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Li W, Heras D, Maris A, Melandri S, Lesarri A, Evangelisti L. A Rotational Study of 2-tert-Butylphenol and Its 1 : 1 Argon Complex. Chemphyschem 2024:e202400089. [PMID: 38502679 DOI: 10.1002/cphc.202400089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/15/2024] [Accepted: 03/18/2024] [Indexed: 03/21/2024]
Abstract
The chirped-pulse Fourier Transform microwave spectrum of 2-tert-butylphenol, an industrial intermediate for the production of antioxidants, has been investigated in the 2-8 GHz frequency range. The spectral analysis has allowed obtaining precise structural information on the most stable conformer and its complex with argon. The conformation of the monomer reveals that the hydroxyl group is coplanar with the ring but points in the opposite direction to the tert-butyl group, reducing steric interactions. In the tert-butyl group one methyl group is coplanar and the other two are symmetrically staggered respect to the ring. The complex shows the rare gas sitting above the aromatic ring. Interestingly, neither the monomer nor the complex exhibit large-amplitude hydroxyl torsion motions, previously observed in 2,6-disubstituted phenols such as 2,6-di-tert-butylphenol or propofol. The experimental results are supported by computational calculations, validating the molecular structure. Additionally, symmetry-adapted perturbation theory has allowed determining the van der Waals intermolecular interaction energy of the complex.
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Affiliation(s)
- Wenqin Li
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias -, I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén 7, 47011, Valladolid, Spain
| | - Domingo Heras
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias -, I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén 7, 47011, Valladolid, Spain
| | - Assimo Maris
- Department of Chemistry "G. Ciamician", University of Bologna, Via F. Selmi 2, 40126, Bologna, Italy
| | - Sonia Melandri
- Department of Chemistry "G. Ciamician", University of Bologna, Via F. Selmi 2, 40126, Bologna, Italy
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias -, I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén 7, 47011, Valladolid, Spain
| | - Luca Evangelisti
- Department of Chemistry "G. Ciamician", University of Bologna, Via F. Selmi 2, 40126, Bologna, Italy
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Li W, Maris A, Melandri S, Lesarri A, Evangelisti L. The Structure of 2,6-Di- tert-butylphenol-Argon by Rotational Spectroscopy. Molecules 2023; 28:8111. [PMID: 38138596 PMCID: PMC10745844 DOI: 10.3390/molecules28248111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/27/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
The molecular structure of a van der Waals-bonded complex involving 2,6-di-tert-butylphenol and a single argon atom has been determined through rotational spectroscopy. The experimentally derived structural parameters were compared to the outcomes of quantum chemical calculations that can accurately account for dispersive interactions in the cluster. The findings revealed a π-bound configuration for the complex, with the argon atom engaging the aromatic ring. The microwave spectrum reveals both fine and hyperfine tunneling components. The main spectral doubling is evident as two distinct clusters of lines, with an approximate separation of 179 MHz, attributed to the torsional motion associated with the hydroxyl group. Additionally, each component of this doublet further splits into three components, each with separations measuring less than 1 MHz. Investigation into intramolecular dynamics using a one-dimensional flexible model suggests that the main tunneling phenomenon originates from equivalent positions of the hydroxyl group. A double-minimum potential function with a barrier of 1000 (100) cm-1 effectively describes this extensive amplitude motion. However, the three-fold fine structure, potentially linked to internal motions within the tert-butyl group, requires additional scrutiny for a comprehensive understanding.
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Affiliation(s)
- Wenqin Li
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias—I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain;
| | - Assimo Maris
- Department of Chemistry “G. Ciamician”, University of Bologna, Via F. Selmi 2, 40126 Bologna, Italy; (A.M.); (S.M.)
| | - Sonia Melandri
- Department of Chemistry “G. Ciamician”, University of Bologna, Via F. Selmi 2, 40126 Bologna, Italy; (A.M.); (S.M.)
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias—I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain;
| | - Luca Evangelisti
- Department of Chemistry “G. Ciamician”, University of Bologna, Via S. Alberto 163, 48123 Ravenna, Italy
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Lv D, Li W, Evangelisti L, Usabiaga I, Calabrese C, Maris A, Melandri S, Wang G, Zhou M. Rotational Spectroscopy Probes Lone Pair···π-Hole Interactions in Hexafluorobenzene-Tertiary Alkylamines Complexes. J Phys Chem Lett 2023:5335-5342. [PMID: 37272941 DOI: 10.1021/acs.jpclett.3c00882] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We employed microwave spectroscopy to investigate the 1:1 complexes of hexafluorobenzene with trimethylamine and quinuclidine, respectively. These complexes exhibit a C3v symmetry and are stabilized by nitrogen lone pair···π-hole interactions along the C3 axes. The N···π-center distances were determined to be 3.110(1) and 3.040(2) Å, respectively, which are shorter than that of hexafluorobenzene-ammonia at 3.2685(3) Å. Additionally, the strength of the intermolecular interaction increases with cluster size. While it was initially expected that the electron-donating effect of alkyl groups was responsible for changing the N···π interaction, the symmetry-adapted perturbation theory analysis revealed that, from hexafluorobenzene-ammonia to both hexafluorobenzene-alkylamines, electrostatic interaction actually decreases while dispersion interaction increases and becomes dominant. Interestingly, dispersion interaction decreases while electrostatic interaction increases from C6F6-N(CH3)3 to C6F6-NC7H13. The splitting pattern of the spectra indicates hexafluorobenzene rotates freely relative to its partners along the axis of the N···π-hole interactions.
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Affiliation(s)
- Dingding Lv
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Rd. 2005, 200438 Shanghai, China
| | - Weixing Li
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Rd. 2005, 200438 Shanghai, China
| | - Luca Evangelisti
- Dipartimento di Chimica "G. Ciamician" - Campus of Ravenna, Università di Bologna, Via Sant'Alberto, I-48123 Ravenna, Italy
| | - Imanol Usabiaga
- Dpto. Química Física, Universidad del País Vasco (UPV/EHU), Barrio Sarrena s/n, 48940 Leioa, Spain
| | - Camilla Calabrese
- Dpto. Química Física y Química Inorgánica, Facultad de Ciencias - I.U CINQUIMA, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
| | - Assimo Maris
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy
| | - Sonia Melandri
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy
| | - Guanjun Wang
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Rd. 2005, 200438 Shanghai, China
| | - Mingfei Zhou
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Rd. 2005, 200438 Shanghai, China
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Salvitti G, Baroncelli F, Nicotri C, Evangelisti L, Melandri S, Maris A. How Water Interacts with the NOH Group: The Rotational Spectrum of the 1:1 N,N-diethylhydroxylamine·Water Complex. Molecules 2022; 27:molecules27238190. [PMID: 36500289 PMCID: PMC9737918 DOI: 10.3390/molecules27238190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
The rotational spectrum of the 1:1 N,N-diethylhydroxylamine-water complex has been investigated using pulsed jet Fourier transform microwave spectroscopy in the 6.5-18.5 GHz frequency region. The most stable conformer has been detected as well as the 13C monosubstituted isotopologues in natural abundance and the 18O enriched water species, allowing to determine the nitrogen nuclear quadrupole coupling constants and the molecular structure in the vibrational ground state. The molecule has a Cs symmetry and the water lies in the bc symmetry plane forming two hydrogen bonds with the NOH frame with length: dHOH·NOH = 1.974 Å and dH2O·HON = 2.096 Å. From symmetry-adapted perturbation theory calculations coupled to atoms in molecule approach, the corresponding interaction energy values are estimated to be 24 and 13 kJ·mol-1, respectively. The great strength of the intermolecular interaction involving the nitrogen atom is in agreement with the high reactivity of hydroxylamine compounds at the nitrogen site.
