The electrooxidation-induced structural changes of gold di-superatomic molecules: Au-23 vs. Au-25
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Date
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
6
Series
Physical Chemistry Chemical Physics, Volume 18, issue 6, pp. 4822-4827
Abstract
The gold cluster compounds Au-38(SC2H4Ph)(24) and [Au-25(PPh3)(10)(SC2H4Ph)(5)Cl-2](2+) are known to possess bi-icosahedral Au-23 and Au-25 cores, respectively, inside their ligand shells. These Au cores can be viewed as quasi-molecules composed of two Au-13 superatoms sharing three and one Au+ atoms, respectively. In the present work, we studied the structural changes of these gold di-superatomic molecules upon electrooxidation via spectroelectrochemical techniques, X-ray absorption fine structure analysis, and density functional theory calculations. The Au-23 core was electrochemically stable, but the Au-25 core underwent irreversible structural change. This marked difference in the stability of the oxidized states is ascribed to differences in the bonding scheme of Au-13 units and/or the bonding nature of the protecting ligands.Description
Other note
Citation
Matsuo, S, Yamazoe, S, Goh, J-Q, Akola, J & Tsukuda, T 2016, 'The electrooxidation-induced structural changes of gold di-superatomic molecules : Au-23 vs. Au-25', Physical Chemistry Chemical Physics, vol. 18, no. 6, pp. 4822-4827. https://doi.org/10.1039/c5cp06969f