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Ligny R, Gauthier ES, Yáñez M, Roisnel T, Guillemin JC, Trolez Y. One-step synthesis of conjugated enynenitriles from bromocyanoacetylene. Org Biomol Chem 2017; 15:6050-6056. [DOI: 10.1039/c6ob02590k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bromocyanoacetylene is able to provide conjugated enynenitriles stereoselectively in one step from alkynes, secondary amines and co-catalysts.
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Affiliation(s)
- Romain Ligny
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR 6226
- CNRS
- 35708 Rennes Cedex 7
- France
| | - Etienne S. Gauthier
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR 6226
- CNRS
- 35708 Rennes Cedex 7
- France
| | | | - Thierry Roisnel
- Centre de Diffractométrie X
- Institut des Sciences Chimiques de Rennes
- CNRS (UMR 6226)
- Université de Rennes 1
- 35042 Rennes Cedex
| | - Jean-Claude Guillemin
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR 6226
- CNRS
- 35708 Rennes Cedex 7
- France
| | - Yann Trolez
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR 6226
- CNRS
- 35708 Rennes Cedex 7
- France
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2
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Møllendal H, Samdal S, Guillemin JC. Rotational Spectrum, Conformational Composition, Intramolecular Hydrogen Bonding, and Quantum Chemical Calculations of Mercaptoacetonitrile (HSCH2C≡N), a Compound of Potential Astrochemical Interest. J Phys Chem A 2016; 120:1992-2001. [PMID: 26974178 DOI: 10.1021/acs.jpca.6b01600] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The microwave spectra of mercaptoacetonitrile (HSCH2C≡N) and one deuterated species (DSCH2C≡N) were investigated in the 7.5-124 GHz spectral interval. The spectra of two conformers denoted SC and AP were assigned. The H-S-C-C chain of atoms is synclinal in SC and anti-periplanar in AP. The ground state of SC is split into two substates separated by a comparatively small energy difference resulting in closely spaced transitions with equal intensities. Several transitions of the parent species of SC deviate from Watson's Hamiltonian. Only slight improvements were obtained using a Hamiltonian that takes coupling between the two substates into account. Deviations from Watson's Hamiltonian were also observed for the parent species of AP. However, the spectrum of the deuterated species, which was investigated only for the SC conformer, fits satisfactorily to Watson's Hamiltonian. Relative intensity measurements found SC to be lower in energy than AP by 3.8(3) kJ/mol. The strength of the intramolecular hydrogen bond between the thiol and cyano groups was estimated to be ∼2.1 kJ/mol. The microwave work was augmented by quantum chemical calculations at CCSD and MP2 levels using basis sets of minimum triple-ζ quality. Mercaptoacetonitrile has astrochemical interest, and the spectra presented herein should be useful for a potential identification of this compound in the interstellar medium. Three different ways of generating mercaptoacetonitrile from compounds already found in the interstellar medium were explored by quantum chemical calculations.
