1
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Rummel L, Schreiner PR. Advances and Prospects in Understanding London Dispersion Interactions in Molecular Chemistry. Angew Chem Int Ed Engl 2024; 63:e202316364. [PMID: 38051426 DOI: 10.1002/anie.202316364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/03/2023] [Accepted: 12/05/2023] [Indexed: 12/07/2023]
Abstract
London dispersion (LD) interactions are the main contribution of the attractive part of the van der Waals potential. Even though LD effects are the driving force for molecular aggregation and recognition, the role of these omnipresent interactions in structure and reactivity had been largely underappreciated over decades. However, in the recent years considerable efforts have been made to thoroughly study LD interactions and their potential as a chemical design element for structures and catalysis. This was made possible through a fruitful interplay of theory and experiment. This review highlights recent results and advances in utilizing LD interactions as a structural motif to understand and utilize intra- and intermolecularly LD-stabilized systems. Additionally, we focus on the quantification of LD interactions and their fundamental role in chemical reactions.
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Affiliation(s)
- Lars Rummel
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
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2
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Sánchez-Alvarado AB, Zhou J, Jin P, Neumann O, Senftle TP, Nordlander P, Halas NJ. Combined Surface-Enhanced Raman and Infrared Absorption Spectroscopies for Streamlined Chemical Detection of Polycyclic Aromatic Hydrocarbon-Derived Compounds. ACS NANO 2023; 17:25697-25706. [PMID: 38063501 DOI: 10.1021/acsnano.3c10746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) constitute a class of universally prevalent carcinogenic environmental contaminants. It is increasingly recognized, however, that PAHs derivatized with oxygen, sulfur, or nitrogen functional groups are frequently more dangerous than their unfunctionalized counterparts. This much larger family of chemicals─polycyclic aromatic compounds─PACs─is far less well characterized than PAHs. Using surface-enhanced Raman and IR Absorption spectroscopies (SERS + SEIRA) combined on a single substrate, along with density functional theoretical (DFT) calculations, we show that direct chemical detection and identification of PACs at sub-parts-per-billion concentration can be achieved. Focusing our studies on 9,10-anthraquinone, 5,12-tetracenequinone, 9-nitroanthracene, and 1-nitropyrene as model PAC contaminants, detection is made possible by incorporating a hydroxy-functionalized self-assembled monolayer that facilitates hydrogen bonding between analytes and the SERS + SEIRA substrate. 5,12-Tetracenequinone was detected at 0.3 ppb, and the limit of detection was determined to be 0.1 ppb using SEIRA alone. This approach is straightforwardly extendable to other families of analytes and will ultimately facilitate fieldable chemical detection of these dangerous yet largely overlooked environmental contaminants.
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Affiliation(s)
- Andrés B Sánchez-Alvarado
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Jingyi Zhou
- Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Peixuan Jin
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Oara Neumann
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Thomas P Senftle
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Peter Nordlander
- Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, United States
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Naomi J Halas
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
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3
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Folkestad SD, Paul AC, Ponzi A, Grazioli C, Coreno M, de Simone M, Koch H, Coriani S. Electronic Characterization of Glycolaldehyde: Experimental and Theoretical Insights from the Core- and Valence-Level Spectroscopy. J Phys Chem A 2023; 127:10621-10631. [PMID: 38084657 DOI: 10.1021/acs.jpca.3c06703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The core-level electron excitation and ionization spectra of glycolaldehyde have been investigated by photoabsorption and photoemission spectroscopy at both carbon and oxygen K-edges; the valence ionization spectra were also recorded by photoelectron spectroscopy in the UV-vis region. The spectra are interpreted by means of ab initio calculations based on the equation-of-motion coupled cluster singles and doubles (EOM-CCSD) and coupled cluster singles, doubles, and perturbative are in good agreement with the experimental results, and many of the observed features are assigned. The photoabsorption spectra are not only dominated by transitions from core-level orbitals to unoccupied π and σ orbitals but also show structures due to Rydberg transitions.