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Affiliation(s)
- Giovanna Salvitti
- Department of Chemistry “G. Ciamician”, University of Bologna, 40126 Bologna, Italy
| | - Filippo Baroncelli
- Department of Chemistry “G. Ciamician”, University of Bologna, 40126 Bologna, Italy
| | - Chiara Nicotri
- Department of Chemistry “G. Ciamician”, University of Bologna, 40126 Bologna, Italy
| | - Luca Evangelisti
- Department of Chemistry “G. Ciamician”, Campus of Ravenna, University of Bologna, 48123 Ravenna, Italy
- Interdepartmental Centre for Industrial Aerospace Research (CIRI Aerospace), University of Bologna, 47121 Forlì, Italy
- Interdepartmental Centre for Industrial Agrifood Research (CIRI Agrifood), University of Bologna, 47521 Cesena, Italy
| | - Sonia Melandri
- Department of Chemistry “G. Ciamician”, University of Bologna, 40126 Bologna, Italy
- Interdepartmental Centre for Industrial Aerospace Research (CIRI Aerospace), University of Bologna, 47121 Forlì, Italy
- Interdepartmental Centre for Industrial Agrifood Research (CIRI Agrifood), University of Bologna, 47521 Cesena, Italy
| | - Assimo Maris
- Department of Chemistry “G. Ciamician”, University of Bologna, 40126 Bologna, Italy
- Interdepartmental Centre for Industrial Aerospace Research (CIRI Aerospace), University of Bologna, 47121 Forlì, Italy
- Correspondence: ; Tel.: +39-051-2099502
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Salvitti G, Pizzano E, Baroncelli F, Melandri S, Evangelisti L, Negri F, Coreno M, Prince KC, Ciavardini A, Sa'adeh H, Pori M, Mazzacurati M, Maris A. Spectroscopic and quantum mechanical study of a scavenger molecule: N,N-diethylhydroxylamine. Spectrochim Acta A Mol Biomol Spectrosc 2022; 281:121555. [PMID: 35926273 DOI: 10.1016/j.saa.2022.121555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
We report a combination of quantum mechanical calculations and a range of spectroscopic measurements in the gas phase of N,N-diethylhydroxylamine, an important scavenger compound. Three conformers were observed by pulsed jet Fourier transform microwave spectroscopy in the 6.5-18.5 GHz frequency range. They are characterized by the hydroxyl hydrogen atom being in trans orientation with respect to the bisector of the CNC angle while the side alkyl chains can be both trans (global minimum, Cs symmetry, A = 7608.1078(4), B = 2020.2988(2) and C = 1760.5423(2) MHz) or one trans and the other gauche (second energy minimum, A = 5302.896(1), B = 2395.9822(4) and C = 1804.8567(3) MHz) or gauche' (third energy minimum, A = 5960.8025(6), B = 2273.6627(4) and C = 1975.8074(4) MHz). For the global minimum, the 13Cα,13Cβ and 15N isotopologues were observed in natural abundance, allowing for an accurate partial structure determination. Moreover, several lines were detected by free jet absorption millimeter wave spectroscopy in the 59.6-74.4 GHz spectral range. The electron binding energies of the highest occupied molecular orbital and the next-to-highest occupied molecular orbital, determined by photoelectron spectroscopy, are 8.95 and 10.76 eV, respectively. Supporting calculations evidence that, (i) upon ionization of the HOMO, the molecular structure changes from an amine to an N-oxoammonium arrangement and (ii) the 0-0 of the HOMO-1 photoionization is 10.46 eV. The K-shell binding energies, determined by X-ray photoelectron spectroscopy, are 290.42 eV (Cβ), 291.45 eV (Cα), 405.98 eV (N) and 538.75 eV (O). The Fourier transform near infrared spectrum is reported and a tentative assignment is proposed. The equilibrium wavenumber (ω̃ = 3811 cm-1) and the anharmonicity constant (ω̃χ = -87.5 cm-1) of the hydroxyl stretching mode were estimated using a quadratic model.
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Affiliation(s)
- Giovanna Salvitti
- Department of Chemistry "G. Ciamician", University of Bologna, I-40126 Bologna, Italy
| | - Emanuele Pizzano
- Department of Chemistry "G. Ciamician", University of Bologna, I-40126 Bologna, Italy; BASF Italia S.p.A., Pontecchio Marconi, I-40037 Bologna, Italy
| | - Filippo Baroncelli
- Department of Chemistry "G. Ciamician", University of Bologna, I-40126 Bologna, Italy
| | - Sonia Melandri
- Department of Chemistry "G. Ciamician", University of Bologna, I-40126 Bologna, Italy; Interdepartmental Centre for Industrial Aerospace Research (CIRI Aerospace), University of Bologna, I-47121 Forlì, Italy; Interdepartmental Centre for Industrial Agrifood Research (CIRI Agrifood), University of Bologna, I-47521 Cesena, Italy
| | - Luca Evangelisti
- Interdepartmental Centre for Industrial Aerospace Research (CIRI Aerospace), University of Bologna, I-47121 Forlì, Italy; Interdepartmental Centre for Industrial Agrifood Research (CIRI Agrifood), University of Bologna, I-47521 Cesena, Italy; Department of Chemistry "G. Ciamician", University of Bologna I-48123 Ravenna, Italy
| | - Fabrizia Negri
- Department of Chemistry "G. Ciamician", University of Bologna, I-40126 Bologna, Italy; INSTM, UdR Bologna, I-40126 Bologna, Italy
| | - Marcello Coreno
- CNR-ISM, Trieste LD2 Unit, I-34149 Basovizza, Trieste, Italy
| | - Kevin C Prince
- Elettra-Sincrotrone Trieste, in Area Science Park, I-34149 Basovizza, Trieste, Italy; Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technology, Swinburne University of Technology, Hawthorn, Victoria, Australia
| | - Alessandra Ciavardini
- CNR-ISM, Trieste LD2 Unit, I-34149 Basovizza, Trieste, Italy; Elettra-Sincrotrone Trieste, in Area Science Park, I-34149 Basovizza, Trieste, Italy; Laboratory of Quantum Optics, University of Nova Gorica, Sl-5001 Nova Gorica, Slovenia
| | - Hanan Sa'adeh
- Elettra-Sincrotrone Trieste, in Area Science Park, I-34149 Basovizza, Trieste, Italy; Department of Physics, The University of Jordan, JO-11942 Amman, Jordan
| | - Matteo Pori
- BASF Italia S.p.A., Pontecchio Marconi, I-40037 Bologna, Italy
| | | | - Assimo Maris
- Department of Chemistry "G. Ciamician", University of Bologna, I-40126 Bologna, Italy; Interdepartmental Centre for Industrial Aerospace Research (CIRI Aerospace), University of Bologna, I-47121 Forlì, Italy.
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Baweja S, Panchagnula S, Sanz ME, Evangelisti L, Pérez C, West C, Pate BH. Competition between In-Plane vs Above-Plane Configurations of Water with Aromatic Molecules: Non-Covalent Interactions in 1,4-Naphthoquinone-(H 2O) 1-3 Complexes. J Phys Chem Lett 2022; 13:9510-9516. [PMID: 36200782 PMCID: PMC9575146 DOI: 10.1021/acs.jpclett.2c02618] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Non-covalent interactions between aromatic molecules and water are fundamental in many chemical and biological processes, and their accurate description is essential to understand molecular relative configurations. Here we present the rotational spectroscopy study of the water complexes of the polycyclic aromatic hydrocarbon 1,4-naphthoquinone (1,4-NQ). In 1,4-NQ-(H2O)1,2, water molecules bind through O-H···O and C-H···O hydrogen bonds and are located on the plane of 1,4-NQ. For 1,4-NQ-(H2O)3, in-plane and above-plane water configurations are observed exhibiting O-H···O, C-H···O, and lone pair···π-hole interactions. The observation of different water arrangements for 1,4-NQ-(H2O)3 allows benchmarking theoretical methods and shows that they have great difficulty in predicting energy orderings due to the strong competition of C-H···O binding with π and π-hole interactions. This study provides important insight into water interactions with aromatic systems and the challenges in their modeling.
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Affiliation(s)
- Shefali Baweja
- Department
of Chemistry, King’s College London, 7 Trinity Street, London SE1 1DB, United Kingdom
| | - Sanjana Panchagnula
- Department
of Chemistry, King’s College London, 7 Trinity Street, London SE1 1DB, United Kingdom
| | - M. Eugenia Sanz
- Department
of Chemistry, King’s College London, 7 Trinity Street, London SE1 1DB, United Kingdom
| | - Luca Evangelisti
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Cristóbal Pérez
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Channing West
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Brooks H. Pate
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
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Lv D, Evangelisti L, Maris A, Song W, Salvitti G, Melandri S. Characterizing the Interactions of Dimethyl Sulfoxide with Water: A Rotational Spectroscopy Study. J Phys Chem A 2022; 126:6882-6889. [PMID: 36149258 PMCID: PMC9549460 DOI: 10.1021/acs.jpca.2c04599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The interaction of
dimethyl sulfoxide with water has been investigated
by Fourier-transform microwave spectroscopy of the 1:1 complex and
its isotopologues, complemented with quantum chemical calculations.
The rotational spectra of 34S and 13C isotopologues
in natural abundance and the H218O and deuterated
water enriched isotopologues have been measured, allowing a partial
structure determination and establishing the position of water in
the complex. In the most stable conformation water was found to be
the donor of a primary OH···OS bond to the oxygen atom
of dimethyl sulfoxide and acceptor of two weak CH···OH
bonds with the methyl hydrogen atoms of dimethyl sulfoxide. From the
structural determination confirmed by quantum chemical calculations,
the water molecule lies in the symmetry plane of dimethyl sulfoxide,
and the complex has an overall Cs symmetry. The experimental findings are supported by atoms
in molecules and symmetry-adapted perturbation theories, which allowed
for determining the hydrogen bond and intermolecular interaction energies,
respectively.