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Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo , P.O. Box 1033, Blindern, NO-0315 Oslo, Norway
| | - Svein Samdal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo , P.O. Box 1033, Blindern, NO-0315 Oslo, Norway
| | - Jean-Claude Guillemin
- Institut des Sciences Chimiques de Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226 , 11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France
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3
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Monney NPA, Bally T, Yamamoto T, Glass RS. Spectroscopic Evidence for Through-Space Arene–Sulfur–Arene Bonding Interaction in m-Terphenyl Thioether Radical Cations. J Phys Chem A 2015; 119:12990-8. [DOI: 10.1021/acs.jpca.5b09665] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Thomas Bally
- Department
of Chemistry, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Takuhei Yamamoto
- Department
of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona 85721, United States
| | - Richard S. Glass
- Department
of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona 85721, United States
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Surajbali P, Ramanah DK, Rhyman L, Alswaidan IA, Fun HK, Somanah R, Ramasami P. Density Functional Theory Study of Cyanoetheneselenol: A Molecule of Astrobiological Interest. ORIGINS LIFE EVOL B 2015; 45:455-68. [PMID: 26088762 DOI: 10.1007/s11084-015-9436-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 03/18/2015] [Indexed: 11/28/2022]
Abstract
The interstellar medium has a rich chemistry which involves a wide variety of molecules. Of particular interest are molecules that have a link to prebiotic chemistry which hold the key to understanding of our origins. On the basis of suggestions that selenium may have been involved in the origin and evolution of life, we have studied the selenium analogue of cyanoethenethiol, namely the novel cyanoetheneselenol. Cyanoetheneselenol exhibits conformational and geometrical isomerism. This theoretical work deals with the study of four forms of cyanoetheneselenol in terms of their structural, spectroscopic and thermodynamic parameters. All computations were performed using density functional theory method with the B3LYP functional and the Pople basis set, 6-311 + G(d,p), for all atoms. The relative stability of the four isomers of cyanoetheneselenol was obtained and interpreted. The infrared spectra were generated and assignment of the normal modes of vibration was performed. Probable regions of detection, proposed on the basis of parameters obtained from this study for the four isomers, include comets, the molecular cloud: Sagittarius B2(N), and planetary atmospheres. The molecular and spectroscopic parameters should be useful for future identification of the astrobiological molecule cyanoetheneselenol and the development of the Square Kilometre Array. Graphical Abstract E and Z isomers of cyanoetheneselenol.
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Affiliation(s)
- P Surajbali
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, 80837, Mauritius
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Møllendal H, Samdal S, Guillemin JC. Microwave and Quantum Chemical Study of the Hydrazino Group as Proton Donor in Intramolecular Hydrogen Bonding of (2-Fluoroethyl)hydrazine (FCH2CH2NHNH2). J Phys Chem A 2015; 119:9252-61. [PMID: 26258892 DOI: 10.1021/acs.jpca.5b06095] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The microwave spectrum of (2-fluoroethyl)hydrazine (FCH2CH2NHNH2) was studied in the 11-123 GHz spectral region to investigate the ability of the hydrazino group to form intramolecular hydrogen bonds acting as a proton donor. This group can participate both in five-member and in six-member internal hydrogen bonds with the fluorine atom. The spectra of four conformers were assigned, and the rotational and centrifugal distortion constants of these rotameric forms were determined. Two of these conformers have five-member intramolecular hydrogen bonds, while the two other forms are without this interaction. The internal hydrogen bonds in the two hydrogen-bonded forms are assumed to be mainly electrostatic in origin because the N-H and C-F bonds are nearly parallel and the associated bond moments are antiparallel. This is the first example of a gas-phase study of a hydrazine where the hydrazino functional group acts as a proton donor in weak intramolecular hydrogen bonds. Extensive quantum chemical calculations at the B3LYP/cc-pVTZ, MP2/cc-pVTZ, and CCSD/cc-pVQZ levels of theory accompanied and guided the experimental work. These calculations predict the existence of no less than 18 conformers, spanning a CCSD internal energy range of 15.4 kJ/mol. Intramolecular hydrogen bonds are predicted to be present in seven of these conformers. Three of these forms have six-member hydrogen bonds, while four have five-member hydrogen bonds. The three lowest-energy conformers have five-member internal hydrogen bonds. The spectrum of the conformer with the lowest energy was not assigned because it has a very small dipole moment. The CCSD relative energies of the two hydrogen-bonded rotamers whose spectra were assigned are 1.04 and 1.62 kJ/mol, respectively, whereas the relative energies of the two conformers with assigned spectra and no hydrogen bonds have relative energies of 6.46 and 4.89 kJ/mol.
