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Advances in Computational Spectroscopy, 2nd Edition

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Computational and Theoretical Chemistry".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 501

Special Issue Editors


E-Mail Website
Guest Editor
Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
Interests: molecular interactions; conformational analysis; photochemistry of molecular systems; matrix isolation technique; theoretical modelling of molecular interactions and spectroscopic properties; infrared spectroscopy as a basic tool in molecular structure determination; spectroscopic analytical analysis
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
Interests: computational spectroscopy; vibrationally resolved electronic spectra; vibrational spectra; chiroptical spectra; anharmonicity; DFT; composite schemes; dispersion

Special Issue Information

Dear Colleagues,

It is my great pleasure to invite you to submit an article to a Special Issue of Molecules on the theme of “Advances in Computational Spectroscopy, 2nd Edition”.

The increasing sophistication of experimental spectroscopic techniques makes their results increasingly difficult to interpret without the help of computational chemistry. Computational spectroscopy, which is connected to quantum mechanics, molecular spectroscopy, and computational chemistry, is a tool that provides predictions of spectroscopic characteristics and properties, and one that is constantly developing. Quantum chemistry has reached such an accuracy that it can be used to plan and lead experimental research, participate in the determination of the spectroscopic parameters, and obtain desired results or information. Additionally, its experimental data are suitable for benchmarking theoretical results or introducing new methods of calculation.

It is our hope that this Special Issue will highlight the achievements that are being made in the field of computational spectroscopy within broad frequency ranges, covering molecular systems of increasing sizes and complexity, from single molecules, clusters, and complexes to condensed phase studies, as well as research on organic molecules and inorganic complexes, basic studies, and different application areas.

Manuscripts describing original research and reviews focusing on computational spectroscopy will be welcome in this Special Issue.

Dr. Magdalena Sałdyka
Prof. Dr. Małgorzata Biczysko
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • spectroscopy
  • computational spectroscopy in inorganic chemistry
  • computational spectroscopy in bioinorganic chemistry
  • computational spectroscopy in biological systems
  • molecular and supramolecular structure
  • crystal structure
  • molecular modelling
  • time-independent and time-dependent approaches
  • molecular dynamics
  • density functional theory (DFT)
  • time-dependent DFT (TD-DFT)
  • coupled cluster (CC) approaches and composite schemes
  • bottom-up and top-down semi-experimental approaches

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Published Papers (1 paper)

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Research

21 pages, 3670 KiB  
Article
Quantum Data-Driven Modeling of Interactions and Vibrational Spectral Bands in Cationic Light Noble-Gas Hydrides: [He2H]+ and [Ne2H]+
by María Judit Montes de Oca-Estévez, Álvaro Valdés and Rita Prosmiti
Molecules 2025, 30(11), 2440; https://doi.org/10.3390/molecules30112440 - 3 Jun 2025
Viewed by 274
Abstract
Motivated by two of the most unexpected discoveries in recent years—the detection of ArH+ and HeH+ noble gas molecules in the cold, low-pressure regions of the Universe—we investigate [He2H]+ and [Ne2H]+ as potentially detectable species [...] Read more.
Motivated by two of the most unexpected discoveries in recent years—the detection of ArH+ and HeH+ noble gas molecules in the cold, low-pressure regions of the Universe—we investigate [He2H]+ and [Ne2H]+ as potentially detectable species in the interstellar medium, providing new insights into their energetic and spectral properties. These findings are crucial for advancing our understanding of noble gas chemistry in astrophysical environments. To achieve this, we employed a data-driven approach to construct a high-accuracy machine-learning potential energy surface using the reproducing kernel Hilbert space method. Training and testing datasets are generated via high-level CCSD(T)/CBS[56] quantum chemistry computations, followed by a rigorous validation protocol to ensure the reliability of the potential. The ML-PES is then used to compute vibrational states within the MCTDH framework, and assign spectral transitions for the most common isotopologues of these species in the interstellar medium. Our results are compared with previously recorded values, revealing that both cations exhibit a prominent proton-shuttle motion within the infrared spectral range, making them strong candidates for telescopic observation. This study provides a solid computational foundation, based on rigorous, fully quantum treatments, aiming to assist in the identification of these yet unobserved He/Ne hydride cations in astrophysical environments. Full article
(This article belongs to the Special Issue Advances in Computational Spectroscopy, 2nd Edition)
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