1
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Vogt E, Bertran Valls P, Kjaergaard HG. Accurate Calculations of OH-Stretching Intensities with a Reduced-Dimensional Local Mode Model Including Eckart Axis Embedding. J Phys Chem A 2020; 124:932-942. [DOI: 10.1021/acs.jpca.9b10682] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Emil Vogt
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø Copenhagen, Denmark
| | - Pablo Bertran Valls
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø Copenhagen, Denmark
| | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø Copenhagen, Denmark
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2
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Hansen AS, Vogt E, Kjaergaard HG. Gibbs energy of complex formation – combining infrared spectroscopy and vibrational theory. INT REV PHYS CHEM 2019. [DOI: 10.1080/0144235x.2019.1608689] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Anne S. Hansen
- Department of Chemistry, University of Copenhagen, Copenhagen Ø, Denmark
| | - Emil Vogt
- Department of Chemistry, University of Copenhagen, Copenhagen Ø, Denmark
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3
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Sibert EL. Modeling vibrational anharmonicity in infrared spectra of high frequency vibrations of polyatomic molecules. J Chem Phys 2019; 150:090901. [DOI: 10.1063/1.5079626] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Edwin L. Sibert
- Department of Chemistry and Theoretical Chemistry Institute, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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4
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Jeon K, Yang M. Anharmonic Stretching Frequencies of Local OH Bonds in Water Dimer:
Ab Initio
Potential Energy and Discrete Variable Representation. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11645] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kiyoung Jeon
- Department of ChemistryChungbuk National University Cheongju 28644 South Korea
| | - Mino Yang
- Department of ChemistryChungbuk National University Cheongju 28644 South Korea
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5
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Miller RJD. Ultrafast imaging of photochemical dynamics: roadmap to a new conceptual basis for chemistry. Faraday Discuss 2018; 194:777-828. [PMID: 27991637 DOI: 10.1039/c6fd00241b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- R J Dwayne Miller
- The Max Planck Institute for the Structure and Dynamics of Matter, The Hamburg Centre for Ultrafast Imaging, Luruper Chausse 149, Hamburg 22607, Germany. and Departments of Chemistry and Physics, University of Toronto, 80 St. George Street, Toronto, Ontario L5G 3J6, Canada
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6
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Møller KH, Kjaersgaard A, Hansen AS, Du L, Kjaergaard HG. Hybridization of Nitrogen Determines Hydrogen-Bond Acceptor Strength: Gas-Phase Comparison of Redshifts and Equilibrium Constants. J Phys Chem A 2018; 122:3899-3908. [DOI: 10.1021/acs.jpca.8b00541] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kristian H. Møller
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Alexander Kjaersgaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Anne S. Hansen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Lin Du
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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7
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Ischenko AA, Weber PM, Miller RJD. Capturing Chemistry in Action with Electrons: Realization of Atomically Resolved Reaction Dynamics. Chem Rev 2017; 117:11066-11124. [DOI: 10.1021/acs.chemrev.6b00770] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Anatoly A. Ischenko
- Institute
of Fine Chemical Technologies, Moscow Technological University, Vernadskogo
86, 119571 Moscow, Russia
| | - Peter M. Weber
- Department
of Chemistry, Brown University, 324 Brook Street, 02912 Providence, Rhode Island, United States
| | - R. J. Dwayne Miller
- The Max Planck Institute for the Structure and Dynamics of Matter, Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
- Departments
of Chemistry and Physics, University of Toronto, 80 St. George, M5S 3H6 Toronto, Canada
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8
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Lopes Jesus AJ, Fausto R, Reva I. Conformational Changes in 5-Methoxyindole: Effects of Thermal, Vibrational, and Electronic Excitations. J Phys Chem A 2017; 121:3372-3382. [DOI: 10.1021/acs.jpca.7b01713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. J. Lopes Jesus
- CQC,
Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
- CQC,
Faculty of Pharmacy, University of Coimbra, 3004-295 Coimbra, Portugal
| | - R. Fausto
- CQC,
Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - I. Reva
- CQC,
Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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9
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Møller KH, Tram CM, Kjaergaard HG. Side-by-Side Comparison of Hydroperoxide and Corresponding Alcohol as Hydrogen-Bond Donors. J Phys Chem A 2017; 121:2951-2959. [DOI: 10.1021/acs.jpca.7b01323] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kristian H. Møller
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Camilla Mia Tram
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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10
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Schrøder SD, Hansen AS, Wallberg JH, Nielsen AR, Du L, Kjaergaard HG. The weak fundamental NH-stretching transition in amines. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:201-206. [PMID: 27664544 DOI: 10.1016/j.saa.2016.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 08/30/2016] [Accepted: 09/01/2016] [Indexed: 06/06/2023]
Abstract
Absolute intensities of NH-stretching fundamental and overtone transitions of gas phase aniline, methylamine, ethylamine, cyclopropylamine, methylethylamine, diethylamine and pyrrolidine have been measured with long path length conventional absorption spectroscopy. To support the assignments of NH-stretching transitions, transition frequencies and intensities were calculated with the local mode model using ab initio calculated local mode parameters and dipole moment functions obtained at the CCSD(T)-F12a/VDZ-F12 level of theory. For aniline, the absolute intensities of the NH-stretching transitions show the typical decrease of approximately an order of magnitude for each successive vibrational excitation. For methylamine, ethylamine, cyclopropylamine, methylethylamine, diethylamine and pyrrolidine, the observed absolute intensities of the fundamental NH-stretching transition is weak and of similar strength or even weaker than the corresponding first overtone transition. Characteristic for the amines with a normal fundamental intensity is a conjugated double bond next to the amine group.
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Affiliation(s)
- Sidsel D Schrøder
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø DK-2100, Denmark
| | - Anne S Hansen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø DK-2100, Denmark
| | - Jens H Wallberg
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø DK-2100, Denmark
| | - Anne R Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø DK-2100, Denmark
| | - Lin Du
- Environment Research Institute, Shandong University, Shanda South Road 27, Jinan, Shandong, China
| | - Henrik G Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø DK-2100, Denmark.
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11
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Du L, Tang S, Hansen AS, Frandsen BN, Maroun Z, Kjaergaard HG. Subtle differences in the hydrogen bonding of alcohol to divalent oxygen and sulfur. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2016.11.045] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Partanen L, Hänninen V, Halonen L. Effects of Global and Local Anharmonicities on the Thermodynamic Properties of Sulfuric Acid Monohydrate. J Chem Theory Comput 2016; 12:5511-5524. [PMID: 27662456 DOI: 10.1021/acs.jctc.6b00683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We use state-of-the-art electronic structure calculation methods and large basis sets to obtain reliable values for the thermodynamic properties of sulfuric acid monohydrate and study the effects of vibrational anharmonicity on these properties. We distinguish between two forms of vibrational anharmonicity: local anharmonicity, which refers to the anharmonicity of the vibrational modes of a given cluster conformer, and global anharmonicity, which originates from accounting for the presence of different conformers in the first place. In our most accurate approach, we solve the nuclear Schrödinger equation variationally for the intermolecular large-amplitude motions, thus quantum-mechanically accounting for the presence of higher-energy conformers for both reactants and products, while using the standard vibrational perturbational approach for the other vibrational modes. This results in a value of -11.0 kJ/mol for the reaction Gibbs free energy at 298.15 K. When standard vibrational perturbational approaches are employed, the effects of local anharmonicity depend heavily on the choice of the electronic structure calculation basis set. In fact, better results can often be achieved by combining a simple harmonic treatment for the vibrational partition function with a statistical mechanical accounting of global anharmonicity. Thus, we recommend that future studies that intend to include anharmonicity start by accounting for the presence of higher-energy conformers and only then consider whether local anharmonicity calculations are feasible and necessary.