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Affiliation(s)
- Sarai Dery Folkestad
- Department of Chemistry, NTNU─Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Alexander C Paul
- Department of Chemistry, NTNU─Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Aurora Ponzi
- Department of Physical Chemistry, R. Bošković Institute, Bijenička Cesta 54, Zagreb 10000, Croatia
| | - Cesare Grazioli
- IOM-CNR, Istituto Officina dei Materiali del Consiglio Nazionale delle Ricerche, Basovizza Area Science Park, Trieste I-34149, Italy
| | - Marcello Coreno
- ISM-CNR, Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche, Basovizza Area Science Park, Trieste I-34149, Italy
| | - Monica de Simone
- IOM-CNR, Istituto Officina dei Materiali del Consiglio Nazionale delle Ricerche, Basovizza Area Science Park, Trieste I-34149, Italy
| | - Henrik Koch
- Department of Chemistry, NTNU─Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Sonia Coriani
- DTU Chemistry, Technical University of Denmark, Kemitorvet Bldg 207, Kgs. Lyngby DK-2800, Denmark
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4
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Buschmann P, Lengsfeld KG, Djahandideh J, Grabow JU. From rotational resolved spectra to an extended increment system of planar moments allowing ad-hoc conformational identification – Exemplification by the broadband microwave spectrum of α-hydroxyisobutyric acid. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131805] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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5
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Li Y, Shi Y, Song X, Zhao Z, Zhang N, Hao C. Insights into the existing form of glycolaldehyde in methanol solution: an experimental and theoretical investigation. NEW J CHEM 2021. [DOI: 10.1039/d1nj00252j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Glycolaldehyde (HOCH2CHO, GA), the simplest molecule containing both hydroxyl and aldehyde groups, is structurally the most elementary member of the monosaccharide sugars, which may provide new clues for probing the origin of life on planets like the Earth.
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Affiliation(s)
- Yuehui Li
- State Key Laboratory of Fine Chemicals
- School of Chemistry
- Dalian University of Technology
- Dalian 116024
- People's Republic of China
| | - Yantao Shi
- State Key Laboratory of Fine Chemicals
- School of Chemistry
- Dalian University of Technology
- Dalian 116024
- People's Republic of China
| | - Xuedan Song
- State Key Laboratory of Fine Chemicals
- School of Chemistry
- Dalian University of Technology
- Dalian 116024
- People's Republic of China
| | - Zhengyan Zhao
- State Key Laboratory of Fine Chemicals
- School of Chemistry
- Dalian University of Technology
- Dalian 116024
- People's Republic of China
| | - Naitian Zhang
- State Key Laboratory of Fine Chemicals
- School of Chemistry
- Dalian University of Technology
- Dalian 116024
- People's Republic of China
| | - Ce Hao
- State Key Laboratory of Fine Chemicals
- School of Chemistry
- Dalian University of Technology
- Dalian 116024
- People's Republic of China
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6
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Pérez C, Steber AL, Temelso B, Kisiel Z, Schnell M. Water Triggers Hydrogen-Bond-Network Reshaping in the Glycoaldehyde Dimer. Angew Chem Int Ed Engl 2020; 59:8401-8405. [PMID: 32096889 PMCID: PMC7318665 DOI: 10.1002/anie.201914888] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/28/2020] [Indexed: 11/19/2022]
Abstract
Carbohydrates are ubiquitous biomolecules in nature. The vast majority of their biomolecular activity takes place in aqueous environments. Molecular reactivity and functionality are, therefore, often strongly influenced by not only interactions with equivalent counterparts, but also with the surrounding water molecules. Glycoaldehyde (Gly) represents a prototypical system to identify the relevant interactions and the balance that governs them. Here we present a broadband rotational‐spectroscopy study on the stepwise hydration of the Gly dimer with up to three water molecules. We reveal the preferred hydrogen‐bond networks formed when water molecules sequentially bond to the sugar dimer. We observe that the dimer structure and the hydrogen‐bond networks at play remarkably change upon the addition of just a single water molecule to the dimer. Further addition of water molecules does not significantly alter the observed hydrogen‐bond topologies.
