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Czarnecki MA, Beć KB, Grabska J, Huck CW, Mazurek S, Orzechowski K. State of water in various environments: Aliphatic ketones. MIR/NIR spectroscopic, dielectric and theoretical studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123057. [PMID: 37451212 DOI: 10.1016/j.saa.2023.123057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/16/2023] [Accepted: 06/19/2023] [Indexed: 07/18/2023]
Abstract
This work provides new insight into the state of water in a series of aliphatic ketones. For our studies, we selected nine aliphatic ketones of different size and structure to examine the effect of various structural motifs on behavior of water in the mixtures. Our results reveal that conformational flexibility of aliphatic chains in the linear ketones allows for effective shielding of the carbonyl group, and this flexibility is the main reason for poor solubility of water. Hence, in the linear ketones molecules of water are involved mostly in ketone-water interactions, while the water-water interactions are rare. Higher solubility of water in the cyclic ketones allows for creation of clusters of water, where the molecules are in water-like environment. The temperature rise in wet cyclic ketones increases population of ketone-water interactions at the expense of the water-water ones, while in the linear ketones and 2,6-dimethylcyclohexanone at an elevated temperature there is an increase in the population of singly bonded water at the expense of the doubly bonded one. DFT calculations reveal that the substitution of cyclohexanone by a single methyl group does not affect the strength of the ketone-water interactions, while it has a significant impact on the solubility of water in the ketone. The most important conclusion from this study is that the accessibility of the carbonyl group is the most important factor determining the intermolecular interactions and solubility of water in aliphatic ketones.
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Affiliation(s)
| | - Krzysztof B Beć
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, A6020 Innsbruck, Austria
| | - Justyna Grabska
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, A6020 Innsbruck, Austria
| | - Christian W Huck
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innrain 80-82, A6020 Innsbruck, Austria
| | - Sylwester Mazurek
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Kazimierz Orzechowski
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
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2
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Gao T, Lei J, Zou S, Wang C, Xu X, Gou Q. Conformational equilibria and interaction preference in the complex of isoprene-maleic anhydride. Phys Chem Chem Phys 2023; 25:27798-27804. [PMID: 37814807 DOI: 10.1039/d3cp03712f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
The rotational spectrum of the isoprene-maleic anhydride complex has been investigated by pulsed jet Fourier transform microwave spectroscopy and interpreted with complementary quantum chemical calculations. Theoretical predictions have yielded four plausible isomers, all residing within an energy window of 12 kJ mol-1. However, two distinct isomers characterized by a π-π stacked configuration have been experimentally observed in pulsed jets, which have differed in the orientation of isoprene over maleic anhydride. The relative population ratio of the two detected isomers has been estimated to be NI/NII ≈ 3/1 from rigorous measurements of the relative intensity on a set of μc-type transitions. Remarkably, this study underscores the pivotal role played by the interaction between the CC bonding orbital (π) of isoprene and the CC antibonding orbital (π*) of maleic anhydride in stabilizing the target complex.
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Affiliation(s)
- Tianyue Gao
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China.
| | - Juncheng Lei
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China.
| | - Siyu Zou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China.
| | - Chenxu Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China.
| | - Xuefang Xu
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China.
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China
| | - Qian Gou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China.
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China
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Xie F, Sun W, Pinacho P, Schnell M. CO 2 Aggregation on Monoethanolamine: Observations from Rotational Spectroscopy. Angew Chem Int Ed Engl 2023; 62:e202218539. [PMID: 36719030 DOI: 10.1002/anie.202218539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/01/2023]
Abstract
The initial stages of the gas-phase nucleation between CO2 and monoethanolamine were investigated via broadband rotational spectroscopy with the aid of extensive theoretical structure sampling. Sub-nanometer-scale aggregation patterns of monoethanolamine-(CO2 )n , n=1-4, were identified. An interesting competition between the monoethanolamine intramolecular hydrogen bond and the intermolecular interactions between monoethanolamine and CO2 upon cluster growth was discovered, revealing an intriguing CO2 binding priority to the hydroxyl group over the amine group. These findings are in sharp contrast to the general results for aqueous solutions. In the quinary complex, a cap-like CO2 tetramer was observed cooperatively surrounding the monoethanolamine. As the cluster approaches the critical size of new particle formation, the contribution of CO2 self-assembly to the overall stability increases.
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Affiliation(s)
- Fan Xie
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Wenhao Sun
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Pablo Pinacho
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Melanie Schnell
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany.,Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 1, 24118, Kiel, Germany
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Baweja S, Antonelli E, Hussain S, Fernández-Ramos A, Kleiner I, Nguyen HVL, Sanz ME. Revealing Internal Rotation and 14N Nuclear Quadrupole Coupling in the Atmospheric Pollutant 4-Methyl-2-nitrophenol: Interplay of Microwave Spectroscopy and Quantum Chemical Calculations. Molecules 2023; 28:molecules28052153. [PMID: 36903397 PMCID: PMC10004196 DOI: 10.3390/molecules28052153] [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: 01/31/2023] [Revised: 02/17/2023] [Accepted: 02/17/2023] [Indexed: 03/02/2023] Open
Abstract
The structure and interactions of oxygenated aromatic molecules are of atmospheric interest due to their toxicity and as precursors of aerosols. Here, we present the analysis of 4-methyl-2-nitrophenol (4MNP) using chirped pulse and Fabry-Pérot Fourier transform microwave spectroscopy in combination with quantum chemical calculations. The rotational, centrifugal distortion, and 14N nuclear quadrupole coupling constants of the lowest-energy conformer of 4MNP were determined as well as the barrier to methyl internal rotation. The latter has a value of 106.4456(8) cm-1, significantly larger than those from related molecules with only one hydroxyl or nitro substituent in the same para or meta positions, respectively, as 4MNP. Our results serve as a basis to understand the interactions of 4MNP with atmospheric molecules and the influence of the electronic environment on methyl internal rotation barrier heights.