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Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, Blindern , P.O. Box 1033, NO-0315 Oslo, Norway
| | - Svein Samdal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, Blindern , P.O. Box 1033, NO-0315 Oslo, Norway
| | - Jean-Claude Guillemin
- Institut des Sciences Chimiques de Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226 , 11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France
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6
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Møllendal H, Samdal S, Guillemin JC. Microwave and quantum-chemical study of conformational properties and intramolecular hydrogen bonding of 2-hydroxy-3-butynenitrile (HC≡CCH(OH)C≡N). J Phys Chem A 2015; 119:634-40. [PMID: 25560047 DOI: 10.1021/jp5112923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The microwave spectra of 2-hydroxy-3-butynenitrile, HC≡CCH(OH)C≡N, and a deuterated species, HC≡CCH(OD)C≡N, have been investigated in the 38-120 GHz spectral region. Three rotameric forms, each stabilized by intramolecular hydrogen bonds, are possible for this compound. The hydrogen atom of the hydroxyl group is hydrogen-bonded to the π electrons of the alkynyl group in one of these conformers, to the π electrons of the cyano group in the second rotamer, and to both of these groups simultaneously in the third conformer. The microwave spectra of the parent and deuterated species of last-mentioned form have been assigned, and accurate values of the rotational and quartic centrifugal distortion constants of these species have been determined. The spectra of two vibrational excited states of this conformer have also been assigned, and their frequencies have been determined by relative intensity measurements. Quantum-chemical calculations at the MP2/cc-pVTZ and CCSD/cc-pVQZ levels were performed to assist the microwave work. The theoretical predictions were generally found to be in good agreement with observations.
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Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo , P.O. Box 1033 Blindern, NO-0315 Oslo, Norway
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Berrueta Martínez Y, Rodríguez Pirani LS, Erben MF, Reuter CG, Vishnevskiy YV, Stammler HG, Mitzel NW, Della Védova CO. The structure of chloromethyl thiocyanate, CH2ClSCN, in gas and crystalline phases. Phys Chem Chem Phys 2015; 17:15805-12. [DOI: 10.1039/c5cp01968k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The structural and conformational properties of chloromethyl thiocyanate, CH2ClSCN, were studied in the solid phase and in the gas phase usingin situlow-temperature single-crystal X-ray diffraction experiments (XRD) and gas electron diffraction (GED), respectively.
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Affiliation(s)
- Y. Berrueta Martínez
- CEQUINOR (UNLP-CONICET)
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- 1900 La Plata
| | - L. S. Rodríguez Pirani
- CEQUINOR (UNLP-CONICET)
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- 1900 La Plata
| | - M. F. Erben
- CEQUINOR (UNLP-CONICET)
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- 1900 La Plata
| | - C. G. Reuter
- Lehrstuhl für Anorganische Chemie und Strukturchemie
- Universität Bielefeld
- 33615 Bielefeld
- Germany
| | - Y. V. Vishnevskiy
- Lehrstuhl für Anorganische Chemie und Strukturchemie
- Universität Bielefeld
- 33615 Bielefeld
- Germany
| | - H. G. Stammler
- Lehrstuhl für Anorganische Chemie und Strukturchemie
- Universität Bielefeld
- 33615 Bielefeld
- Germany
| | - N. W. Mitzel
- Lehrstuhl für Anorganische Chemie und Strukturchemie
- Universität Bielefeld
- 33615 Bielefeld
- Germany
| | - C. O. Della Védova
- CEQUINOR (UNLP-CONICET)
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- 1900 La Plata
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Møllendal H, Samdal S, Guillemin JC. Microwave spectrum and intramolecular hydrogen bonding of 2-isocyanoethanol (HOCH(2)CH(2)N≡C). J Phys Chem A 2014; 118:3120-7. [PMID: 24694084 DOI: 10.1021/jp502212n] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The microwave spectrum of 2-isocyanoethanol (HOCH2CH2NC) has been investigated in the 12-120 GHz spectral range. The assignment of this spectrum was severely complicated by the rapid transformation of 2-isocyanoethanol into its isomer 2-oxazoline, which has a rich and strong spectrum. This process appeared both in a gold-plated microwave cell and in a brass cell and is presumed to be catalyzed by metals or traces of base. The spectrum of one conformer was ultimately assigned. This form is stabilized by an intramolecular hydrogen bond between the hydroxyl group and the isocyano group and is the first gas-phase study ever of this kind of hydrogen bonding. The distance between the hydrogen atom of the hydroxyl group and the nitrogen and carbon atoms are as long as 256 and 298 pm, respectively, indicating that covalent contribution to the hydrogen bond is minimal. Electrostatic forces are much more important because the O-H and N≡C bonds are almost parallel and the corresponding bond moments are practically antiparallel. The microwave work has been augmented by quantum chemical calculations at the CCSD(T)/cc-pVTZ and MP2/cc-pVTZ levels of theory. Results of these calculations are generally in good agreement with experimental findings.
