Published October 9, 2024 | Version v1
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Nanosecond-Lived Excimer Observation in a Crystal of a Rhodium(I) Complex via Time-Resolved X-ray Laue Diffraction

Description

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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Additional details

Identifiers

DOI
10.1021/acs.jpclett.4c02476
Other
oai:uchicago.tind.io:13688

Funding

National Science Centre
2020/38/E/ST4/00400
University of the Free State
National Research Foundation
107802
Competitive Program for Rated Researchers of SA
111698
Competitive Program for Rated Researchers of SA
137759
Swiss National Science Foundation
IZLSZ2_149029/1
WCSS
285
U.S. Department of Energy
DE-AC02-06CH11357
National Institute of General Medical Sciences
R24GM111072
National Institute of Diabetes and Digestive and Kidney Diseases

UChicago Information

Division(s)
Institutes & Centers
Center(s) or Institute(s)
Center for Advanced Radiation Sources