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Affiliation(s)
- Shefali Baweja
- Department of Chemistry, King’s College London, Britannia House, 7 Trinity Street, London SE1 1DB, UK
| | - Eleonore Antonelli
- Université Paris Est Créteil and Université Paris Cité, CNRS, LISA, F-94010 Créteil, France
| | - Safia Hussain
- Department of Chemistry, King’s College London, Britannia House, 7 Trinity Street, London SE1 1DB, UK
| | - Antonio Fernández-Ramos
- Departamento de Química Física and Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Jenaro de la Fuente s/n, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Isabelle Kleiner
- Université Paris Cité and Université Paris Est Créteil, CNRS, LISA, F-75013 Paris, France
| | - Ha Vinh Lam Nguyen
- Université Paris Est Créteil and Université Paris Cité, CNRS, LISA, F-94010 Créteil, France
- Institut Universitaire de France (IUF), 1 rue Descartes, F-75231 Paris, France
- Correspondence: (H.V.L.N.); (M.E.S.)
| | - M. Eugenia Sanz
- Department of Chemistry, King’s College London, Britannia House, 7 Trinity Street, London SE1 1DB, UK
- Correspondence: (H.V.L.N.); (M.E.S.)
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Li J, Wang X, Zhang X, Chen J, Wang H, Tian X, Xu X, Gou Q. Stepwise hydrations of anhydride tuned by hydrogen bonds: rotational study on maleic anhydride-(H 2O) 1-3. Phys Chem Chem Phys 2023; 25:4611-4616. [PMID: 36723184 DOI: 10.1039/d2cp05861h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The rotational spectra of maleic anhydride-(H2O)1-3 have been investigated for the first time by using pulsed jet Fourier transform microwave spectroscopy with complementary computational analyses. The experimental evidence points out that water tends to self-aggregate with hydrogen bonds and form homodromic cycles. Differences in bond lengths and charge distribution between the two carbonyl sites have been observed upon stepwise hydrations, which might further introduce a selectivity on the nucleophilic attack sites of hydrolysis. This study provides an important insight into the incipient solvation process (microsolvation) of maleic anhydride in water by understanding the cooperation and rearrangement of intermolecular hydrogen bonds in its stepwise hydrates.
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Affiliation(s)
- Jiayi Li
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
| | - Xiujuan Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
| | - Xinyue Zhang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
| | - Junhua Chen
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China. .,School of Pharmacy, Guizhou Medical University, Guiyang, 550000, Guizhou, China
| | - Hao Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
| | - Xiao Tian
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
| | - Xuefang Xu
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
| | - Qian Gou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
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Tsoi VWY, Burevschi E, Saxena S, Sanz ME. Conformational Panorama of Cycloundecanone: A Rotational Spectroscopy Study. J Phys Chem A 2022; 126:6185-6193. [PMID: 35998622 PMCID: PMC9483976 DOI: 10.1021/acs.jpca.2c04855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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The conformational landscape of the medium-size cyclic
ketone cycloundecanone
has been investigated using chirped-pulse Fourier transform microwave
spectroscopy and computational calculations. Nine conformations were
observed in the rotational spectrum and identified from the comparison
of experimental and theoretical rotational constants as well as the
observed and predicted types of rotational transitions. All singly
substituted 13C isotopologues were observed for the most
abundant conformer, which allowed the determination of partial substitution
and effective structures. The most abundant conformer dominates the
rotational spectrum and is almost 40 times more abundant than the
least abundant conformer. Conformational preferences are governed
by the combination of transannular H···H and eclipsed
HCCH interactions.
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Affiliation(s)
- Valerie W Y Tsoi
- Department of Chemistry, King's College London, London SE1 1DB, United Kingdom
| | - Ecaterina Burevschi
- Department of Chemistry, King's College London, London SE1 1DB, United Kingdom
| | - Shefali Saxena
- Department of Chemistry, King's College London, London SE1 1DB, United Kingdom
| | - M Eugenia Sanz
- Department of Chemistry, King's College London, London SE1 1DB, United Kingdom
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Murugachandran SI, Sanz ME. Interactions of limonene with the water dimer. Phys Chem Chem Phys 2022; 24:26529-26538. [DOI: 10.1039/d2cp04174j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The interactions of limonene with the water dimer have been characterised through the identification of seven different isomers.
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Affiliation(s)
| | - M. Eugenia Sanz
- Department of Chemistry, King's College London, London, SE1 1DB, UK
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Fischer TLL, Bödecker MADI, Zehnacker A, Mata RA, Suhm MA. Setting up the HyDRA blind challenge for the microhydration of organic molecules. Phys Chem Chem Phys 2022; 24:11442-11454. [DOI: 10.1039/d2cp01119k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The procedure leading to the first HyDRA blind challenge for the prediction of water donor stretching vibrations in monohydrates of organic molecules is described. A training set of 10 monohydrates...
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Bis(2-Cyclooctylidenehydrazene-1-carbothioamide)Zinc(II), a good single source precursor for ZnS nanoparticles – Synthesis and crystal structure. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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