1
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Neeman EM, Huet TR. Unravelling the structural features of monosaccharide glyceraldehyde upon mono-hydration by quantum chemistry and rotational spectroscopy. J Chem Phys 2023; 159:194303. [PMID: 37971036 DOI: 10.1063/5.0176546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 10/19/2023] [Indexed: 11/19/2023] Open
Abstract
Water is a fundamental molecule for life, and investigating its interaction with monosaccharides is of great interest in order to understand its influence on their conformational behavior. In this study, we report on the conformational landscape of monosaccharide glyceraldehyde, the simplest aldose sugar, in the presence of a single water molecule in the gas phase. This investigation was performed using a combination of Fourier transform microwave spectroscopy and theoretical calculations. Out of the nine calculated conformers, only the lowest energy conformer was experimentally observed and characterized. Interestingly, the presence of water was found to induce structural features in the lowest energy conformer of the glyceraldehyde monomer, with water positioned between the alcohol groups. To analyze this interaction further, non-covalent interaction plots were employed to map the intermolecular interactions in the observed species. Additionally, natural bond orbital analysis was conducted to study the effects of charge transfer in the monohydrate system. Furthermore, topological analysis based on Bader's Atoms in Molecules theory was performed to gain insights into the observed complex. The results of all three analyses consistently showed the formation of relatively strong hydrogen bonds between water and glyceraldehyde, leading to the formation of a seven-member ring network.
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Affiliation(s)
- E M Neeman
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - T R Huet
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
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2
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Neeman EM, Avilés Moreno JR, Huet TR. Gas-phase hydration of nopinone: the interplay between theoretical methods and experiments unveils the conformational landscape. Phys Chem Chem Phys 2021; 23:18137-18144. [PMID: 34612277 DOI: 10.1039/d1cp02717d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of microsolvated nopinone formed in the supersonic jet expansion is investigated in the gas phase. The rotational spectra of nopinone(H2O)n (n = 1, 2, 3) were analysed by means of Fourier transform microwave spectroscopy. In the present study, three monohydrates, two dihydrates and two trihydrates were observed and characterized. The observed structures are the lowest energy conformers predicted by quantum chemical calculations. In all the observed hydrates of nopinone, water was found to be linked to the ketone group (C[double bond, length as m-dash]O) with a strong hydrogen bond (ONOPHW) and finishing with a dispersive one (OWHNOP). The structure of nopinone was found to alter the structure of water dimer and water trimer, which make nopinone be surrounded with a chain of water molecules. A remarkable decrease in the H-bonding length was observed when the number of attached water molecules is increased. Different DFT and ab initio calculations at the equilibrium structure allowed the identification of the observed conformers. Evaluation of the B3LYP-D3 and ωB97X-D results revealed deficiencies in reproducing the structure of one observed monohydrated structure while MP2 and M06-2X reproduce all the three observed structures. A comparison with similar bicyclic ketones highlights how a small change in the bicyclic ring leads to different effects in the microsolvation of biogenic VOCs. This study presents the first step of molecular aggregation to understand the atmospheric formation of aerosols at the molecular scale.
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Affiliation(s)
- Elias M Neeman
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France.
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3
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Mélan J, Khemissi S, Nguyen HVL. Steric effects on two inequivalent methyl internal rotations of 3,4-dimethylfluorobenzene. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 253:119564. [PMID: 33621937 DOI: 10.1016/j.saa.2021.119564] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/24/2021] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
The microwave spectrum of 3,4-dimethylfluorobenzene was measured using a pulsed molecular jet Fourier transform microwave spectrometer operating in the frequency range from 2.0 to 26.5 GHz with the goal of quantifying steric effects on barriers to internal rotation of the two inequivalent methyl groups. Due to these torsional motions, splittings of all rotational transitions into quintets were observed and fitted with residuals close to measurement accuracy. The experimental work was supported by quantum chemical calculations, and the B3LYP-D3BJ/6-311++G(d,p) level of theory yielded accurate optimized geometry parameters to guide the assignment. The three-fold potential values of 456.20(13) cm-1 and 489.78(15) cm-1 for the methyl groups at the meta and para position, respectively, deduced from the experiments are compared with the predicted values and those of other toluene derivatives.
