Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

Photoelectron Imaging Study of the Diplatinum Iodide Dianions [Pt2I6]2– and [Pt2I8]2–

Gibbard, Jemma A. and Verlet, Jan R. R. (2022) 'Photoelectron Imaging Study of the Diplatinum Iodide Dianions [Pt2I6]2– and [Pt2I8]2–.', The Journal of Physical Chemistry A, 126 (22).

Abstract

Photoelectron spectroscopy has been used to study the electronic structure, photodetachment, and photodissociation of the stable diplatinum iodide dianions [Pt2I6]2– and [Pt2I8]2–. Photoelectron spectra over a range of photon energies show the characteristic absence of low kinetic energy photoelectrons expected for dianions as a result of the repulsive Coulomb barrier (RCB). Vertical detachment energies of ∼1.6 and ∼1.9 eV and minimum RCBs of ∼1.2 and ∼1.3 eV are reported for [Pt2I6]2– and [Pt2I8]2–, respectively. Both of the diplatinum halides exhibit three direct detachment channels with distinct anisotropies, analogous to the previously reported spectra for PtI2– and PtI–, suggesting a platinum-centered molecular core that dominates the photodetachment. Additionally, evidence for two-photon photodissociation and subsequent photodetachment channels producing I– are observed for both dianions. Finally, an unexplained feature is observed at photon energies around 3 eV, whose origin is considered. Our work highlights the complex electronic structure of the heavy platinum-halide dianions that are characterized by a dense manifold of electronic states.

Item Type:Article
Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution 4.0.
Download PDF
(1610Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1021/acs.jpca.2c02008
Publisher statement:This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Date accepted:No date available
Date deposited:18 July 2022
Date of first online publication:27 May 2022
Date first made open access:18 July 2022

Save or Share this output

Export:
Export
Look up in GoogleScholar