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Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo , Blindern, NO-0315 Oslo, Norway
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Menor-Salván C, Marín-Yaseli MR. Prebiotic chemistry in eutectic solutions at the water-ice matrix. Chem Soc Rev 2012; 41:5404-15. [PMID: 22660387 DOI: 10.1039/c2cs35060b] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A crystalline ice matrix at subzero temperatures can maintain a liquid phase where organic solutes and salts concentrate to form eutectic solutions. This concentration effect converts the confined reactant solutions in the ice matrix, sometimes making condensation and polymerisation reactions occur more favourably. These reactions occur at significantly high rates from a prebiotic chemistry standpoint, and the labile products can be protected from degradation. The experimental study of the synthesis of nitrogen heterocycles at the ice-water system showed the efficiency of this scenario and could explain the origin of nucleobases in the inner Solar System bodies, including meteorites and extra-terrestrial ices, and on the early Earth. The same conditions can also favour the condensation of monomers to form ribonucleic acid and peptides. Together with the synthesis of these monomers, the ice world (i.e., the chemical evolution in the range between the freezing point of water and the limit of stability of liquid brines, 273 to 210 K) is an under-explored experimental model in prebiotic chemistry.
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Affiliation(s)
- César Menor-Salván
- Centro de Astrobiología (INTA-CSIC), INTA, E-28850 Torrejón de Ardoz, Spain.
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Møllendal H, Margulès L, Motiyenko RA, Larsen NW, Guillemin JC. Rotational Spectrum and Conformational Composition of Cyanoacetaldehyde, a Compound of Potential Prebiotic and Astrochemical Interest. J Phys Chem A 2012; 116:4047-56. [DOI: 10.1021/jp212306z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational
Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO 0315 Oslo, Norway
| | - Laurent Margulès
- Laboratoire de Physique des
Lasers, Atomes, et Molécules, UMR CNRS 8523, Université de Lille I, F-59655 Villeneuve d’Ascq Cédex,
France
| | - Roman A. Motiyenko
- Laboratoire de Physique des
Lasers, Atomes, et Molécules, UMR CNRS 8523, Université de Lille I, F-59655 Villeneuve d’Ascq Cédex,
France
| | - Niels Wessel Larsen
- Department of Chemistry, University of Copenhagen, The H. C. Ørsted Institute,
Universitetsparken 5, DK 2100 Copenhagen Ø, Denmark
| | - Jean-Claude Guillemin
- Sciences Chimiques de Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837,
35708 Rennes Cedex 7, France
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Møllendal H, Samdal S, Matrane A, Guillemin JC. Synthesis, microwave spectrum, and dipole moment of allenylisocyanide (H2C═C═CHNC), a compound of potential astrochemical interest. J Phys Chem A 2011; 115:7978-83. [PMID: 21644586 DOI: 10.1021/jp204296n] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An improved synthesis of a compound of potential astrochemical interest, allenylisocyanide (H(2)C═C═CHNC), is reported together with its microwave spectrum, which has been investigated in the 8-120 GHz spectral range to facilitate a potential identification in interstellar space. The spectra of the ground vibrational state and of five vibrationally excited states belonging to three different vibrational modes have been assigned for the parent species. A total of 658 transitions with a maximum value of J = 71 were assigned for the ground state and accurate values obtained for the rotational and quartic centrifugal distortion constants. The spectra of five heavy-atom ((13)C and (15)N) isotopologues were also assigned. The dipole moment was determined to be μ(a) = 11.93(16) × 10(-30) C m, μ(b) = 4.393(44) × 10(-30) C m, and μ(tot) = 12.71(16) × 10(-30) C m. The spectroscopic work has been augmented by theoretical calculations at the CCSD/cc-pVTZ and B3LYP/cc-pVTZ levels of theory. The theoretical calculations are generally in good agreement with the experimental results.