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Affiliation(s)
- Cristóbal Pérez
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607, Hamburg, Germany.,Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 1, 24118, Kiel, Germany
| | - Amanda L Steber
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607, Hamburg, Germany.,Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 1, 24118, Kiel, Germany
| | - Berhane Temelso
- Division of Information Technology, College of Charleston, Charleston, SC, 29424, USA
| | - Zbigniew Kisiel
- Institute of Physics, Polish Academy of Sciences, 02-668, Warszawa, Poland
| | - Melanie Schnell
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607, Hamburg, Germany.,Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 1, 24118, Kiel, Germany
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7
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Pérez C, Steber AL, Temelso B, Kisiel Z, Schnell M. Water Triggers Hydrogen‐Bond‐Network Reshaping in the Glycoaldehyde Dimer. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Cristóbal Pérez
- Deutsches Elektronen-Synchrotron DESY Notkestraße 85 22607 Hamburg Germany
- Christian-Albrechts-Universität zu Kiel Max-Eyth-Str. 1 24118 Kiel Germany
| | - Amanda L. Steber
- Deutsches Elektronen-Synchrotron DESY Notkestraße 85 22607 Hamburg Germany
- Christian-Albrechts-Universität zu Kiel Max-Eyth-Str. 1 24118 Kiel Germany
| | - Berhane Temelso
- Division of Information Technology College of Charleston Charleston SC 29424 USA
| | - Zbigniew Kisiel
- Institute of Physics Polish Academy of Sciences 02-668 Warszawa Poland
| | - Melanie Schnell
- Deutsches Elektronen-Synchrotron DESY Notkestraße 85 22607 Hamburg Germany
- Christian-Albrechts-Universität zu Kiel Max-Eyth-Str. 1 24118 Kiel Germany
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8
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Zhang Z, Nie W, Sun F, Zhang Y, Xie M, Hu Y. Conformational Landscapes and Infrared Spectra of Gas-phase Interstellar Molecular Clusters [(C 3H 3N)(CH 3OH) n, n = 1-4]. J Phys Chem A 2020; 124:2398-2407. [PMID: 32149507 DOI: 10.1021/acs.jpca.9b11387] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Acrylonitrile (A) is one of the important interstellar molecules, which is considered closely related to the origin of life. And methanol (M) is one of the commonly used solvents, which is also found in outer space. Herein, we obtained the infrared (IR) spectra of size-selected AMn (n = 1-4) clusters in supersonic jet by monitoring their fragments of H+AMn-1 (n = 1-4) with vacuum ultraviolet single-photon soft ionization/IR-depletion technique. IR spectra of AMn (n = 1-4) clusters were recorded in the CH and OH vibration bands in the range of 2700-3800 cm-1. Spectra of AMn (n = 1-4) clusters are similar in the CH stretching regions, while those show significant variations in the OH stretching regions with the increase of methanol molecules. Calculated IR spectra, which were predicted with the B3LYP-D3(BJ)/aug-cc-pVDZ method, were employed to compare with the experimental results. For AM, AM2, and AM3, the structures with the methanol cyclic hydrogen bonded with [N1-C4(H6)] of acrylonitrile are more stable than the other H-bonded structures. For the most stable structures of AM4, however, the results show that the acrylonitrile is binding to a H-bonded ring formed by OH groups of four methanol molecules. The AM, AM2, and AM3 conformers with the single ring on the C1 side of acrylonitrile, such as C1-AM-a, C1-AM2-a, and C1-AM3-a, are dominant in the gas phase, while the C2-AM4-a conformer with the H-bonded ring formed by the OH groups on the C2 side of acrylonitrile is more stable than that of CM4-A-a in our experimental conditions (>130 K). These findings may provide valuable insight into the microsolvation process of the interstellar molecules and other biomolecules in gas phase.