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Affiliation(s)
- Dingding Lv
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126, Bologna, Italy
| | - Luca Evangelisti
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126, Bologna, Italy
| | - Assimo Maris
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126, Bologna, Italy
| | - Wentao Song
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126, Bologna, Italy
| | - Giovanna Salvitti
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126, Bologna, Italy
| | - Sonia Melandri
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126, Bologna, Italy
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Salvitti G, Blanco S, Lopez JC, Melandri S, Evangelisti L, Maris A. Probing intra- and inter-molecular interactions through rotational spectroscopy: the case of the odorant 2'- aminoacetophenone and its 1:1 water and neon complexes. J Chem Phys 2022; 157:144303. [DOI: 10.1063/5.0117516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The chirped pulse Fourier transform microwave spectrum of 2'-aminoacetophenone, an aromatic chemical species with odorant properties, has been recorded in the 2-8 GHz frequency range and analysed, obtaining precise information on the structure of the monomer and its neon and water complexes.The conformation of the monomer is determined by the formation of a resonance-assisted hydrogen bond (RAHB) between the carbonyl and amino groups, which leads to the formation of a bicyclic-like aromatic structure.Accordingly, the cycle formed by the non-covalent bond is preferred to the phenyl ring as the interaction site for neon.In the 1:1 complex, water lies in the molecular plane and forms a strong hydrogen bond with the carbonyl group coupled to an ancillary interaction with the methyl group, leaving the intramolecular RAHB unchanged.The experimental findings are supported by atom in molecules and symmetry-adapted perturbation theories which allowed for determining the hydrogen bond and intermolecular interaction energies, respectively.
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Affiliation(s)
| | | | | | - Sonia Melandri
- Dipartimento di Chimica, Università degli Studi di Bologna Dipartimento di Chimica Giacomo Ciamician, Italy
| | | | - Assimo Maris
- Department of Chemistry G. Ciamician, Alma Mater Studiorum University of Bologna, Italy
- Università degli Studi di Bologna Dipartimento di Chimica Giacomo Ciamician
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Juanes M, Saragi RT, Pérez C, Evangelisti L, Enríquez L, Jaraíz M, Lesarri A. Hydrogen Bonding in the Dimer and Monohydrate of 2-Adamantanol: A Test Case for Dispersion-Corrected Density Functional Methods. Molecules 2022; 27:molecules27082584. [PMID: 35458782 PMCID: PMC9030514 DOI: 10.3390/molecules27082584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/10/2022] [Accepted: 04/15/2022] [Indexed: 11/29/2022]
Abstract
Weakly-bound intermolecular clusters constitute reductionist physical models for non-covalent interactions. Here we report the observation of the monomer, the dimer and the monohydrate of 2-adamantanol, a secondary alcohol with a bulky ten-carbon aliphatic skeleton. The molecular species were generated in a supersonic jet expansion and characterized using broadband chirped-pulse microwave spectroscopy in the 2–8 GHz frequency region. Two different gauche-gauche O-H···O hydrogen-bonded isomers were observed for the dimer of 2-adamantanol, while a single isomer was observed for the monomer and the monohydrate. The experimental rotational parameters were compared with molecular orbital calculations using density functional theory (B3LYP-D3(BJ), B2PLYP-D3(BJ), CAM-B3LYP-D3(BJ), ωB97XD), additionally providing energetic and electron density characterization. The shallow potential energy surface makes the dimer an interesting case study to benchmark dispersion-corrected computational methods and conformational search procedures.
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Affiliation(s)
- Marcos Juanes
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias—I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain; (M.J.); (R.T.S.); (C.P.)
| | - Rizalina Tama Saragi
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias—I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain; (M.J.); (R.T.S.); (C.P.)
| | - Cristóbal Pérez
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias—I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain; (M.J.); (R.T.S.); (C.P.)
| | - Luca Evangelisti
- Dipartimento di Chimica ‘‘Giacomo Ciamician’’, Università di Bologna, Via Selmi, 2, 40126 Bologna, Italy;
| | - Lourdes Enríquez
- Departamento de Electrónica, Escuela Técnica Superior de Ingenieros de Telecomunicación, Universidad de Valladolid, Paseo de Belén, 15, 47011 Valladolid, Spain; (L.E.); (M.J.)
| | - Martín Jaraíz
- Departamento de Electrónica, Escuela Técnica Superior de Ingenieros de Telecomunicación, Universidad de Valladolid, Paseo de Belén, 15, 47011 Valladolid, Spain; (L.E.); (M.J.)
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias—I.U. CINQUIMA, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain; (M.J.); (R.T.S.); (C.P.)
- Correspondence: ; Tel.: +34-983-185895
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Calabretta MM, Lopreside A, Montali L, Zangheri M, Evangelisti L, D'Elia M, Michelini E. Portable light detectors for bioluminescence biosensing applications: A comprehensive review from the analytical chemist's perspective. Anal Chim Acta 2022; 1200:339583. [DOI: 10.1016/j.aca.2022.339583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 02/02/2022] [Accepted: 02/04/2022] [Indexed: 12/11/2022]
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11
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Mayer K, West C, Marshall F, Sedo G, Grubbs II S, Evangelisti L, Pate B. Accuracy of Quantum Chemistry Structures of Chiral Tag Complexes and the Assignment of Absolute Configuration. Phys Chem Chem Phys 2022; 24:27705-27721. [DOI: 10.1039/d2cp04060c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The absolute configuration of a molecule can be established by analysis of molecular rotational spectra of the analyte complexed with a small chiral molecule of known configuration. This approach of...
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12
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Maris A, Melandri S, Evangelisti L, Vigorito A, Sigismondi S, Calabrese C, Usabiaga I. Structure and dynamics of methacrylamide, a computational and free-jet rotational spectroscopic study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131391] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Evangelisti L, Feng G, Caminati W. A rotational study of the 1:1 adduct of ethanol and 1,4-dioxane. Spectrochim Acta A Mol Biomol Spectrosc 2021; 261:120086. [PMID: 34161849 DOI: 10.1016/j.saa.2021.120086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/31/2021] [Accepted: 06/12/2021] [Indexed: 06/13/2023]
Abstract
The pure rotational spectra of the 1:1 ethanol - 1,4-dioxane complex and its OD mono-deuterated species have been measured using pulsed-jet Fourier transform microwave spectroscopy. Conformational predictions for the plausible isomers of ethanol - 1,4-dioxane have been carried out considering the spatial orientation of gauche/trans ethanol with respect to the chair/boat and twisted conformations of 1,4-dioxane. Using Helium for the supersonic expansion, the microwave spectrum has been observed for the most stable structure. In the observed isomer, the two subunits are linked together by an OH⋯O hydrogen bond with gauche ethanol acting as proton donor to dioxane in the chair conformation. The non-covalent interactions have been characterized using different computational approaches. A small inverse Ubbelohde effect was observed after H → D isotopic substitution in the OH⋯O hydrogen bond.
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Affiliation(s)
- Luca Evangelisti
- Dipartimento di Chimica "Giacomo Ciamician" dell'Università, Via S. Alberto 163, I-48123 Ravenna, Italy.
| | - Gang Feng
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
| | - Walther Caminati
- Dipartimento di Chimica "Giacomo Ciamician" dell'Università, Via Selmi 2, I-40126 Bologna, Italy
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14
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Lv D, Maris A, Evangelisti L, Maggio A, Song W, Elliott AA, Peebles SA, Neill JL, Muckle MT, Pate BH, Peebles RA, Melandri S. σ-Hole activation and structural changes upon perfluorination of aryl halides: direct evidence from gas phase rotational spectroscopy. Phys Chem Chem Phys 2021; 23:18093-18101. [PMID: 34397049 DOI: 10.1039/d1cp03023j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhancement of the σ-hole on the halogen atom of aryl halides due to perfluorination of the ring is demonstrated by use of the Extended Townes-Dailey (ETD) model coupled to a Natural Atomic Orbital Bond analysis on two perfluorinated aryl halides (C6F5Cl and C6F5Br) and their hydrogenated counterparts. The ETD analysis, which quantifies the halogen p-orbitals populations, relies on the nuclear quadrupole coupling constants which in this work are accurately determined experimentally from the rotational spectra. The rotational spectra investigated by Fourier-transform microwave spectroscopy performed in supersonic expansion are reported for the parent species of C6F5Cl and C6F5Br and their 13C, 37Cl or 81Br substituted isotopologues observed in natural abundance. The experimentally determined rotational constants combined with theoretical data at the MP2/aug-cc-pVTZ level provide precise structural information from which an elongation of the ring along its symmetry axis due to perfluorination is proved.
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Affiliation(s)
- Dingding Lv
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126, Bologna, Italy.
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15
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Li W, Melandri S, Evangelisti L, Calabrese C, Vigorito A, Maris A. Characterizing hydrogen and tetrel bonds in clusters of CO 2 with carboxylic acids. Phys Chem Chem Phys 2021; 23:16915-16922. [PMID: 34337625 DOI: 10.1039/d1cp02568f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The interaction between carbon dioxide and planar carboxylic acids has been investigated through the analysis of the microwave spectrum of the acrylic acid·CO2 complex and quantum chemical modeling of the R-COOH·(CO2)1,16 clusters, where R = H, CH2CH. As regards the 1 : 1 compounds, two species, involving the s-cis and s-trans conformers of acrylic acid were observed. For both of them, a similar bidentate interaction arises between the carbonyl group of CO2 and the carboxylic group of the organic acid, leading to the formation of a planar six-membered ring. The binding energy is estimated to be De ≃ 21 kJ mol-1, 1/3 being the energy contributions of the tetrel to hydrogen bonds, respectively. In the 1 : 16 clusters, the ring arrangement is broken, allowing for the interaction of the acid with several CO2 molecules. The CO2 molecules completely surround formic acid, whereas, in the case of acrylic acid, they tend to avoid the allyl chain.