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Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway.
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Bénidar A, Georges R, Guillemin JC, Mó O, Yáñez M. Infrared Spectra of a Species of Potential Prebiotic and Astrochemical Interest: Cyanoethenethiol (NC−CH═CH−SH). J Phys Chem A 2010; 114:9583-8. [DOI: 10.1021/jp105650e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Abdessamad Bénidar
- Institut de Physique de Rennes, CNRS UMR 6251, Université de Rennes 1, 35042 Rennes France, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049-Madrid, Spain
| | - Robert Georges
- Institut de Physique de Rennes, CNRS UMR 6251, Université de Rennes 1, 35042 Rennes France, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049-Madrid, Spain
| | - Jean-Claude Guillemin
- Institut de Physique de Rennes, CNRS UMR 6251, Université de Rennes 1, 35042 Rennes France, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049-Madrid, Spain
| | - Otilia Mó
- Institut de Physique de Rennes, CNRS UMR 6251, Université de Rennes 1, 35042 Rennes France, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049-Madrid, Spain
| | - Manuel Yáñez
- Institut de Physique de Rennes, CNRS UMR 6251, Université de Rennes 1, 35042 Rennes France, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049-Madrid, Spain
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Møllendal H, Konovalov A, Guillemin JC. Microwave Spectrum and Intramolecular Hydrogen Bonding of Propargyl Selenol (HC≡CCH2SeH). J Phys Chem A 2010; 114:5537-43. [DOI: 10.1021/jp101245f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, and Université européenne de Bretagne, 5 Boulevard Laënnec, 35000 Rennes, France
| | - Alexey Konovalov
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, and Université européenne de Bretagne, 5 Boulevard Laënnec, 35000 Rennes, France
| | - Jean-Claude Guillemin
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, and Université européenne de Bretagne, 5 Boulevard Laënnec, 35000 Rennes, France
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Møllendal H, Khater B, Guillemin JC. Synthesis, microwave spectrum, and conformational equilibrium of propa-1,2-dienethiol (H(2)=C=CHSH). J Phys Chem A 2009; 113:5906-11. [PMID: 19402682 DOI: 10.1021/jp901817m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The first synthesis of the kinetically unstable compound propa-1,2-dienethiol (allenethiol; H(2)CCCHSH) is reported. Its microwave spectrum has been studied in the 41.5-80 GHz spectral range. The spectra of two rotameric forms have been assigned. The C-C-S-H chain of atoms is synperiplanar (0 degrees ) in one of the conformers. This dihedral angle is anticlinal in the second rotamer forming an angle of 140(5) degrees in the second form. The synperiplanar conformer is found to be 1.0(6) kJ/mol more stable than the anticlinal rotamer. The microwave study has been augmented by quantum chemical calculations at the MP2/aug-cc-pVTZ and B3LYP/6-311++G** levels of theory. The predictions of these two theoretical methods are in excellent agreement with the experimental findings.
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Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway.