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Affiliation(s)
- Zhaoli Zhang
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China
| | - Wuyi Nie
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China
| | - Fufei Sun
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China
| | - Yu Zhang
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China
| | - Min Xie
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China
| | - Yongjun Hu
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China
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9
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Jin L, Li B, Cui Z, Shang J, Wang Y, Shao C, Pan T, Ge Y, Qi Z. Selenium Substitution-Induced Hydration Changes of Crown Ethers As Tools for Probing Water Interactions with Supramolecular Macrocycles in Aqueous Solutions. J Phys Chem B 2019; 123:9692-9698. [DOI: 10.1021/acs.jpcb.9b09618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lin Jin
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
| | - Bo Li
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
| | - Zhiliyu Cui
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
| | - Jie Shang
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
| | - Yangxin Wang
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
| | - Chenguang Shao
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
| | - Tiezheng Pan
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
| | - Yan Ge
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
| | - Zhenhui Qi
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, Synergetic Innovation Center of Flexible Electronics and Healthcare Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P. R. China
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10
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Licari D, Tasinato N, Spada L, Puzzarini C, Barone V. VMS-ROT: A New Module of the Virtual Multifrequency Spectrometer for Simulation, Interpretation, and Fitting of Rotational Spectra. J Chem Theory Comput 2017; 13:4382-4396. [PMID: 28742339 PMCID: PMC5636176 DOI: 10.1021/acs.jctc.7b00533] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Virtual Multifrequency Spectrometer (VMS) is a tool that aims at integrating a wide range of computational and experimental spectroscopic techniques with the final goal of disclosing the static and dynamic physical-chemical properties "hidden" in molecular spectra. VMS is composed of two parts, namely, VMS-Comp, which provides access to the latest developments in the field of computational spectroscopy, and VMS-Draw, which provides a powerful graphical user interface (GUI) for an intuitive interpretation of theoretical outcomes and a direct comparison to experiment. In the present work, we introduce VMS-ROT, a new module of VMS that has been specifically designed to deal with rotational spectroscopy. This module offers an integrated environment for the analysis of rotational spectra: from the assignment of spectral transitions to the refinement of spectroscopic parameters and the simulation of the spectrum. While bridging theoretical and experimental rotational spectroscopy, VMS-ROT is strongly integrated with quantum-chemical calculations, and it is composed of four independent, yet interacting units: (1) the computational engine for the calculation of the spectroscopic parameters that are employed as a starting point for guiding experiments and for the spectral interpretation, (2) the fitting-prediction engine for the refinement of the molecular parameters on the basis of the assigned transitions and the prediction of the rotational spectrum of the target molecule, (3) the GUI module that offers a powerful set of tools for a vis-à-vis comparison between experimental and simulated spectra, and (4) the new assignment tool for the assignment of experimental transitions in terms of quantum numbers upon comparison with the simulated ones. The implementation and the main features of VMS-ROT are presented, and the software is validated by means of selected test cases ranging from isolated molecules of different sizes to molecular complexes. VMS-ROT therefore offers an integrated environment for the analysis of the rotational spectra, with the innovative perspective of an intimate connection to quantum-chemical calculations that can be exploited at different levels of refinement, as an invaluable support and complement for experimental studies.