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Affiliation(s)
- Weixing Li
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, I-40126 Bologna, Italy.
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16
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Calabrese C, Temelso B, Usabiaga I, Seifert NA, Basterretxea FJ, Prampolini G, Shields GC, Pate BH, Evangelisti L, Cocinero EJ. The Role of Non-Covalent Interactions on Cluster Formation: Pentamer, Hexamers and Heptamer of Difluoromethane. Angew Chem Int Ed Engl 2021; 60:16894-16899. [PMID: 34028158 PMCID: PMC8362204 DOI: 10.1002/anie.202103900] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/27/2021] [Indexed: 01/30/2023]
Abstract
The role of non-covalent interactions (NCIs) has broadened with the inclusion of new types of interactions and a plethora of weak donor/acceptor partners. This work illustrates the potential of chirped-pulse Fourier transform microwave technique, which has revolutionized the field of rotational spectroscopy. In particular, it has been exploited to reveal the role of NCIs' in the molecular self-aggregation of difluoromethane where a pentamer, two hexamers and a heptamer were detected. The development of a new automated assignment program and a sophisticated computational screening protocol was essential for identifying the homoclusters in conditions of spectral congestion. The major role of dispersion forces leads to less directional interactions and more distorted structures than those found in polar clusters, although a detailed analysis demonstrates that the dominant interaction energy is the pairwise interaction. The tetramer cluster is identified as a structural unit in larger clusters, representing the maximum expression of bond between dimers.
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Affiliation(s)
- Camilla Calabrese
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU)Barrio Sarriena, S/N48940LeioaSpain
- Instituto Biofisika (UPV/EHU, CSIC)48940LeioaSpain
- Fundación Biofísica Bizkaia/Biofisika Bizkaia Fundazioa (FBB)48940LeioaSpain
| | - Berhane Temelso
- George Mason UniversityInformation Technology ServicesFairfaxVA22030USA
| | - Imanol Usabiaga
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU)Barrio Sarriena, S/N48940LeioaSpain
- Instituto Biofisika (UPV/EHU, CSIC)48940LeioaSpain
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bolognavia S. Alberto 16348100RavennaItaly
| | - Nathan A. Seifert
- Department of ChemistryUniversity of VirginiaMcCormick RoadCharlottesvilleVA22903USA
| | - Francisco J. Basterretxea
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU)Barrio Sarriena, S/N48940LeioaSpain
| | - Giacomo Prampolini
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricercavia G. Moruzzi 156124PisaItaly
| | | | - Brooks H. Pate
- Department of ChemistryUniversity of VirginiaMcCormick RoadCharlottesvilleVA22903USA
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bolognavia S. Alberto 16348100RavennaItaly
| | - Emilio J. Cocinero
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU)Barrio Sarriena, S/N48940LeioaSpain
- Instituto Biofisika (UPV/EHU, CSIC)48940LeioaSpain
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17
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Calabrese C, Temelso B, Usabiaga I, Seifert NA, Basterretxea FJ, Prampolini G, Shields GC, Pate BH, Evangelisti L, Cocinero EJ. The Role of Non‐Covalent Interactions on Cluster Formation: Pentamer, Hexamers and Heptamer of Difluoromethane. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Camilla Calabrese
- Departament of Physical Chemistry University of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Instituto Biofisika (UPV/EHU, CSIC) 48940 Leioa Spain
- Fundación Biofísica Bizkaia/Biofisika Bizkaia Fundazioa (FBB) 48940 Leioa Spain
| | - Berhane Temelso
- George Mason University Information Technology Services Fairfax VA 22030 USA
| | - Imanol Usabiaga
- Departament of Physical Chemistry University of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Instituto Biofisika (UPV/EHU, CSIC) 48940 Leioa Spain
- Dipartimento di Chimica “Giacomo Ciamician” Università degli Studi di Bologna via S. Alberto 163 48100 Ravenna Italy
| | - Nathan A. Seifert
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22903 USA
| | - Francisco J. Basterretxea
- Departament of Physical Chemistry University of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
| | - Giacomo Prampolini
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR) Area della Ricerca via G. Moruzzi 1 56124 Pisa Italy
| | | | - Brooks H. Pate
- Department of Chemistry University of Virginia McCormick Road Charlottesville VA 22903 USA
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician” Università degli Studi di Bologna via S. Alberto 163 48100 Ravenna Italy
| | - Emilio J. Cocinero
- Departament of Physical Chemistry University of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Instituto Biofisika (UPV/EHU, CSIC) 48940 Leioa Spain
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18
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Li W, Spada L, Evangelisti L, Caminati W. Rotational studies of adducts between carboxylic acids and tertiary alcohols: Formic acid - tert-butyl alcohol. Spectrochim Acta A Mol Biomol Spectrosc 2021; 254:119621. [PMID: 33743306 DOI: 10.1016/j.saa.2021.119621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/02/2021] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
The rotational spectra of the parent and eight isotopologues of the 1:1 complex formic acid - tert-butyl alcohol (FA-TBA) have been measured by pulsed jet Fourier transform microwave spectroscopy. The spectra have been observed in the supersonic expansion of a mixture of FA and TBA in Helium, differently with respect to the mixtures of FA with primary and secondary alcohols, which undergo the esterification reaction upon supersonic expansion. In the complex, the two subunits are linked to each other by two different O-H···O hydrogen bonds (HB) in which FA and TBA are alternate their roles of bond acceptor and donor. Upon H → D substitution of the corresponding O-H···O HB, a small Ubbelohde effect is observed.
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Affiliation(s)
- Weixing Li
- Dipartimento di Chimica "Giacomo Ciamician" dell'Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Lorenzo Spada
- Dipartimento di Chimica "Giacomo Ciamician" dell'Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Luca Evangelisti
- Dipartimento di Chimica "Giacomo Ciamician" dell'Università, Via Selmi 2, I-40126 Bologna, Italy.
| | - Walther Caminati
- Dipartimento di Chimica "Giacomo Ciamician" dell'Università, Via Selmi 2, I-40126 Bologna, Italy.
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19
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Li W, Usabiaga I, Calabrese C, Evangelisti L, Maris A, Favero LB, Melandri S. Characterizing the lone pair⋯π–hole interaction in complexes of ammonia with perfluorinated arenes. Phys Chem Chem Phys 2021; 23:9121-9129. [DOI: 10.1039/d1cp00451d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stronger and more flexible lone pair⋯π–hole interaction of ammonia with respect to water in complexes with perfluorinated arenes.
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Affiliation(s)
- Weixing Li
- Department of Chemistry “Giacomo Ciamician”
- University of Bologna
- Bologna
- Italy
| | - Imanol Usabiaga
- Department of Chemistry “Giacomo Ciamician”
- University of Bologna
- Bologna
- Italy
| | - Camilla Calabrese
- Department of Physical Chemistry, University of the Basque Country (UPV/EHU), Barrio Sarriena, S/N
- Leioa
- Spain
- Biofisika Institute, (CSIC, UPV/EHU)
- Barrio Sarriena, S/N
| | - Luca Evangelisti
- Department of Chemistry “Giacomo Ciamician”
- University of Bologna
- Bologna
- Italy
| | - Assimo Maris
- Department of Chemistry “Giacomo Ciamician”
- University of Bologna
- Bologna
- Italy
| | - Laura B. Favero
- Istituto per lo studio dei materiali nanostrutturati CNR – ISMN
- Bologna
- Italy
| | - Sonia Melandri
- Department of Chemistry “Giacomo Ciamician”
- University of Bologna
- Bologna
- Italy
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20
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Saxena S, Panchagnula S, Sanz ME, Pérez C, Evangelisti L, Pate BH. Structural Changes Induced by Quinones: High-Resolution Microwave Study of 1,4-Naphthoquinone. Chemphyschem 2020; 21:2579-2584. [PMID: 32954594 PMCID: PMC7756206 DOI: 10.1002/cphc.202000665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/26/2020] [Indexed: 12/20/2022]
Abstract
1,4-Naphthoquinone (1,4-NQ) is an important product of naphthalene oxidation, and it appears as a motif in many biologically active compounds. We have investigated the structure of 1,4-NQ using chirped-pulse Fourier transform microwave spectroscopy and quantum chemistry calculations. The rotational spectra of the parent species, and its 13 C and 18 O isotopologues were observed in natural abundance, and their spectroscopic parameters were obtained. This allowed the determination of the substitution rs , mass-weighted rm and semi-experimental reSE structures of 1,4-NQ. The obtained structural parameters show that the quinone moiety mainly changes the structure of the benzene ring where it is inserted, modifying the C-C bonds to having predominantly single or double bond character. Furthermore, the molecular electrostatic surface potential reveals that the quinone ring becomes electron deficient while the benzene ring remains a nucleophile. The most electrophilic areas are the hydrogens attached to the double bond in the quinone ring. Knowledge of the nucleophilic and electrophilic areas in 1,4-NQ will help understanding its behaviour interacting with other molecules and guide modifications to tune its properties.
