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Uncovering chemical homology of superheavy elements: a close look at astatine
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2024-08-29 , DOI: 10.1039/d4cp01868k
Yuriy A Demidov 1, 2 , Alexander A Shalaevsky 2 , Alexander V Oleynichenko 1 , Alexander A Rusakov 3
Affiliation  

The fascination with superheavy elements (SHE) spans the nuclear physics, astrophysics, and theoretical chemistry communities. Extreme relativistic effects govern these elements' chemistry and challenge the traditional notion of the periodic law. The experimental quest for SHE critically depends on theoretical predictions of these elements' properties, especially chemical homology, which allows for successful prototypical experiments with more readily available lighter homologues of SHE. This work is a comprehensive quantum-chemical investigation into astatine (At) as a non-intuitive homologue of element 113, nihonium (Nh). Combining relativistic coupled-cluster and density functional theory approaches, we model the behaviour of At and AtOH in thermochromatographic experiments on a pristine gold surface. Insights into the electronic structure of AtOH and NhOH and accurate estimates of At–gold and AtOH–gold adsorption energies rationalise recent experimental findings and justify the use of At as a chemical homologue of Nh for the successful design of future experiments on Nh detection and chemical characterisation.

中文翻译:


揭示超重元素的化学同源性:仔细观察砹



对超重元素 (SHE) 的迷恋跨越了核物理学、天体物理学和理论化学界。极端的相对论效应控制着这些元素的化学性质,并挑战了周期律的传统概念。对 SHE 的实验探索关键取决于对这些元素特性的理论预测,尤其是化学同源性,这使得能够使用更容易获得的更轻的 SHE 同系物进行成功的原型实验。这项工作是对砹 (At) 作为 113 号元素镍 (Nh) 的非直观同系物进行的全面量子化学研究。结合相对论耦合团簇和密度泛函理论方法,我们模拟了原始金表面热色谱实验中 At 和 AtOH 的行为。对 AtOH 和 NhOH 电子结构的深入了解以及对 At-gold 和 AtOH-gold 吸附能的准确估计使最近的实验结果合理化,并证明使用 At 作为 Nh 的化学同系物来成功设计未来 Nh 检测和化学实验的合理性表征。
更新日期:2024-08-29
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