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Affiliation(s)
- Julie Mélan
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Université Paris-Est Créteil, Université de Paris, Institut Pierre Simon Laplace, 61 avenue du Général de Gaulle, 94010 Créteil, France
| | - Safa Khemissi
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Université Paris-Est Créteil, Université de Paris, Institut Pierre Simon Laplace, 61 avenue du Général de Gaulle, 94010 Créteil, France
| | - Ha Vinh Lam Nguyen
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Université Paris-Est Créteil, Université de Paris, Institut Pierre Simon Laplace, 61 avenue du Général de Gaulle, 94010 Créteil, France; Institut Universitaire de France (IUF), 1 rue Descartes, 75231 Paris cedex 05, France.
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4
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Nguyen HVL, Andresen M, Stahl W. Conformational sampling and large amplitude motion of methyl valerate. Phys Chem Chem Phys 2021; 23:2930-2937. [PMID: 33480919 DOI: 10.1039/d0cp06057g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The microwave spectrum of the fruit ester methyl valerate was recorded using two molecular jet Fourier transform spectrometers covering the frequency range from 2 to 40 GHz. Quantum chemical calculations yielded 11 minima for the anti ester configuration, among them two were identified in the experimental spectrum. The methyl group in the methoxy moiety undergoes internal rotation, leading to torsional splittings of all rotational transitions into doublets. The barrier to internal rotation of the methoxy methyl group was deduced to be 417.724(70) cm-1 and 418.059(27) cm-1 for the C1 and the Cs conformer, respectively, essentially the same values as those in methyl alkanoates with shorter alkyl chains, which are methyl acetate, methyl propionate and methyl butyrate. Geometry parameters such as the rotational and centrifugal distortion constants could be determined with very high accuracy. Optimisations at different levels of theory were performed for a comparison with the experimental results. The MP2/6-311++G(d,p) level of theory failed to calculate reliable rotational constants to guide the assigment of the C1 conformer, while the MP2/cc-pVDZ level fully succeeded.
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Affiliation(s)
- Ha Vinh Lam Nguyen
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Université Paris-Est Créteil, Université Paris Diderot, Institut Pierre Simon Laplace, 61 avenue du Général de Gaulle, F-94010 Créteil cedex, France. and Institut Universitaire de France (IUF), 1 rue Descartes, 75231 Paris cedex 05, France
| | - Maike Andresen
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Université Paris-Est Créteil, Université Paris Diderot, Institut Pierre Simon Laplace, 61 avenue du Général de Gaulle, F-94010 Créteil cedex, France. and Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen, Germany
| | - Wolfgang Stahl
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen, Germany
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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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Nguyen HVL, Kleiner I. Understanding (coupled) large amplitude motions: the interplay of microwave spectroscopy, spectral modeling, and quantum chemistry. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2020-0037] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Abstract
A large variety of molecules contain large amplitude motions (LAMs), inter alia internal rotation and inversion tunneling, resulting in tunneling splittings in their rotational spectrum. We will present the modern strategy to study LAMs using a combination of molecular jet Fourier transform microwave spectroscopy, spectral modeling, and quantum chemical calculations to characterize such systems by the analysis of their rotational spectra. This interplay is particularly successful in decoding complex spectra revealing LAMs and providing reference data for fundamental physics, astrochemistry, atmospheric/environmental chemistry and analytics, or fundamental researches in physical chemistry. Addressing experimental key aspects, a brief presentation on the two most popular types of state-of-the-art Fourier transform microwave spectrometer technology, i.e., pulsed supersonic jet expansion–based spectrometers employing narrow-band pulse or broad-band chirp excitation, will be given first. Secondly, the use of quantum chemistry as a supporting tool for rotational spectroscopy will be discussed with emphasis on conformational analysis. Several computer codes for fitting rotational spectra exhibiting fine structure arising from LAMs are discussed with their advantages and drawbacks. Furthermore, a number of examples will provide an overview on the wealth of information that can be drawn from the rotational spectra, leading to new insights into the molecular structure and dynamics. The focus will be on the interpretation of potential barriers and how LAMs can act as sensors within molecules to help us understand the molecular behavior in the laboratory and nature.