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Møllendal H, Konovalov A, Guillemin JC. Microwave Spectrum and Intramolecular Hydrogen Bonding of 2-Propene-1-selenol (H2C═CHCH2SeH). J Phys Chem A 2009; 113:6342-7. [DOI: 10.1021/jp902215b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, and Université européenne de Bretagne
| | - Alexey Konovalov
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, and Université européenne de Bretagne
| | - Jean-Claude Guillemin
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, École Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France, and Université européenne de Bretagne
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Chrostowska A, Nguyen TXM, Dargelos A, Khayar S, Graciaa A, Guillemin JC. β-Heterosubstituted Acrylonitriles − Electronic Structure Study by UV-Photoelectron Spectroscopy and Quantum Chemical Calculations. J Phys Chem A 2009; 113:2387-96. [DOI: 10.1021/jp8087447] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Anna Chrostowska
- Institut Pluridisciplinaire de Recherche sur l’Environnement et les Matériaux, Université de Pau et des Pays de l’Adour − CNRS − UMR 5254, 64000 Pau, France, Laboratoire des Fluides Complexes, Université de Pau et des Pays de l’Adour − CNRS − UMR 5150, 64000 Pau, France, and Sciences Chimiques de Rennes, Ecole Nationale Supérieure de Chimie de Rennes − CNRS, 35708 Rennes, France
| | - Thi Xuan Mai Nguyen
- Institut Pluridisciplinaire de Recherche sur l’Environnement et les Matériaux, Université de Pau et des Pays de l’Adour − CNRS − UMR 5254, 64000 Pau, France, Laboratoire des Fluides Complexes, Université de Pau et des Pays de l’Adour − CNRS − UMR 5150, 64000 Pau, France, and Sciences Chimiques de Rennes, Ecole Nationale Supérieure de Chimie de Rennes − CNRS, 35708 Rennes, France
| | - Alain Dargelos
- Institut Pluridisciplinaire de Recherche sur l’Environnement et les Matériaux, Université de Pau et des Pays de l’Adour − CNRS − UMR 5254, 64000 Pau, France, Laboratoire des Fluides Complexes, Université de Pau et des Pays de l’Adour − CNRS − UMR 5150, 64000 Pau, France, and Sciences Chimiques de Rennes, Ecole Nationale Supérieure de Chimie de Rennes − CNRS, 35708 Rennes, France
| | - Saïd Khayar
- Institut Pluridisciplinaire de Recherche sur l’Environnement et les Matériaux, Université de Pau et des Pays de l’Adour − CNRS − UMR 5254, 64000 Pau, France, Laboratoire des Fluides Complexes, Université de Pau et des Pays de l’Adour − CNRS − UMR 5150, 64000 Pau, France, and Sciences Chimiques de Rennes, Ecole Nationale Supérieure de Chimie de Rennes − CNRS, 35708 Rennes, France
| | - Alain Graciaa
- Institut Pluridisciplinaire de Recherche sur l’Environnement et les Matériaux, Université de Pau et des Pays de l’Adour − CNRS − UMR 5254, 64000 Pau, France, Laboratoire des Fluides Complexes, Université de Pau et des Pays de l’Adour − CNRS − UMR 5150, 64000 Pau, France, and Sciences Chimiques de Rennes, Ecole Nationale Supérieure de Chimie de Rennes − CNRS, 35708 Rennes, France
| | - Jean-Claude Guillemin
- Institut Pluridisciplinaire de Recherche sur l’Environnement et les Matériaux, Université de Pau et des Pays de l’Adour − CNRS − UMR 5254, 64000 Pau, France, Laboratoire des Fluides Complexes, Université de Pau et des Pays de l’Adour − CNRS − UMR 5150, 64000 Pau, France, and Sciences Chimiques de Rennes, Ecole Nationale Supérieure de Chimie de Rennes − CNRS, 35708 Rennes, France
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Horn A, Møllendal H, Guillemin JC. A Quantum Chemical Study of the Generation of a Potential Prebiotic Compound, Cyanoacetaldehyde, and Related Sulfur Containing Species. J Phys Chem A 2008; 112:11009-16. [DOI: 10.1021/jp805357w] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anne Horn
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, and Sciences Chimiques de Rennes, École Nationale Supérieure de Chimie de Rennes-CNRS, F-35700 Rennes, France
| | - Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, and Sciences Chimiques de Rennes, École Nationale Supérieure de Chimie de Rennes-CNRS, F-35700 Rennes, France
| | - Jean-Claude Guillemin
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, NO-0315 Oslo, Norway, and Sciences Chimiques de Rennes, École Nationale Supérieure de Chimie de Rennes-CNRS, F-35700 Rennes, France
