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Pt(+)(C(2)H(2))(n) Complexes Studied with Selected-Ion Infrared Spectroscopy
[Image: see text] Platinum cation complexes with multiple acetylene molecules are studied with mass spectrometry and infrared laser spectroscopy. Complexes of the form Pt(+)(C(2)H(2))(n) are produced in a molecular beam by laser vaporization, analyzed with a time-of-flight mass spectrometer, and sel...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10350954/ https://www.ncbi.nlm.nih.gov/pubmed/37369010 http://dx.doi.org/10.1021/acs.jpca.3c02734 |
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author | Batchelor, Anna G. Marks, Joshua H. Ward, Timothy B. Duncan, Michael A. |
author_facet | Batchelor, Anna G. Marks, Joshua H. Ward, Timothy B. Duncan, Michael A. |
author_sort | Batchelor, Anna G. |
collection | PubMed |
description | [Image: see text] Platinum cation complexes with multiple acetylene molecules are studied with mass spectrometry and infrared laser spectroscopy. Complexes of the form Pt(+)(C(2)H(2))(n) are produced in a molecular beam by laser vaporization, analyzed with a time-of-flight mass spectrometer, and selected by mass for studies of their vibrational spectroscopy. Photodissociation action spectra in the C–H stretching region are compared to the spectra predicted for different structural isomers using density functional theory. The comparison between experiment and theory demonstrates that platinum forms cation−π complexes with up to three acetylene molecules, producing an unanticipated asymmetric structure for the three-ligand complex. Additional acetylenes form solvation structures around this three-ligand core. Reacted structures that couple acetylene molecules (e.g., to form benzene) are found by theory to be energetically favorable, but their formation is inhibited under the conditions of these experiments by large activation barriers. |
format | Online Article Text |
id | pubmed-10350954 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-103509542023-07-18 Pt(+)(C(2)H(2))(n) Complexes Studied with Selected-Ion Infrared Spectroscopy Batchelor, Anna G. Marks, Joshua H. Ward, Timothy B. Duncan, Michael A. J Phys Chem A [Image: see text] Platinum cation complexes with multiple acetylene molecules are studied with mass spectrometry and infrared laser spectroscopy. Complexes of the form Pt(+)(C(2)H(2))(n) are produced in a molecular beam by laser vaporization, analyzed with a time-of-flight mass spectrometer, and selected by mass for studies of their vibrational spectroscopy. Photodissociation action spectra in the C–H stretching region are compared to the spectra predicted for different structural isomers using density functional theory. The comparison between experiment and theory demonstrates that platinum forms cation−π complexes with up to three acetylene molecules, producing an unanticipated asymmetric structure for the three-ligand complex. Additional acetylenes form solvation structures around this three-ligand core. Reacted structures that couple acetylene molecules (e.g., to form benzene) are found by theory to be energetically favorable, but their formation is inhibited under the conditions of these experiments by large activation barriers. American Chemical Society 2023-06-27 /pmc/articles/PMC10350954/ /pubmed/37369010 http://dx.doi.org/10.1021/acs.jpca.3c02734 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Batchelor, Anna G. Marks, Joshua H. Ward, Timothy B. Duncan, Michael A. Pt(+)(C(2)H(2))(n) Complexes Studied with Selected-Ion Infrared Spectroscopy |
title | Pt(+)(C(2)H(2))(n) Complexes Studied with Selected-Ion Infrared Spectroscopy |
title_full | Pt(+)(C(2)H(2))(n) Complexes Studied with Selected-Ion Infrared Spectroscopy |
title_fullStr | Pt(+)(C(2)H(2))(n) Complexes Studied with Selected-Ion Infrared Spectroscopy |
title_full_unstemmed | Pt(+)(C(2)H(2))(n) Complexes Studied with Selected-Ion Infrared Spectroscopy |
title_short | Pt(+)(C(2)H(2))(n) Complexes Studied with Selected-Ion Infrared Spectroscopy |
title_sort | pt(+)(c(2)h(2))(n) complexes studied with selected-ion infrared spectroscopy |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10350954/ https://www.ncbi.nlm.nih.gov/pubmed/37369010 http://dx.doi.org/10.1021/acs.jpca.3c02734 |
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