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Affiliation(s)
- Ha Vinh Lam Nguyen
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583 , Université Paris-Est Créteil, Université de Paris, Institut Pierre Simon Laplace , 61 avenue du Général de Gaulle, F-94010 , Créteil , France
- Institut Universitaire de France (IUF) , 1 rue Descartes, F-75231 Paris cedex 05, France
| | - Isabelle Kleiner
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583 , Université Paris-Est Créteil, Université de Paris, Institut Pierre Simon Laplace , 61 avenue du Général de Gaulle, F-94010 , Créteil , France
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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; 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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8
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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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9
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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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10
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Wang P, Hu Y, Zhan H, Chen J. Gas-phase conformational preference of the smallest saccharide (glycolaldehyde) and its hydrated complexes with bridged hydrogen bonding. RSC Adv 2017. [DOI: 10.1039/c6ra26965f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Glycoaldehyde (GA, HOCH2CHO) is the simplest sugar unit of the carbohydrates and the only sugar to have been detected in interstellar space to date.
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Affiliation(s)
- Pengchao Wang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science
- College of Biophotonics
- South China Normal University
- Guangzhou 510631
- P. R. China
| | - Yongjun Hu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science
- College of Biophotonics
- South China Normal University
- Guangzhou 510631
- P. R. China
| | - Huaqi Zhan
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science
- College of Biophotonics
- South China Normal University
- Guangzhou 510631
- P. R. China
| | - Jiaxin Chen
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science
- College of Biophotonics
- South China Normal University
- Guangzhou 510631
- P. R. China
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11
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Loru D, Quesada-Moreno MM, Avilés-Moreno JR, Jarman N, Huet TR, López-González JJ, Sanz ME. Conformational Flexibility of Limonene Oxide Studied By Microwave Spectroscopy. Chemphyschem 2016; 18:274-280. [DOI: 10.1002/cphc.201600991] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/17/2016] [Indexed: 01/11/2023]
Affiliation(s)
- Donatella Loru
- Department of Chemistry; King's College London; London United Kingdom
| | - María Mar Quesada-Moreno
- University of Jaen; Department of Physical and Analytical Chemistry; Campus Las Lagunillas E-23071 Jaen Spain
- PhLAM, UMR8523 CNRS-; Université Lille 1; Bâtiment P5 F-59655 Villeneuve D'Ascq Cedex France
| | | | - Natasha Jarman
- Department of Chemistry; King's College London; London United Kingdom
| | - Thérèse R. Huet
- PhLAM, UMR8523 CNRS-; Université Lille 1; Bâtiment P5 F-59655 Villeneuve D'Ascq Cedex France
| | - Juan Jesús López-González
- University of Jaen; Department of Physical and Analytical Chemistry; Campus Las Lagunillas E-23071 Jaen Spain
| | - M. Eugenia Sanz
- Department of Chemistry; King's College London; London United Kingdom
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12
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Zinn S, Medcraft C, Betz T, Schnell M. High‐Resolution Rotational Spectroscopy Study of the Smallest Sugar Dimer: Interplay of Hydrogen Bonds in the Glycolaldehyde Dimer. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sabrina Zinn
- Max Planck Institute for the Structure and Dynamics of Matter Luruper Chaussee 149 22761 Hamburg Germany
- The Hamburg Centre for Ultrafast Imaging Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany
| | - Chris Medcraft
- School of Chemistry Newcastle University Newcastle upon Tyne UK
| | - Thomas Betz
- Max Planck Institute for the Structure and Dynamics of Matter Luruper Chaussee 149 22761 Hamburg Germany
- The Hamburg Centre for Ultrafast Imaging Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany
| | - Melanie Schnell
- Max Planck Institute for the Structure and Dynamics of Matter Luruper Chaussee 149 22761 Hamburg Germany
- The Hamburg Centre for Ultrafast Imaging Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany
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13
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Zinn S, Medcraft C, Betz T, Schnell M. High‐Resolution Rotational Spectroscopy Study of the Smallest Sugar Dimer: Interplay of Hydrogen Bonds in the Glycolaldehyde Dimer. Angew Chem Int Ed Engl 2016; 55:5975-80. [DOI: 10.1002/anie.201511077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 02/16/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Sabrina Zinn
- Max Planck Institute for the Structure and Dynamics of Matter Luruper Chaussee 149 22761 Hamburg Germany
- The Hamburg Centre for Ultrafast Imaging Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany
| | - Chris Medcraft
- School of Chemistry Newcastle University Newcastle upon Tyne UK
| | - Thomas Betz
- Max Planck Institute for the Structure and Dynamics of Matter Luruper Chaussee 149 22761 Hamburg Germany
- The Hamburg Centre for Ultrafast Imaging Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany
| | - Melanie Schnell
- Max Planck Institute for the Structure and Dynamics of Matter Luruper Chaussee 149 22761 Hamburg Germany
- The Hamburg Centre for Ultrafast Imaging Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany
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14
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Schnitzler EG, Zenchyzen BLM, Jäger W. Rotational spectroscopy of the atmospheric photo-oxidation product o-toluic acid and its monohydrate. Phys Chem Chem Phys 2016; 18:448-57. [PMID: 26616640 DOI: 10.1039/c5cp06073g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