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Affiliation(s)
- Daniele Licari
- Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Nicola Tasinato
- Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Lorenzo Spada
- Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa, Italy.,Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna , Via Selmi 2, I-40126 Bologna, Italy
| | - Cristina Puzzarini
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna , Via Selmi 2, I-40126 Bologna, Italy
| | - Vincenzo Barone
- Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa, Italy
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11
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Szczepaniak M, Moc J. Anomerization reaction of bare and microhydrated d-erythrose via explicitly correlated coupled cluster approach. Two water molecules are optimal. J Comput Chem 2017; 38:288-303. [PMID: 27896831 DOI: 10.1002/jcc.24680] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/27/2016] [Accepted: 11/02/2016] [Indexed: 01/23/2023]
Abstract
We present a comprehensive benchmark computational study which has explored a complete path of the anomerization reaction of bare d-erythrose involving a pair of the low-energy α- and β-furanose anomers, the former of which was observed spectroscopically (Cabezas et al., Chem. Commun. 2013, 49, 10826). We find that the ring opening of the α-anomer yields the most stable open-chain tautomer which step is followed by the rotational interconversion of the open-chain rotamers and final ring closing to form the β-anomer. Our results indicate the flatness of the reaction's potential energy surface (PES) corresponding to the rotational interconversion path and its sensitivity to the computational level. By using the explicitly correlated coupled cluster CCSD(T)-F12/cc-pVTZ-F12 energies, we determine the free energy barrier for the α-furanose ring-opening (rate-determining) step as 170.3 kJ/mol. The question of the number of water molecules (n) needed for optimal stabilization of the erythrose anomerization reaction rate-determining transition state is addressed by a systematic exploration of the PES of the ring opening in the α-anomer-(H2 O)n and various β-anomer-(H2 O)n (n = 1-3) clusters using density functional and CCSD(T)-F12 computations. These computations suggest the lowest free energy barrier of the ring opening for doubly hydrated α-anomer, achieved by a mechanism that involves water-mediated multiple proton transfer coupled with the furanose CO bond breakage. Among the methods used, the G4 performed best against the CCSD(T)-F12 reference at estimating the ring-opening barrier heights for both the hydrated and bare erythrose conformers. Our results for the hydrated species are most relevant to an experimental study of the anomerization reaction of d-erythrose to be carried out in microsolvation environment. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Marek Szczepaniak
- Faculty of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw, 50-383, Poland
| | - Jerzy Moc
- Faculty of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw, 50-383, Poland
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12
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Mullaney JC, Medcraft C, Tew DP, Lewis-Borrell L, Golding BT, Walker NR, Legon AC. Cooperative hydrogen bonds form a pseudocycle stabilizing an isolated complex of isocyanic acid with urea. Phys Chem Chem Phys 2017; 19:25080-25085. [DOI: 10.1039/c7cp04315e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The structure and properties of a gas phase complex formed between urea and isocyanic acid are characterised through microwave spectroscopy andab initiocalculations at the CCSD(T)(F12*)/aug-cc-pVTZ level.
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Affiliation(s)
- John C. Mullaney
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Chris Medcraft
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
- UK
| | - David P. Tew
- School of Chemistry
- University of Bristol
- Bristol
- UK
| | - Luke Lewis-Borrell
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Bernard T. Golding
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Nicholas R. Walker
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
- UK
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13
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Pérez C, López JC, Blanco S, Schnell M. Water-Induced Structural Changes in Crown Ethers from Broadband Rotational Spectroscopy. J Phys Chem Lett 2016; 7:4053-4058. [PMID: 27676358 DOI: 10.1021/acs.jpclett.6b01939] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The complexes of 12-crown-4 ether (12C4) with water, generated in a supersonic jet, have been studied using broadband Fourier transform microwave spectroscopy. Three 1:1 and one 1:2 clusters have been observed and their structures unambiguously identified through the observation of isotopologue spectra. The structures of the clusters are based on networks of O-H···O and C-H···O hydrogen bonds. The most abundant 1:1 cluster is formed from the most stable S4 symmetry conformer of 12C4, even though it is not the energetically favored water complex. Interestingly, the structures of the most stable water cluster and the other remaining observed 1:1 and 1:2 complexes are formed from the second or the fifth most abundant conformers of 12C4. This shows the existence of a mechanism that changes the conformation of 12C4 so that the host-guest interactions can be maximized, even for a "soft" ligand like water.
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Affiliation(s)
- Cristóbal Pérez
- Max Planck Institute for the Structure and Dynamics of Matter , 22761 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging at the Universität Hamburg , 22761 Hamburg, Germany
| | - Juan C López
- Max Planck Institute for the Structure and Dynamics of Matter , 22761 Hamburg, Germany
- Departamento de Quimica Fisica y Quimica Inorganica, Facultad de Ciencias, Universidad de Valladolid , Valladolid 47011, Spain
| | - Susana Blanco
- Departamento de Quimica Fisica y Quimica Inorganica, Facultad de Ciencias, Universidad de Valladolid , Valladolid 47011, Spain
| | - Melanie Schnell
- Max Planck Institute for the Structure and Dynamics of Matter , 22761 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging at the Universität Hamburg , 22761 Hamburg, Germany
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