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Affiliation(s)
- Lauri Partanen
- Laboratory of Physical Chemistry, Department of Chemistry, University of Helsinki , P.O. Box 55, A.I. Virtasen aukio 1, FIN-00014 Helsinki, Finland
| | - Vesa Hänninen
- Laboratory of Physical Chemistry, Department of Chemistry, University of Helsinki , P.O. Box 55, A.I. Virtasen aukio 1, FIN-00014 Helsinki, Finland
| | - Lauri Halonen
- Laboratory of Physical Chemistry, Department of Chemistry, University of Helsinki , P.O. Box 55, A.I. Virtasen aukio 1, FIN-00014 Helsinki, Finland
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13
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Hansen AS, Mackeprang K, Broman SL, Hansen MH, Gertsen AS, Kildgaard JV, Nielsen OF, Mikkelsen KV, Nielsen MB, Kjaergaard HG. Characterisation of dihydroazulene and vinylheptafulvene derivatives using Raman spectroscopy: The CN-stretching region. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 161:70-76. [PMID: 26956529 DOI: 10.1016/j.saa.2016.02.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 02/12/2016] [Accepted: 02/22/2016] [Indexed: 06/05/2023]
Abstract
The effect of adding electron donating and withdrawing groups on the dihydroazulene (DHA)/vinylheptafulvene (VHF) photochromic system has been investigated using Raman spectroscopy in CS2 solutions. The photoswitching between DHA and VHF is often characterised with UV-Vis spectroscopy. However, Raman spectroscopy can also be used for this purpose and give structural insight, as the light induced ring-opening from DHA to VHF causes changes in the CN-stretching frequencies. The CN-stretching frequencies in DHA and VHF are isolated and optimal for the identification of DHA and VHF. The DHA system is also investigated in the solid state.
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Affiliation(s)
- Anne S Hansen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Kasper Mackeprang
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Søren L Broman
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Mia Harring Hansen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Anders S Gertsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Jens V Kildgaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Ole Faurskov Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Kurt V Mikkelsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Mogens Brøndsted Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Henrik G Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark.
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14
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Hansen AS, Maroun Z, Mackeprang K, Frandsen BN, Kjaergaard HG. Accurate thermodynamic properties of gas phase hydrogen bonded complexes. Phys Chem Chem Phys 2016; 18:23831-9. [DOI: 10.1039/c6cp04648g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The increase in temperature causes a decrease in equilibrium constant, which makes accurate determination of the enthalpy of complex formation possible.
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Affiliation(s)
- Anne S. Hansen
- Department of Chemistry
- University of Copenhagen
- DK-2100 Copenhagen Ø
- Denmark
| | - Zeina Maroun
- Department of Chemistry
- University of Copenhagen
- DK-2100 Copenhagen Ø
- Denmark
| | - Kasper Mackeprang
- Department of Chemistry
- University of Copenhagen
- DK-2100 Copenhagen Ø
- Denmark
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15
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Rapf RJ, Vaida V. Sunlight as an energetic driver in the synthesis of molecules necessary for life. Phys Chem Chem Phys 2016; 18:20067-84. [DOI: 10.1039/c6cp00980h] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This review considers how photochemistry and sunlight-driven reactions can abiotically generate prebiotic molecules necessary for the evolution of life.