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Affiliation(s)
- Shefali Saxena
- Department of ChemistryKing's College LondonLondonUnited Kingdom
| | | | - M. Eugenia Sanz
- Department of ChemistryKing's College LondonLondonUnited Kingdom
| | - Cristóbal Pérez
- Department of ChemistryUniversity of VirginiaCharlottesvilleVAUSA
| | - Luca Evangelisti
- Department of ChemistryUniversity of VirginiaCharlottesvilleVAUSA
- Department of Chemistry “G. Ciamician”University of BolognaVia Selmi 2Bologna40126Italy
| | - Brooks H. Pate
- Department of ChemistryUniversity of VirginiaCharlottesvilleVAUSA
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21
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Juanes M, Usabiaga I, León I, Evangelisti L, Fernández JA, Lesarri A. The Six Isomers of the Cyclohexanol Dimer: A Delicate Test for Dispersion Models. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marcos Juanes
- Departamento de Química Física y Química Inorgánica—I.U. CINQUIMA Universidad de Valladolid Paseo de Belén, 7 47011 Valladolid Spain
| | - Imanol Usabiaga
- Departamento de Química Física Universidad del País Vasco Ap. 644 48080 Bilbao Spain
- Instituto Biofisika (CSIC, UPV/EHU) 48940 Leioa Spain
| | - Iker León
- Departamento de Química Física y Química Inorgánica—I.U. CINQUIMA Universidad de Valladolid Paseo de Belén, 7 47011 Valladolid Spain
- Departamento de Química Física Universidad del País Vasco Ap. 644 48080 Bilbao Spain
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” Università di Bologna Via Selmi, 2 40126 Bologna Italy
| | - José A. Fernández
- Departamento de Química Física Universidad del País Vasco Ap. 644 48080 Bilbao Spain
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica—I.U. CINQUIMA Universidad de Valladolid Paseo de Belén, 7 47011 Valladolid Spain
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22
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Melandri S, Evangelisti L, Canola S, Sa'adeh H, Calabrese C, Coreno M, Grazioli C, Prince KC, Negri F, Maris A. Chlorination and tautomerism: a computational and UPS/XPS study of 2-hydroxypyridine ⇌ 2-pyridone equilibrium. Phys Chem Chem Phys 2020; 22:13440-13455. [PMID: 32519689 DOI: 10.1039/d0cp02304c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The prototropic tautomeric equilibrium in 2-hydroxypyridine serves as a prototype model for the study of nucleobases' behaviour. The position of such an equilibrium in parent and chlorine monosubstituted 2-hydroxypyridine compounds in the gas phase was determined using synchrotron based techniques. The lactim tautomer is dominant for the 5- and 6-substituted compounds, whereas the parent, 3- and 4-substituted isomers have comparable populations for both tautomers. Information was obtained by measuring valence band and core level photoemission spectra at the chlorine L-edge and carbon, nitrogen, and oxygen K-edges. The effect of chlorine on the core ionization potentials of the atoms in the heterocycle was evaluated and reasonable agreement with a simple model was obtained. Basic considerations of resonance structures correctly predicts the tautomeric equilibrium for the 5- and 6-substituted compounds. The vibrationally resolved structure of the low energy portion of the valence band photoionization spectra is assigned based on quantum-chemical calculations of the neutral and charged species followed by simulation of the vibronic structure. It is shown that the first ionization occurs from a π orbital of similar shape for both tautomers. In addition, the highly distinctive vibronic structure observed just above the first ionization of the lactim, for three of the five species investigated, is assigned to the second ionization of the lactam.
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Affiliation(s)
- Sonia Melandri
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, I-40126 Bologna, Italy.
| | - Luca Evangelisti
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, I-40126 Bologna, Italy.
| | - Sofia Canola
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, I-40126 Bologna, Italy.
| | - Hanan Sa'adeh
- Department of Physics, The University of Jordan, Amman, JO-11942, Jordan
| | - Camilla Calabrese
- Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU), Apartado 644, E-48080 Bilbao, Spain and Basque Centre for Biophysics (CSIC, UPV/EHU), Barrio Sarriena, E-48940 Leioa, Spain
| | - Marcello Coreno
- CNR-ISM, Trieste LD2 Unit, Elettra-Sincrotrone Trieste, I-34149 Basovizza, Trieste, Italy
| | - Cesare Grazioli
- CNR-ISM, Trieste LD2 Unit, Elettra-Sincrotrone Trieste, I-34149 Basovizza, Trieste, Italy
| | - Kevin C Prince
- Elettra Sincrotrone Trieste, Area Science Park, I-34149 Basovizza, Trieste, Italy. and Centre for Translational Atomaterials, Swinburne University of Technology, Melbourne, Australia
| | - Fabrizia Negri
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, I-40126 Bologna, Italy.
| | - Assimo Maris
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, I-40126 Bologna, Italy.
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23
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Juanes M, Usabiaga I, León I, Evangelisti L, Fernández JA, Lesarri A. The Six Isomers of the Cyclohexanol Dimer: A Delicate Test for Dispersion Models. Angew Chem Int Ed Engl 2020; 59:14081-14085. [DOI: 10.1002/anie.202005063] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/11/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Marcos Juanes
- Departamento de Química Física y Química Inorgánica—I.U. CINQUIMA Universidad de Valladolid Paseo de Belén, 7 47011 Valladolid Spain
| | - Imanol Usabiaga
- Departamento de Química Física Universidad del País Vasco Ap. 644 48080 Bilbao Spain
- Instituto Biofisika (CSIC, UPV/EHU) 48940 Leioa Spain
| | - Iker León
- Departamento de Química Física y Química Inorgánica—I.U. CINQUIMA Universidad de Valladolid Paseo de Belén, 7 47011 Valladolid Spain
- Departamento de Química Física Universidad del País Vasco Ap. 644 48080 Bilbao Spain
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” Università di Bologna Via Selmi, 2 40126 Bologna Italy
| | - José A. Fernández
- Departamento de Química Física Universidad del País Vasco Ap. 644 48080 Bilbao Spain
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica—I.U. CINQUIMA Universidad de Valladolid Paseo de Belén, 7 47011 Valladolid Spain
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Abstract
The effect of sulfur hydrogen bonding on the conformational equilibrium of methyl 3-mercaptopropionate was investigated using microwave spectroscopy in a supersonic jet expansion. The two most stable conformers (I and II) were assigned in the rotational spectra, and complex splitting patterns owing to the methyl internal rotation and SH tunneling motion were resolved and analyzed in detail. For both conformers, the experimental torsional barriers for the methyl top are similar and about 5.1 kJ mol-1, revealing that their geometrical differences do not affect the methyl internal rotation. The experimentally derived rotational and centrifugal distortion constants, along with the methyl internal rotation barriers, are discussed and compared with results from density functional theory and ab initio calculations. Quantum theory of atoms in molecules, noncovalent interactions, and natural bond orbital analyses show that the global minimum geometry (I), which has the thiol hydrogen oriented toward the carbonyl of the ester, is stabilized by an SH···O=C hydrogen bond. The presence of a hydrogen bond is confirmed by the derivation of an accurate experimental geometry that reveals a hydrogen bond distance and S-H-O angle of 2.515(4) Å and 117.4(1)°, respectively. These results are key benchmarks to expand the current knowledge of sulfur hydrogen bonds and the relationship between internal motions and conformational preferences in esters.
