Nanosecond-Lived Excimer Observation in a Crystal of a Rhodium(I) Complex via Time-Resolved X-ray Laue Diffraction

IF 4.8 2区化学 Q2 CHEMISTRY, PHYSICAL

The Journal of Physical Chemistry Letters Pub Date : 2024-10-09 DOI:10.1021/acs.jpclett.4c0247610.1021/acs.jpclett.4c02476

Piotr Łaski, Lerato Bosman, Jakub Drapała, Radosław Kamiński, Dariusz Szarejko, Patryk Borowski, Andreas Roodt, Robert Henning, Alice Brink* and Katarzyna N. Jarzembska*,

引用次数: 0

Abstract

The rare observation of transient Rh···Rh excimer formation in a single crystal is reported. The estimated excited-state lifetime at 100 K is 2 ns, which makes it the shortest-lived small-molecule species caught experimentally using the laser-pump/X-ray-probe time-resolved Laue method. Upon excitation with 390 nm laser light, the intermolecular Rh···Rh distance decreases from 3.379(4) to 3.19(1) Å, and the metal–metal contact gains more bonding character. On the basis of the experimental results and theoretical modeling, the structural changes determined with 100 ps time resolution reflect principally the S₀ → S₁ electronic transition.

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通过时间分辨 X 射线 Laue 衍射观察铑(I)配合物晶体中的纳秒级受激辐射

本报告罕见地观测到了单晶体中瞬时 Rh-Rh 准分子的形成。在 100 K 时的激发态寿命估计为 2 ns，这使其成为使用激光泵/X 射线探针时间分辨 Laue 方法实验捕获的寿命最短的小分子物种。在 390 nm 激光的激发下，Rh--Rh 分子间的距离从 3.379(4) Å 减小到 3.19(1) Å，金属与金属之间的接触变得更加键合。根据实验结果和理论模型，在 100 ps 时间分辨率下测定的结构变化主要反映了 S0 → S1 电子转变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The Journal of Physical Chemistry Letters CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

9.60

自引率

7.00%

发文量

1519

审稿时长

1.6 months

期刊介绍： The Journal of Physical Chemistry (JPC) Letters is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, chemical physicists, physicists, material scientists, and engineers. An important criterion for acceptance is that the paper reports a significant scientific advance and/or physical insight such that rapid publication is essential. Two issues of JPC Letters are published each month.