o-Toluic acid, a photo-oxidation product in the atmosphere, and its monohydrate were characterized in the gas phase by pure rotational spectroscopy. High-resolution spectra were measured in the range of 5-14 Hz using a cavity-based molecular beam Fourier-transform microwave spectrometer. Possible conformers were identified computationally, at the MP2/6-311++G(2df,2pd) level of theory. For both species, one conformer was identified experimentally, and no methyl internal rotation splittings were observed, indicative of relatively high barriers to rotation. In the monomer, rocking of the carboxylic acid group is a large amplitude motion, characterized by a symmetrical double-well potential. This and other low-lying out-of-plane vibrations contribute to a significant (methyl top-corrected) inertial defect (-1.09 amu Å(2)). In the monohydrate, wagging of the free hydrogen atom of water is a second large amplitude motion, so the average structure is planar. As a result, no c-type transitions were observed. Water tunneling splittings were not observed, because the water rotation coordinate is characterized by an asymmetrical double-well potential. Since the minima are not degenerate, tunneling is precluded. Furthermore, a concerted tunneling path involving simultaneous rotation of the water moiety and rocking of the carboxylic acid group is precluded, because the hilltop along this coordinate is a virtual, rather than a real, saddle-point. Inter- and intramolecular non-covalent bonding is discussed in terms of the quantum theory of atoms in molecules. The percentage of o-toluic acid hydrated in the atmosphere is estimated to be about 0.1% using statistical thermodynamics.
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Affiliation(s)
- Elijah G Schnitzler
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada.
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15
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Interconversion of host–guest components in supramolecular assemblies of polycarboxylic acids and reduced Schiff bases. Struct Chem 2015. [DOI: 10.1007/s11224-015-0699-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Bharti A, Banerjee T. Solubility prediction of bio-oil derived chemicals in aqueous media by Localized Molecular Orbital-Energy Decomposition Analysis (LMO-EDA) and COSMO-RS predictions. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.05.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Azofra LM, Quesada-Moreno MM, Alkorta I, Avilés-Moreno JR, Elguero J, López-González JJ. Understanding the Aldo-Enediolate Tautomerism of Glycolaldehyde in Basic Aqueous Solutions. Chemphyschem 2015; 16:2226-36. [DOI: 10.1002/cphc.201500139] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Indexed: 11/12/2022]
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18
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Jin L, Liu K, Aoki Y. Interaction of OH− with xylan and its hydrated complexes: structures and molecular dynamics study using elongation method. J Mol Model 2015; 21:117. [DOI: 10.1007/s00894-015-2666-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 03/23/2015] [Indexed: 10/23/2022]
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Nguyen HVL, Jabri A, Van V, Stahl W. Methyl Internal Rotation in the Microwave Spectrum of Vinyl Acetate. J Phys Chem A 2014; 118:12130-6. [DOI: 10.1021/jp5075829] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ha Vinh Lam Nguyen
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen, Germany
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583/IPSL et Universités Paris Est UPEC & Paris Diderot UPD, Université de Paris Est, 61 avenue du Général de Gaulle, F-94010 Créteil cedex, France
| | - Atef Jabri
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583/IPSL et Universités Paris Est UPEC & Paris Diderot UPD, Université de Paris Est, 61 avenue du Général de Gaulle, F-94010 Créteil cedex, France
| | - Vinh Van
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen, Germany
| | - Wolfgang Stahl
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen, Germany
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20
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Bouchet A, Altnöder J, Broquier M, Zehnacker A. IR–UV spectroscopy of jet-cooled 1-indanol: Restriction of the conformational space by hydration. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.07.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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21
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Potapov A, Asselin P. High-resolution jet spectroscopy of weakly bound binary complexes involving water. INT REV PHYS CHEM 2014. [DOI: 10.1080/0144235x.2014.932578] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Altnöder J, Lee JJ, Otto KE, Suhm MA. Molecular recognition in glycolaldehyde, the simplest sugar: two isolated hydrogen bonds win over one cooperative pair. ChemistryOpen 2012; 1:269-75. [PMID: 24551516 PMCID: PMC3922484 DOI: 10.1002/open.201200031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Indexed: 11/19/2022] Open
Abstract
Carbohydrates are used in nature as molecular recognition tools. Understanding their conformational behavior upon aggregation helps in rationalizing the way in which cells and bacteria use sugars to communicate. Here, the simplest α-hydroxy carbonyl compound, glycolaldehyde, was used as a model system. It was shown to form compact polar C2-symmetric dimers with intermolecular O–H⋅⋅⋅O=C bonds, while sacrificing the corresponding intramolecular hydrogen bonds. Supersonic jet infrared (IR) and Raman spectra combined with high-level quantum chemical calculations provide a consistent picture for the preference over more typical hydrogen bond insertion and addition patterns. Experimental evidence for at least one metastable dimer is presented. A rotational spectroscopy investigation of these dimers is encouraged, also in view of astrophysical searches. The binding motif competition of aldehydic sugars might play a role in chirality recognition phenomena of more complex derivatives in the gas phase.
