https://doi.org/10.1140/epjb/e2018-90004-2
Regular Article
Anionic cobalt-platinum-ethynyl (CoPt–C2H) metal-organic subnanoparticles: a DFT modeling study★,★★
1
Department of Metallurgical and Materials Engineering Gaziantep University,
Gaziantep, Turkey
2
School of Chemistry, University of Birmingham,
Edgbaston,
Birmingham
B15 2TT, UK
a e-mail: r.l.johnston@bham.ac.uk
Received:
3
January
2018
Received in final form:
19
February
2018
Published online: 18
June
2018
Anionic CoPt-ethynyl metal-organic clusters have been investigated comprehensively. The lowest energetic of anionic ConPtm(ethynyl) clusters have been generally found as 3D structure but with low symmetrical point groups. Our results indicate that the most preferred dissociation channel of the studied clusters is Co atom ejection and the favorable dissociation channel is independent of cluster size. The anionic Pt5C2H cluster shows the highest chemical stability according to the HOMO-LUMO Gap analysis. The C2H generally prefers to bind on a bridge site with a few exceptions. The Co4−5 nanoparticles have a lengthening effect on the C≡C bond of the ethynyl molecule, which may be valuable for C≡C bond activation. In addition, the lowest and the highest vibrational frequencies are reported to guide further experimental studies.
Contribution to the Topical Issue “Shaping Nanocatalysts”, edited by Francesca Baletto, Roy L. Johnston, Jochen Blumberger and Alex Shluger.
Supplementary material in the form of one pdf file available from the Journal web page at https://doi.org/10.1140/epjb/e2018-90004-2.
© The Author(s) 2018. This article is published with open access at Springerlink.com
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
