1.576(2) eV和TaO (1.069(2) eV).
计算方法准确地复制了实验电子亲和关系.
确定了TaC,TaN和TaO分子的几个新的兴奋电子状态.

结论:

该研究成功地描述了TaC-,TaN-和TaO-离子的电子特性.
综合实验和计算方法提供了对这些含的二元原子分子电子结构的详细了解.

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