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Affiliation(s)
- Jonas Altnöder
- Institut für Physikalische Chemie, Universität Göttingen Tammannstr. 6, 37077 Göttingen (Germany) E-mail:
| | - Juhyon J Lee
- Institut für Physikalische Chemie, Universität Göttingen Tammannstr. 6, 37077 Göttingen (Germany) E-mail:
| | - Katharina E Otto
- Institut für Physikalische Chemie, Universität Göttingen Tammannstr. 6, 37077 Göttingen (Germany) E-mail:
| | - Martin A Suhm
- Institut für Physikalische Chemie, Universität Göttingen Tammannstr. 6, 37077 Göttingen (Germany) E-mail:
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Moreno JRA, Huet TR, González JJL. Conformational relaxation of S-(+)-carvone and R-(+)-limonene studied by microwave Fourier transform spectroscopy and quantum chemical calculations. Struct Chem 2012. [DOI: 10.1007/s11224-012-0142-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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24
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Jin L, Simons JP, Gerber RB. Structures of the xylose–water complex: Energetics, transitions between conformers and spectroscopy. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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25
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Biswal HS, Loquais Y, Tardivel B, Gloaguen E, Mons M. Isolated monohydrates of a model peptide chain: effect of a first water molecule on the secondary structure of a capped phenylalanine. J Am Chem Soc 2011; 133:3931-42. [PMID: 21361380 DOI: 10.1021/ja108643p] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The formation of monohydrates of capped phenylalanine model peptides, CH(3)-CO-Phe-NH(2) and CH(3)-CO-Phe-NH-CH(3), in a supersonic expansion has been investigated using laser spectroscopy and quantum chemistry methods. Conformational distributions of the monohydrates have been revealed by IR/UV double-resonance spectroscopy and their structures assigned by comparison with DFT-D calculations. A careful analysis of the final hydrate distribution together with a detailed theoretical investigation of the potential energy surface of the monohydrates demonstrates that solvation occurs from the conformational distribution of the isolated peptide monomers. The distribution of the monohydrates appears to be strongly dependent on both the initial monomer conformation (extended or folded backbone) and the solvation site initially occupied by the water molecule. The solvation processes taking place during the cooling can be categorized as follows: (a) solvation without significant structural changes of the peptide, (b) solvation inducing significant distortions of the backbone but retaining the secondary structure, and (c) solvation triggering backbone isomerizations, leading to a modification of the peptide secondary structure. It is observed that solvation by a single water molecule can fold a β-strand into a γ-turn structure (type c) or induce a significant opening of a γ-turn characterized by an elongated C(7) hydrogen bond (type b). These structural changes can be considered as a first step toward the polyproline II condensed-phase structure, illustrating the role played by the very first water molecule in the solvation process.