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Affiliation(s)
- Weslley G D P Silva
- Department of Chemistry , University of Manitoba , Winnipeg , Manitoba R3T 2N2 , Canada
| | - Luca Evangelisti
- Department of Chemistry "G. Ciamician" , University of Bologna , Via Selmi 2 , I-40126 Bologna , Italy
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25
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Calabrese C, Li W, Prampolini G, Evangelisti L, Uriarte I, Cacelli I, Melandri S, Cocinero EJ. A General Treatment to Study Molecular Complexes Stabilized by Hydrogen‐, Halogen‐, and Carbon‐Bond Networks: Experiment and Theory of (CH
2
F
2
)
n
⋅⋅⋅(H
2
O)
m. Angew Chem Int Ed Engl 2019; 58:8437-8442. [DOI: 10.1002/anie.201902753] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/05/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Camilla Calabrese
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
| | - Weixing Li
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
| | - Giacomo Prampolini
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricerca via G. Moruzzi 1 I-56124 Pisa Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
- Department of ChemistryUniversity of Virginia McCormick Road VA 22903 Charlottesville USA
| | - Iciar Uriarte
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
| | - Ivo Cacelli
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricerca via G. Moruzzi 1 I-56124 Pisa Italy
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa via Risorgimento 35 I-56126 Pisa Italy
| | - Sonia Melandri
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
| | - Emilio J. Cocinero
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
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26
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Calabrese C, Li W, Prampolini G, Evangelisti L, Uriarte I, Cacelli I, Melandri S, Cocinero EJ. A General Treatment to Study Molecular Complexes Stabilized by Hydrogen‐, Halogen‐, and Carbon‐Bond Networks: Experiment and Theory of (CH
2
F
2
)
n
⋅⋅⋅(H
2
O)
m
. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Camilla Calabrese
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
| | - Weixing Li
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
| | - Giacomo Prampolini
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricerca via G. Moruzzi 1 I-56124 Pisa Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
- Department of ChemistryUniversity of Virginia McCormick Road VA 22903 Charlottesville USA
| | - Iciar Uriarte
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
| | - Ivo Cacelli
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricerca via G. Moruzzi 1 I-56124 Pisa Italy
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa via Risorgimento 35 I-56126 Pisa Italy
| | - Sonia Melandri
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
| | - Emilio J. Cocinero
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
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27
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Neill JL, Yang Y, Muckle MT, Reynolds RL, Evangelisti L, Sonstrom RE, Pate BH, Gupton BF. Online Stereochemical Process Monitoring by Molecular Rotational Resonance Spectroscopy. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00089] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Justin L. Neill
- BrightSpec, Inc., 770 Harris Street Suite 104b, Charlottesville, Virginia 22903, United States
| | - Yuan Yang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Matt T. Muckle
- BrightSpec, Inc., 770 Harris Street Suite 104b, Charlottesville, Virginia 22903, United States
| | - Roger L. Reynolds
- BrightSpec, Inc., 770 Harris Street Suite 104b, Charlottesville, Virginia 22903, United States
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” dell’Universita, via Selmi 2, I-40126, Bologna, Italy
| | - Reilly E. Sonstrom
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, Virginia 22904, United States
| | - Brooks H. Pate
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, Virginia 22904, United States
| | - B. Frank Gupton
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
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28
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Spada L, Evangelisti L, Li W, Orlacchio R, Caminati W. Carboxylic Acids, Reactivity with Alcohols and Clustering with Esters: A Rotational Study of Formic Acid-Isopropylformate. J Phys Chem A 2019; 123:1785-1789. [PMID: 30730139 DOI: 10.1021/acs.jpca.8b11294] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The rotational spectrum of the 1:1 complex formic acid-isopropylformate (FA-IPF) has been first observed when trying to assign the pulsed jet Fourier transform microwave (FTMW) spectrum of the adduct formic acid-2-propanol, by expanding a binary mixture of HCOOH and 2-propanol in He. The strong FTMW spectrum of isopropylformate, formed by the esterification reaction, was observed instead. However, when HCOOH was in excess in the binary mixture, it was possible to observe and assign the rotational spectrum of FA-IPF. Later on a much intense spectrum of FA-IPF was obtained, when combining FA with IPF. Finally, the spectra of five isotopologues of the most stable isomer of formic acid-isopropylformate have been observed by means of rotational spectroscopy in supersonic expansion. Some of them, HCOOH-(CH3)2CHOOCD and HCOOH-(CH3)2CDOOCH have been synthesized in the MW cavity by using DCOOH or (CH3)2CDOH as precursors in the esterification process. In the observed isomer of the complex, the two subunits are linked to each other by a standard O-H···O and a weak C-H···O hydrogen bond. The dissociation energy has been estimated to be 34.1 kJ·mol-1.
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Affiliation(s)
- Lorenzo Spada
- Dipartimento di Chimica , "G. Ciamician" dell'Università , Via Selmi 2 , I-40126 Bologna , Italy
| | - Luca Evangelisti
- Dipartimento di Chimica , "G. Ciamician" dell'Università , Via Selmi 2 , I-40126 Bologna , Italy
| | - Weixing Li
- Dipartimento di Chimica , "G. Ciamician" dell'Università , Via Selmi 2 , I-40126 Bologna , Italy
| | - Ramona Orlacchio
- Dipartimento di Chimica , "G. Ciamician" dell'Università , Via Selmi 2 , I-40126 Bologna , Italy
| | - Walther Caminati
- Dipartimento di Chimica , "G. Ciamician" dell'Università , Via Selmi 2 , I-40126 Bologna , Italy
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29
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Li W, Evangelisti L, Gou Q, Caminati W, Meyer R. The Barrier to Proton Transfer in the Dimer of Formic Acid: A Pure Rotational Study. Angew Chem Int Ed Engl 2019; 58:859-865. [DOI: 10.1002/anie.201812754] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Weixing Li
- Dipartimento di Chimica “G. Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Qian Gou
- School of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Rolf Meyer
- Sonnenbergstrasse 18 5621 Zufikon Switzerland
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30
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Juanes M, Li W, Spada L, Evangelisti L, Lesarri A, Caminati W. Internal dynamics of cyclohexanol and the cyclohexanol–water adduct. Phys Chem Chem Phys 2019; 21:3676-3682. [DOI: 10.1039/c8cp04455d] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two for a tango: the rotational spectrum of a cyclohexanol–water dimer evidences a concerted motion of the water molecule and the hydroxyl group of the ring.
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Affiliation(s)
- Marcos Juanes
- Departamento de Química Física y Química Inorgánica – IU CINQUIMA
- Facultad de Ciencias
- Universidad de Valladolid
- E-47011 Valladolid
- Spain
| | - Weixing Li
- Dipartimento di Chimica “Giacomo Ciamician” dell’Università
- I-40126 Bologna
- Italy
| | - Lorenzo Spada
- Dipartimento di Chimica “Giacomo Ciamician” dell’Università
- I-40126 Bologna
- Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician” dell’Università
- I-40126 Bologna
- Italy
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica – IU CINQUIMA
- Facultad de Ciencias
- Universidad de Valladolid
- E-47011 Valladolid
- Spain
| | - Walther Caminati
- Dipartimento di Chimica “Giacomo Ciamician” dell’Università
- I-40126 Bologna
- Italy
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31
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Li W, Maris A, Calabrese C, Usabiaga I, Geppert WD, Evangelisti L, Melandri S. Atmospherically relevant acrolein–water complexes: spectroscopic evidence of aldehyde hydration and oxygen atom exchange. Phys Chem Chem Phys 2019; 21:23559-23566. [DOI: 10.1039/c9cp04910j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rotational spectroscopy and isotopic studies evidence oxygen exchange in water complexes of atmospherically important acrolein.
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Affiliation(s)
- Weixing Li
- Dipartimento di Chimica “G. Ciamician” Università di Bologna
- I-40126 Bologna
- Italy
| | - Assimo Maris
- Dipartimento di Chimica “G. Ciamician” Università di Bologna
- I-40126 Bologna
- Italy
| | - Camilla Calabrese
- Dpto. Química Física
- Facultad de Ciencia y Tecnología Universidad del País Vasco (UPV/EHU)
- E-48080 Bilbao
- Spain
- Instituto Biofisika (UPV/EHU, CSIC)
| | - Imanol Usabiaga
- Dipartimento di Chimica “G. Ciamician” Università di Bologna
- I-40126 Bologna
- Italy
| | - Wolf D. Geppert
- Department of Physics
- Stockholm University
- Albanova University Center
- SE-106 91 Stockholm
- Sweden
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” Università di Bologna
- I-40126 Bologna
- Italy
| | - Sonia Melandri
- Dipartimento di Chimica “G. Ciamician” Università di Bologna
- I-40126 Bologna
- Italy
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32
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Evangelisti L, Caminati W. Modeling the internal rotation tunnelling in benzyl alcohol by ring fluorination: The rotational spectrum of 3,5-difluorobenzyl alcohol. Chem Phys Lett 2019. [DOI: 10.1016/j.cpletx.2018.100004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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33
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Spada L, Uriarte I, Li W, Evangelisti L, Cocinero EJ, Caminati W. Interactions between azines and alcohols: a rotational study of pyridine–tert-butyl alcohol. Phys Chem Chem Phys 2019; 21:3545-3549. [PMID: 30168540 DOI: 10.1039/c8cp04462g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The observed spectrum identifies aCssymmetry σ-type complex, with the two subunits held together by coplanar “classical” O–H⋯N and weak C–H⋯π intermolecular hydrogen bonds. The O⋯N distance decreases by 4 mÅ upon deuteration of the hydroxyl group (reverse Ubbelohde effect).