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Møllendal H. Microwave Spectrum, Conformation and Intramolecular Hydrogen Bonding of 2,2,2-Trifluoroethanethiol (CF3CH2SH). J Phys Chem A 2008; 112:7481-7. [DOI: 10.1021/jp803481k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, Post Office Box 1033 Blindern, NO-0315, Oslo Norway
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Møllendal H, Mokso R, Guillemin JC. A Microwave Spectroscopic and Quantum Chemical Study of 3-Butyne-1-selenol (HSeCH2CH2C⋮CH). J Phys Chem A 2008; 112:3053-60. [DOI: 10.1021/jp7112973] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Harald Møllendal
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P. O. Box 1033 Blindern, NO-0315 Oslo, Norway, and Sciences Chimiques de Rennes, UMR 6226 CNRS-ENSCR, École National Supérieure de Chimie de Rennes, F-35700 Rennes, France
| | - Rajmund Mokso
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P. O. Box 1033 Blindern, NO-0315 Oslo, Norway, and Sciences Chimiques de Rennes, UMR 6226 CNRS-ENSCR, École National Supérieure de Chimie de Rennes, F-35700 Rennes, France
| | - Jean-Claude Guillemin
- Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P. O. Box 1033 Blindern, NO-0315 Oslo, Norway, and Sciences Chimiques de Rennes, UMR 6226 CNRS-ENSCR, École National Supérieure de Chimie de Rennes, F-35700 Rennes, France
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Erben MF, Boese R, Willner H, Della Védova CO. Chlorodifluorothioacetic Acid, CF2ClC(O)SH: Synthesis, Characterization, X-ray Structure and Conformational Properties. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700349] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Møllendal H. A microwave and quantum chemical study of (trifluoromethyl)thiolacetic acid, CF3COSH, a compound with an unusual double-minimum potential. J Phys Chem A 2007; 111:1891-8. [PMID: 17388280 DOI: 10.1021/jp0677290] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The microwave spectra of CF3COSH and one deuterated species, CF3COSD, have been investigated by Stark spectroscopy in the 40-80 GHz spectral range at -78 degrees C and by quantum chemical calculations using the HF, MP2, and B3LYP procedures with the aug-cc-pVTZ basis set. The microwave spectrum of one conformer was assigned. The conformations of the COSH and CF3 groups determine the overall conformation of this rotamer. It was not possible experimentally to find precise values for the associated dihedral angles, but it appears that the COSH group is distorted somewhat from an exact synperiplanar arrangement, while the CF3 group is rotated several degrees from a position where one of the C-F bonds eclipses the C-S bond. This rotamer tunnels through a transition state that has an exact Cs symmetry, where one C-F bond eclipses the C-S bond and the COSH group is synperiplanar. Relative intensity measurements yielded 28(15) cm-1 for the tunneling frequency. Two additional vibrationally excited states were assigned and their frequencies determined to be 94(30) and 184(40) cm-1, respectively. The theoretical calculations predict conflicting conformational properties for the identified rotamer. The B3LYP calculations find an exact synperiplanar arrangement for the COSH group, whereas the MP2 and HF calculations predict that this group is distorted slightly form this conformation. One of the C-F bonds is found to eclipse the C-S bond in the B3LYP calculations, while the MP2 calculations predict a slight deviation and the HF calculations a large deviation from the eclipsed position, as the corresponding F-C-C-S dihedral angle is calculated to be 0.9 degrees (MP2) and 27.6 degrees (HF). All three methods of calculations predict that a second rotamer coexists with the identified form but is several kJ/mol less stable. The spectrum of this form, which has overall Cs symmetry and is predicted to have an antiperiplanar conformation for the COSH group with one of the C-F bonds eclipsing the C=O bond, was not identified.
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Affiliation(s)
- Harald Møllendal
- Department of Chemistry, University of Oslo, Post Office Box 1033 Blindern, NO-0315 Oslo, Norway.
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