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Affiliation(s)
- Himansu S Biswal
- Laboratoire Francis Perrin, CEA/DSM/IRAMIS/SPAM-CNRS URA 2453, CEA/Saclay, 91191 Gif-sur-Yvette, France
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26
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Madebène B, Asselin P, Soulard P, Alikhani ME. Axial and equatorial hydrogen-bond conformers between (CH2)3S and H(D)F: Fourier transform infrared spectroscopy and ab initio calculations. Phys Chem Chem Phys 2011; 13:14202-14. [DOI: 10.1039/c1cp20668k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- B Madebène
- UPMC Univ. Paris 06, UMR 7075, Laboratoire de Dynamique, Interactions et Réactivité (LADIR), F-75005, Paris, France
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Meng Q, Zhang C, Huang MB. A theoretical model study on the cyclic reaction of 4-hydroxybutanal catalyzed by Brønsted acid. CAN J CHEM 2009. [DOI: 10.1139/v09-126] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
For a theoretical model study on the cyclic reaction of 4-hydroxybutanal (4-OH-BL), we have examined five assumed reaction pathways (I–V) by performing the B3LYP calculations in the gas phase and self-consistent isodensity polarized continuum model (SCIPCM)-B3LYP calculations in aqueous solution. Pathways II (4-OH-BL + H+), III (4-OH-BL + H3O+), and IV (4-OH-BL + H3O+ + H2O) represent three models for the cyclic reaction catalyzed by Brønsted acids. The present study leads to the following conclusions concerning the five pathways (mainly on the basis of the calculation results in the solution). The high barrier along pathway I (with no catalyst) implies that the reaction does not occur without a catalyst, and the extremely large stabilization energy of the intermediate implies that pathway II is not a realistic model for the reaction catalyzed by Brønsted acid. Along pathway III, there are two intermediates and a transition state in between, and they are 10–16 kcal/mol lower in energy than the reactants (4-OH-BL + H3O+). Along pathway IV, there is only one intermediate, and it is 20.6 kcal/mol lower in energy than the reactants (4-OH-BL + H3O+ + H2O). Pathways III and IV are predicted to be feasible. Energetically, pathway IV is more favourable than pathway III and it is considered as a rational model for the cyclic reaction of 4-OH-BL catalyzed by Brønsted acid. Our calculations for pathway V (catalyzed by H2O) indicate that the water molecule may also serve as a catalyst for the cyclic reaction. The transition state along pathway V is 20.0 kcal/mol higher in energy than the reactants (4-OH-BL + H2O), and one can clearly see the “proton wire” in its structure. Our calculations show strong solvent effects on energetics of the charged intermediates along pathways II, III, and IV.
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Affiliation(s)
- Qingyong Meng
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, P.O. Box 4588, Beijing 100049, P. R. China
| | - Chenggen Zhang
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, P.O. Box 4588, Beijing 100049, P. R. China
| | - Ming-Bao Huang
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, P.O. Box 4588, Beijing 100049, P. R. China
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Hu Y, Bernstein ER. Vibrational and Photoionization Spectroscopy of Neutral Valine Clusters. J Phys Chem A 2009; 113:8454-61. [DOI: 10.1021/jp901208f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yongjun Hu
- MOE Key Lab of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou 510631, P. R. China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872
| | - Elliot R. Bernstein
- MOE Key Lab of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou 510631, P. R. China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872
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Avilés Moreno JR, Partal Ureña F, López González JJ, Huet TR. Terpenes in the gas phase: The structural conformation of S-(–)-perillaldehyde investigated by microwave spectroscopy and quantum chemical calculations. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.03.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Giuliano B, Melandri S, Maris A, Favero L, Caminati W. Adducts of NH3with the Conformers of Glycidol: A Rotational Spectroscopy Study. Angew Chem Int Ed Engl 2009; 48:1102-5. [DOI: 10.1002/anie.200805104] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Adducts of NH3with the Conformers of Glycidol: A Rotational Spectroscopy Study. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Cai K, Wang J. Multiple Anharmonic Vibrational Probes of Sugar Structure and Dynamics. J Phys Chem B 2009; 113:1681-92. [DOI: 10.1021/jp8070025] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kaicong Cai