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Affiliation(s)
- Lorenzo Spada
- Dipartimento di Chimica “G. Ciamician” dell’Università
- I-40126 Bologna
- Italy
- Scuola Normale Superiore, Piazza dei Cavalieri 7
- 56126 Pisa
| | - Iciar Uriarte
- Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco, (UPV-EHU) and Biofisika Institute (CSIC, UPV-EHU), Apartado 644
- E-48940 Bilbao
- Spain
| | - Weixing Li
- Dipartimento di Chimica “G. Ciamician” dell’Università
- I-40126 Bologna
- Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” dell’Università
- I-40126 Bologna
- Italy
| | - Emilio J. Cocinero
- Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco, (UPV-EHU) and Biofisika Institute (CSIC, UPV-EHU), Apartado 644
- E-48940 Bilbao
- Spain
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician” dell’Università
- I-40126 Bologna
- Italy
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34
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Li W, Evangelisti L, Gou Q, Caminati W, Meyer R. Barrier to Proton Transfer in the Dimer of Formic Acid: A Pure Rotational Study. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Weixing Li
- Dipartimento di Chimica “G. Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Qian Gou
- School of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Rolf Meyer
- Sonnenbergstrasse 18 5621 Zufikon Switzerland
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35
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Camici M, Evangelisti L, Balestri P, Cioni L, Fundi P, Sagripanti A, Meriggioli M, Giordani R. Coagulation Activation in Extracorporeal Hemodialysis. Int J Artif Organs 2018. [DOI: 10.1177/039139889702000307] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Authors evaluated the behavior of protein C activity, factor X and factor VII coagulant activity and serum lipoprotein(a) before and after dialytic treatment in patients on maintenance hemodialysis. They observed depressed protein C activity that significantly (p<0.005) increased and became normal immediately after hemodialysis while factor X and factor VII increased (p<0.01; p<0.05) despite heparinization together with amount of serum lipoprotein(a). In vitro incubation (30 'at 37°C) of uremic and healthy blood showed a decrease in serum lipoprotein(a) concentration. After heparin addition (final concentration 0.5 U/ml) lipoprotein(a) increased in the uremic blood only. The clinical and physiopathological implications of these results are discussed.
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Affiliation(s)
- M. Camici
- Clinical Medicines Institute I and II, Pisa University, Pisa
| | - L. Evangelisti
- Clinical Medicines Institute I and II, Pisa University, Pisa
| | - P. Balestri
- Clinical Medicines Institute I and II, Pisa University, Pisa
| | - L. Cioni
- Nephrological Division, S. Chiara Hospital, Pisa - Italy
| | - P. Fundi
- Nephrological Division, S. Chiara Hospital, Pisa - Italy
| | - A. Sagripanti
- Clinical Medicines Institute I and II, Pisa University, Pisa
| | - M. Meriggioli
- Clinical Medicines Institute I and II, Pisa University, Pisa
| | - R. Giordani
- Clinical Medicines Institute I and II, Pisa University, Pisa
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36
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Li W, Spada L, Tasinato N, Rampino S, Evangelisti L, Gualandi A, Cozzi PG, Melandri S, Barone V, Puzzarini C. Theory Meets Experiment for Noncovalent Complexes: The Puzzling Case of Pnicogen Interactions. Angew Chem Int Ed Engl 2018; 57:13853-13857. [DOI: 10.1002/anie.201807751] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/20/2018] [Indexed: 01/29/2023]
Affiliation(s)
- Weixing Li
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Lorenzo Spada
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Nicola Tasinato
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Sergio Rampino
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Andrea Gualandi
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Sonia Melandri
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Vincenzo Barone
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Cristina Puzzarini
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
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37
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Li W, Spada L, Tasinato N, Rampino S, Evangelisti L, Gualandi A, Cozzi PG, Melandri S, Barone V, Puzzarini C. Theory Meets Experiment for Noncovalent Complexes: The Puzzling Case of Pnicogen Interactions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807751] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Weixing Li
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Lorenzo Spada
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Nicola Tasinato
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Sergio Rampino
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Andrea Gualandi
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Sonia Melandri
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Vincenzo Barone
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Cristina Puzzarini
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 40126 Bologna Italy
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38
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Affiliation(s)
- Luca Evangelisti
- Dipartimento Di Chimica “Giacomo Ciamician”, University of Bologna , Bologna, Italy
| | - Lorenzo Spada
- Dipartimento Di Chimica “Giacomo Ciamician”, University of Bologna , Bologna, Italy
- Scuola Normale Superiore , Pisa, Italy
| | - Weixing Li
- Dipartimento Di Chimica “Giacomo Ciamician”, University of Bologna , Bologna, Italy
| | - Ilaria Federici
- Dipartimento Di Chimica “Giacomo Ciamician”, University of Bologna , Bologna, Italy
| | - Walther Caminati
- Dipartimento Di Chimica “Giacomo Ciamician”, University of Bologna , Bologna, Italy
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39
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Calabrese C, Maris A, Evangelisti L, Piras A, Parravicini V, Melandri S. Rotational Spectrum and Conformational Analysis of N-Methyl-2-Aminoethanol: Insights into the Shape of Adrenergic Neurotransmitters. Front Chem 2018. [PMID: 29520356 PMCID: PMC5827360 DOI: 10.3389/fchem.2018.00025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We describe an experimental and quantum chemical study for the accurate determination of the conformational space of small molecular systems governed by intramolecular non-covalent interactions. The model systems investigated belong to the biological relevant aminoalcohol's family, and include 2-amino-1-phenylethanol, 2-methylamino-1-phenylethanol, noradrenaline, adrenaline 2-aminoethanol, and N-methyl-2-aminoethanol. For the latter molecule, the rotational spectrum in the 6–18 and 59.6–74.4 GHz ranges was recorded in the isolated conditions of a free jet expansion. Based on the analysis of the rotational spectra, two different conformational species and 11 isotopologues were observed and their spectroscopic constants, including 14N-nuclear hyperfine coupling constants and methyl internal rotation barriers, were determined. From the experimental data a structural determination was performed, which was also used to benchmark accurate quantum chemical calculations on the whole conformational space. Atom in molecules and non-covalent interactions theories allowed the characterization of the position of the intramolecular non-covalent interactions and the energies involved, highlighting the subtle balance responsible of the stabilization of all the molecular systems.
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Affiliation(s)
- Camilla Calabrese
- Dipartimento di Chimica "G. Ciamician" dell'Università, Bologna, Italy
| | - Assimo Maris
- Dipartimento di Chimica "G. Ciamician" dell'Università, Bologna, Italy
| | - Luca Evangelisti
- Dipartimento di Chimica "G. Ciamician" dell'Università, Bologna, Italy
| | - Anna Piras
- Dipartimento di Chimica "G. Ciamician" dell'Università, Bologna, Italy
| | | | - Sonia Melandri
- Dipartimento di Chimica "G. Ciamician" dell'Università, Bologna, Italy
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40
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Feyer V, Prince KC, Coreno M, Melandri S, Maris A, Evangelisti L, Caminati W, Giuliano BM, Kjaergaard HG, Carravetta V. Quantum Effects for a Proton in a Low-Barrier, Double-Well Potential: Core Level Photoemission Spectroscopy of Acetylacetone. J Phys Chem Lett 2018; 9:521-526. [PMID: 29314844 DOI: 10.1021/acs.jpclett.7b03175] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have performed core level photoemission spectroscopy of gaseous acetylacetone, its fully deuterated form, and two derivatives, benzoylacetone and dibenzoylmethane. These molecules show intramolecular hydrogen bonds, with a proton located in a double-well potential, whose barrier height is different for the three compounds. This has allowed us to examine the effect of the double-well potential on photoemission spectra. Two distinct O 1s core hole peaks are observed, previously assigned to two chemical states of oxygen. We provide an alternative assignment of the double-peak structure of O 1s spectra by taking full account of the extended nature of the wave function associated with the nuclear motion of the proton, the shape of the ground and final state potentials in which the proton is located, and the nonzero temperature of the samples. The peaks are explained in terms of an unusual Franck-Condon factor distribution.
