Experimental Confirmation of a Topological Isomer of the Ubiquitous Au25(SR)18 Cluster in the Gas Phase
Kalenius, E., Malola, S., Matus, M. F., Kazan, R., Bürgi, T., & Häkkinen, H. (2021). Experimental Confirmation of a Topological Isomer of the Ubiquitous Au25(SR)18 Cluster in the Gas Phase. Journal of the American Chemical Society, 143(3), 1273-1277. https://doi.org/10.1021/jacs.0c11509
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Journal of the American Chemical SocietyAuthors
Date
2021Discipline
Orgaaninen kemiaAnalyyttinen kemiaNanoscience CenterOrganic ChemistryAnalytical ChemistryNanoscience CenterCopyright
© 2021 American Chemical Society
High-resolution electrospray ionization ion mobility mass spectrometry has revealed a gas-phase isomer of the ubiquitous, extremely well-studied Au25(SR)18 cluster both in anionic and cationic form. The relative abundance of the isomeric structures can be controlled by in-source activation. The measured collision cross section of the new isomer agrees extremely well with a recent theoretical prediction (Matus, M. F.; et al. Chem. Commun. 2020, 56, 8087) corresponding to a Au25(SR)18– isomer that is energetically close and topologically connected to the known ground-state structure via a simple rotation of the gold core without breaking any Au–S bonds. The results imply that the structural dynamics leading to isomerization of thiolate-protected gold clusters may play an important role in their gas-phase reactions and that isomerization could be controlled by external stimuli.
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https://converis.jyu.fi/converis/portal/detail/Publication/51555689
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Research Council of FinlandFunding program(s)
Research costs of Academy Professor, AoF; Research post as Academy Professor, AoFAdditional information about funding
The research at the University of Jyväskylä was supported by the Academy of Finland (Grants 292352, 294217, and 319208 to H.H.). The work at the University of Geneva was supported by the Swiss National Science Foundation (Grant 200020_172511).License
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