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Jianping Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
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Cuisset A, Mouret G, Pirali O, Roy P, Cazier F, Nouali H, Demaison J. Gas-Phase Vibrational Spectroscopy and Ab Initio Study of Organophosphorous Compounds: Discrimination between Species and Conformers. J Phys Chem B 2008; 112:12516-25. [DOI: 10.1021/jp804665h] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Cuisset
- Laboratoire de Physico-Chimie de l’Atmosphère CNRS UMR 8101, Université du Littoral Côte d’Opale, 189 A Ave. Maurice Schumann, 59140 Dunkerque, France, Ligne AILES (Advanced InfraRed Line Exploited for Spectroscopy), Synchrotron SOLEIL, L’Orme des Merisiers, Saint Aubin, BP 48, 91192 Gif-sur-Yvette, France, Laboratoire de PhotoPhysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay Cedex, Centre Commun de Mesures, Bâtiment MREI1, Université du Littoral Côte d’Opale, 145 Ave. Maurice
| | - G. Mouret
- Laboratoire de Physico-Chimie de l’Atmosphère CNRS UMR 8101, Université du Littoral Côte d’Opale, 189 A Ave. Maurice Schumann, 59140 Dunkerque, France, Ligne AILES (Advanced InfraRed Line Exploited for Spectroscopy), Synchrotron SOLEIL, L’Orme des Merisiers, Saint Aubin, BP 48, 91192 Gif-sur-Yvette, France, Laboratoire de PhotoPhysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay Cedex, Centre Commun de Mesures, Bâtiment MREI1, Université du Littoral Côte d’Opale, 145 Ave. Maurice
| | - O. Pirali
- Laboratoire de Physico-Chimie de l’Atmosphère CNRS UMR 8101, Université du Littoral Côte d’Opale, 189 A Ave. Maurice Schumann, 59140 Dunkerque, France, Ligne AILES (Advanced InfraRed Line Exploited for Spectroscopy), Synchrotron SOLEIL, L’Orme des Merisiers, Saint Aubin, BP 48, 91192 Gif-sur-Yvette, France, Laboratoire de PhotoPhysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay Cedex, Centre Commun de Mesures, Bâtiment MREI1, Université du Littoral Côte d’Opale, 145 Ave. Maurice
| | - P. Roy
- Laboratoire de Physico-Chimie de l’Atmosphère CNRS UMR 8101, Université du Littoral Côte d’Opale, 189 A Ave. Maurice Schumann, 59140 Dunkerque, France, Ligne AILES (Advanced InfraRed Line Exploited for Spectroscopy), Synchrotron SOLEIL, L’Orme des Merisiers, Saint Aubin, BP 48, 91192 Gif-sur-Yvette, France, Laboratoire de PhotoPhysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay Cedex, Centre Commun de Mesures, Bâtiment MREI1, Université du Littoral Côte d’Opale, 145 Ave. Maurice
| | - F. Cazier
- Laboratoire de Physico-Chimie de l’Atmosphère CNRS UMR 8101, Université du Littoral Côte d’Opale, 189 A Ave. Maurice Schumann, 59140 Dunkerque, France, Ligne AILES (Advanced InfraRed Line Exploited for Spectroscopy), Synchrotron SOLEIL, L’Orme des Merisiers, Saint Aubin, BP 48, 91192 Gif-sur-Yvette, France, Laboratoire de PhotoPhysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay Cedex, Centre Commun de Mesures, Bâtiment MREI1, Université du Littoral Côte d’Opale, 145 Ave. Maurice
| | - H. Nouali
- Laboratoire de Physico-Chimie de l’Atmosphère CNRS UMR 8101, Université du Littoral Côte d’Opale, 189 A Ave. Maurice Schumann, 59140 Dunkerque, France, Ligne AILES (Advanced InfraRed Line Exploited for Spectroscopy), Synchrotron SOLEIL, L’Orme des Merisiers, Saint Aubin, BP 48, 91192 Gif-sur-Yvette, France, Laboratoire de PhotoPhysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay Cedex, Centre Commun de Mesures, Bâtiment MREI1, Université du Littoral Côte d’Opale, 145 Ave. Maurice
| | - J. Demaison
- Laboratoire de Physico-Chimie de l’Atmosphère CNRS UMR 8101, Université du Littoral Côte d’Opale, 189 A Ave. Maurice Schumann, 59140 Dunkerque, France, Ligne AILES (Advanced InfraRed Line Exploited for Spectroscopy), Synchrotron SOLEIL, L’Orme des Merisiers, Saint Aubin, BP 48, 91192 Gif-sur-Yvette, France, Laboratoire de PhotoPhysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay Cedex, Centre Commun de Mesures, Bâtiment MREI1, Université du Littoral Côte d’Opale, 145 Ave. Maurice
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Sugars in the gas phase: The conformational properties of erythrose, threose, and erythrulose characterized by quantum chemistry calculations. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.theochem.2008.02.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Rey M, Aviles-Moreno J, Huet T. The hyperfine structure of sugars investigated by microwave spectroscopy and quantum chemical calculations. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.08.101] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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