Excimer and Exciplex Formation in Gold(I) Complexes Preconditioned by Aurophilic Interactions
Date
2020-02
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
Excimers and exciplexes are defined as assemblies of atoms or
molecules A/A’ where interatomic/intermolecular bonding appears
only in excited states such as [A2]* (for excimers) and [AA’]* (for
exciplexes). Their formation has become widely known because of
their role in gas-phase laser technologies, but their significance in
general chemistry terms has been given little attention. Recent investigations in gold chemistry have opened up a new field of excimer and
exciplex chemistry that relies largely on the preorganization of gold(I)
compounds (electronic configuration AuI (5d10)) through aurophilic
contacts. In the corresponding excimers, a new type of Au···Au
bonding arises, with bond energies and lengths approaching those of
ground-state Au@Au bonds between metal atoms in the Au0
(5d106s1) and AuII(5d9) configurations. Excimer formation gives rise to a broad
range of photophysical effects, for which some of the relaxation
dynamics have recently been clarified. Excimers have also been shown
to play an important role in photoredox binuclear gold catalysis.
Description
CITATION: Schmidbaur, H. & Raubenheimer, H. G. 2020. Excimer and Exciplex Formation in Gold(I) Complexes Preconditioned by Aurophilic Interactions. Angewandte Chemie International Education, 59(35):14748-14771. doi:10.1002/anie.201916255
The original publication is available at https://onlinelibrary.wiley.com/journal/15213773
The original publication is available at https://onlinelibrary.wiley.com/journal/15213773
Keywords
Gold compounds, Excimer lasers, Exciplexes, Chemical elements, Relativistic effects, Atom-molecule collisions
Citation
Schmidbaur, H. & Raubenheimer, H. G. 2020. Excimer and Exciplex Formation in Gold(I) Complexes Preconditioned by Aurophilic Interactions. Angewandte Chemie International Education, 59(35):14748-14771