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Affiliation(s)
- Vitaliy Feyer
- Elettra-Sincrotrone Trieste , in Area Science Park, I-34149 Trieste, Italy
| | - Kevin C Prince
- Elettra-Sincrotrone Trieste , in Area Science Park, I-34149 Trieste, Italy
- Molecular Model Discovery Laboratory, Department of Chemistry and Biotechnology, Swinburne University of Technology , 3122 Melbourne, Australia
| | - Marcello Coreno
- ISM-CNR - Istituto di Struttura della Materia , LD2 unit, I-34149 Trieste, Italy
| | - Sonia Melandri
- Dipartimento di Chimica, "G. Ciamician" dell'Università , I-40126 Bologna, Italy
| | - Assimo Maris
- Dipartimento di Chimica, "G. Ciamician" dell'Università , I-40126 Bologna, Italy
| | - Luca Evangelisti
- Dipartimento di Chimica, "G. Ciamician" dell'Università , I-40126 Bologna, Italy
| | - Walther Caminati
- Dipartimento di Chimica, "G. Ciamician" dell'Università , I-40126 Bologna, Italy
| | - Barbara M Giuliano
- Departamento de Química, Universidade de Coimbra , 3004-535 Coimbra, Portugal
| | - Henrik G Kjaergaard
- Department of Chemistry, University of Copenhagen , 2100 Copenhagen, Denmark
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41
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Evangelisti L, Brendel K, Mäder H, Caminati W, Melandri S. Rotational Spectroscopy Probes Water Flipping by Full Fluorination of Benzene. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707155] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician”; Università degli Studi di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Kai Brendel
- Institut für Physikalische Chemie; Christian-Albrechts-Universität zu Kiel; Max-Eyth-Strasse 1 24118 Kiel Germany
| | - Heinrich Mäder
- Institut für Physikalische Chemie; Christian-Albrechts-Universität zu Kiel; Max-Eyth-Strasse 1 24118 Kiel Germany
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician”; Università degli Studi di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Sonia Melandri
- Dipartimento di Chimica “G. Ciamician”; Università degli Studi di Bologna; Via Selmi 2 40126 Bologna Italy
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42
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Evangelisti L, Brendel K, Mäder H, Caminati W, Melandri S. Rotational Spectroscopy Probes Water Flipping by Full Fluorination of Benzene. Angew Chem Int Ed Engl 2017; 56:13699-13703. [DOI: 10.1002/anie.201707155] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician”; Università degli Studi di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Kai Brendel
- Institut für Physikalische Chemie; Christian-Albrechts-Universität zu Kiel; Max-Eyth-Strasse 1 24118 Kiel Germany
| | - Heinrich Mäder
- Institut für Physikalische Chemie; Christian-Albrechts-Universität zu Kiel; Max-Eyth-Strasse 1 24118 Kiel Germany
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician”; Università degli Studi di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Sonia Melandri
- Dipartimento di Chimica “G. Ciamician”; Università degli Studi di Bologna; Via Selmi 2 40126 Bologna Italy
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43
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Gou Q, Favero LB, Feng G, Evangelisti L, Pérez C, Caminati W. Interactions between Ketones and Alcohols: Rotational Spectrum and Internal Dynamics of the Acetone-Ethanol Complex. Chemistry 2017; 23:11119-11125. [DOI: 10.1002/chem.201702090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Qian Gou
- Department of Chemistry; College of Chemistry and Chemical Engineering; Chongqing University; Daxuecheng South Rd. 55 401331 Chongqing P. R. China
| | - Laura B. Favero
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN); Sezione di Bologna CNR; Via Gobetti 101 40129 Bologna Italy
| | - Gang Feng
- Department of Chemistry; College of Chemistry and Chemical Engineering; Chongqing University; Daxuecheng South Rd. 55 401331 Chongqing P. R. China
| | - Luca Evangelisti
- Department of Chemistry; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Cristóbal Pérez
- Max Plank Institute for the Structure and Dynamics of Matter; The Hamburg Centre for Ultrafast Imaging at the Universität Hamburg; 22761 Hamburg Germany
| | - Walther Caminati
- Department of Chemistry; University of Bologna; Via Selmi 2 40126 Bologna Italy
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44
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Evangelisti L, Spada L, Li W, Vazart F, Barone V, Caminati W. The Borderline between Reactivity and Pre-reactivity of Binary Mixtures of Gaseous Carboxylic Acids and Alcohols. Angew Chem Int Ed Engl 2017; 56:3872-3875. [PMID: 28252840 DOI: 10.1002/anie.201612231] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 01/16/2017] [Indexed: 01/10/2023]
Abstract
By mixing primary and secondary alcohols with carboxylic acids just before the supersonic expansion within pulsed Fourier transform microwave experiments, only the rotational spectrum of the ester was observed. However, when formic acid was mixed with tertiary alcohols, adducts were formed and their rotational spectra could be easily measured. Quantum mechanical calculations were performed to interpret the experimental evidence.
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Affiliation(s)
- Luca Evangelisti
- Dipartimento di Chimica "G. Ciamician", University of Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Lorenzo Spada
- Dipartimento di Chimica "G. Ciamician", University of Bologna, Via Selmi 2, 40126, Bologna, Italy.,Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy
| | - Weixing Li
- Dipartimento di Chimica "G. Ciamician", University of Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Fanny Vazart
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy
| | - Walther Caminati
- Dipartimento di Chimica "G. Ciamician", University of Bologna, Via Selmi 2, 40126, Bologna, Italy
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45
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Evangelisti L, Spada L, Li W, Vazart F, Barone V, Caminati W. The Borderline between Reactivity and Pre-reactivity of Binary Mixtures of Gaseous Carboxylic Acids and Alcohols. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612231] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician”; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Lorenzo Spada
- Dipartimento di Chimica “G. Ciamician”; University of Bologna; Via Selmi 2 40126 Bologna Italy
- Scuola Normale Superiore; Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Weixing Li
- Dipartimento di Chimica “G. Ciamician”; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Fanny Vazart
- Scuola Normale Superiore; Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Vincenzo Barone
- Scuola Normale Superiore; Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician”; University of Bologna; Via Selmi 2 40126 Bologna Italy
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46
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Evangelisti L, Spada L, Li W, Blanco S, López JC, Lesarri A, Grabow JU, Caminati W. A butterfly motion of formic acid and cyclobutanone in the 1 : 1 hydrogen bonded molecular cluster. Phys Chem Chem Phys 2017; 19:204-209. [DOI: 10.1039/c6cp06941j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Large tunnelling splittings reveal the relative motions and the inversion pathway in the formic acid–cyclobutanone cluster.
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Affiliation(s)
- Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Lorenzo Spada
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Weixing Li
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Susana Blanco
- Departamento de Química Física y Química Inorgánica
- Facultad de Ciencias
- Universidad de Valladolid
- E-47011 Valladolid
- Spain
| | - Juan Carlos López
- Departamento de Química Física y Química Inorgánica
- Facultad de Ciencias
- Universidad de Valladolid
- E-47011 Valladolid
- Spain
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica
- Facultad de Ciencias
- Universidad de Valladolid
- E-47011 Valladolid
- Spain
| | - Jens-Uwe Grabow
- Institut für Physikalische Chemie und Elektrochemie
- Lehrgebiet A
- Gottfried-Wilhelm-Leibniz-Universität
- D-30167 Hannover
- Germany
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
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Evangelisti L, Gou Q, Feng G, Caminati W, Mead GJ, Finneran IA, Carroll PB, Blake GA. Conformational equilibrium and internal dynamics in the iso-propanol–water dimer. Phys Chem Chem Phys 2017; 19:568-573. [DOI: 10.1039/c6cp06315b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using rotational spectroscopy, we report characterization of two iso-propanol–water dimers. We further characterize the dynamics of one isomer.
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Affiliation(s)
- Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Qian Gou
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Gang Feng
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Griffin J. Mead
- Division of Chemistry and Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
| | - Ian A. Finneran
- Division of Chemistry and Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
| | - P. Brandon Carroll
- Division of Chemistry and Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
| | - Geoffrey A. Blake
- Division of Chemistry and Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
- Division of Geological and Planetary Sciences
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48
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Li W, Spada L, Evangelisti L, Caminati W. Conformational Equilibrium and Potential Energy Functions of the O–H Internal Rotation in the Axial and Equatorial Species of 1-Methylcyclohexanol. J Phys Chem A 2016; 120:4338-42. [DOI: 10.1021/acs.jpca.6b03854] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weixing Li
- Dipartimento di Chimica “G.
Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Lorenzo Spada
- Dipartimento di Chimica “G.
Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “G.
Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Walther Caminati
- Dipartimento di Chimica “G.
Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
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49
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Evangelisti L, Spada L, Li W, Ciurlini A, Grabow JU, Caminati W. Shape of the Adduct Formic Acid–Dimethyl Ether: A Rotational Study. J Phys Chem A 2016; 120:2863-7. [DOI: 10.1021/acs.jpca.6b02912] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luca Evangelisti
- Dipartimento
di Chimica, “G. Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Lorenzo Spada
- Dipartimento
di Chimica, “G. Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Weixing Li
- Dipartimento
di Chimica, “G. Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Anna Ciurlini
- Dipartimento
di Chimica, “G. Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
| | - Jens-Uwe Grabow
- Institut
für Physikalische Chemie und Elektrochemie, Lehrgebiet A, Gottfried-Wilhelm-Leibniz-Universität, Callinstrasse 3A, D-30167 Hannover, Germany
| | - Walther Caminati
- Dipartimento
di Chimica, “G. Ciamician” dell’Università, Via Selmi 2, I-40126 Bologna, Italy
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50
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Caminati W, Evangelisti L, Feng G, Giuliano BM, Gou Q, Melandri S, Grabow JU. On the Cl⋯C halogen bond: a rotational study of CF3Cl–CO. Phys Chem Chem Phys 2016; 18:17851-5. [DOI: 10.1039/c6cp01059h] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A Cl⋯C halogen bond links CF3Cl to CO in their symmetric top 1 : 1 adduct.
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Affiliation(s)
- Walther Caminati
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Gang Feng
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Barbara M. Giuliano
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
- Max-Planck-Institut für extraterrestrische Physik
- 85748 Garching
| | - Qian Gou
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Sonia Melandri
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Jens-Uwe Grabow
- Institut für Physikalische Chemie und Elektrochemie
- Lehrgebiet A
- Gottfried-Wilhelm-Leibniz-Universität Callinstrasse 3A
- D-30167 Hannover
- Germany
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