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Affiliation(s)
- Rebecca J. Rapf
- Department of Chemistry and Biochemistry
- CIRES
- University of Colorado at Boulder
- Boulder
- USA
| | - Veronica Vaida
- Department of Chemistry and Biochemistry
- CIRES
- University of Colorado at Boulder
- Boulder
- USA
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16
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Møller KH, Hansen AS, Kjaergaard HG. Gas Phase Detection of the NH-P Hydrogen Bond and Importance of Secondary Interactions. J Phys Chem A 2015; 119:10988-98. [PMID: 26451467 DOI: 10.1021/acs.jpca.5b08358] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have observed the NH···P hydrogen bond in a gas phase complex. The bond is identified in the dimethylamine-trimethylphosphine complex by a red shift of the fundamental NH-stretching frequency observed using Fourier transform infrared spectroscopy (FT-IR). On the basis of the measured NH-stretching frequency red shifts, we find that P is a hydrogen bond acceptor atom similar in strength to S. Both are stronger acceptors than O and significantly weaker acceptors than N. The hydrogen bond angle, ∠NHP, is found to be very sensitive to the functional employed in density functional theory (DFT) optimizations of the complex and is a possible parameter to assess the quality of DFT functionals. Natural bonding orbital (NBO) energies and results from the topological methods atoms in molecules (AIM) and noncovalent interactions (NCI) indicate that the sensitivity is caused by the weakness of the hydrogen bond compared to secondary interactions. We find that B3LYP favors the hydrogen bond and M06-2X favors the secondary interactions leading to under- and overestimation, respectively, of the hydrogen bond angle relative to a DF-LCCSD(T)-F12a calculated angle. The remaining functionals tested, B3LYP-D3, B3LYP-D3BJ, CAM-B3LYP, and ωB97X-D, as well as MP2, show comparable contributions from the hydrogen bond and the secondary interactions and are close to DF-LCCSD(T)-F12a results.
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Affiliation(s)
- Kristian H Møller
- Department of Chemistry, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Anne S Hansen
- Department of Chemistry, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Henrik G Kjaergaard
- Department of Chemistry, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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17
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Schrøder SD, Wallberg JH, Kroll JA, Maroun Z, Vaida V, Kjaergaard HG. Intramolecular Hydrogen Bonding in Methyl Lactate. J Phys Chem A 2015; 119:9692-702. [DOI: 10.1021/acs.jpca.5b04812] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sidsel D. Schrøder
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Jens H. Wallberg
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Jay A. Kroll
- Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
- Cooperative Institute for Research in Environmental Sciences, Boulder, Colorado 80309, United States
| | - Zeina Maroun
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Veronica Vaida
- Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
- Cooperative Institute for Research in Environmental Sciences, Boulder, Colorado 80309, United States
| | - Henrik G. Kjaergaard
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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18
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Hansen AS, Du L, Kjaergaard HG. Positively Charged Phosphorus as a Hydrogen Bond Acceptor. J Phys Chem Lett 2014; 5:4225-4231. [PMID: 26278958 DOI: 10.1021/jz502150d] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Phosphorus (P) is an element that is essential to the life of all organisms, and the atmospheric detection of phosphine suggests the existence of a volatile biogeochemical P cycle. Here, we investigate the ability of P to participate in the formation of OH···P hydrogen bonds. Three bimolecular alcohol-trimethylphosphine complexes have been detected. Initially, the complexes were detected using matrix isolation spectroscopy, which favors complex formation. Subsequently, the fundamental OH-stretching vibration was observed in room-temperature gas-phase spectra. On the basis of our measured OH-stretching frequency red shifts and quantum chemical calculations, we find that P is an acceptor atom similar in strength to O and S and that all three P, O, and S atoms are weaker acceptors than N. The quantum chemical calculations show that both H and P in the OH···P hydrogen bond have partial positive charges, as expected from their electronegativities. However, the electrostatic potentials show a negative potential area on the electron density surface around P that facilitates formation of hydrogen bonds.
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Affiliation(s)
- Anne S Hansen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Lin Du
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Henrik G Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
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19
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Andersen CL, Jensen CS, Mackeprang K, Du L, Jørgensen S, Kjaergaard HG. Similar Strength of the NH···O and NH···S Hydrogen Bonds in Binary Complexes. J Phys Chem A 2014; 118:11074-82. [DOI: 10.1021/jp5086679] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Cecilie L. Andersen
- Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - Christine S. Jensen
- Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - Kasper Mackeprang
- Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - Lin Du
- Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - Solvejg Jørgensen
- Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
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20
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Morita M, Takahashi H, Yabushita S, Takahashi K. Why does the IR spectrum of hydroxide stretching vibration weaken with increase in hydration? Phys Chem Chem Phys 2014; 16:23143-9. [DOI: 10.1039/c4cp03623a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Mackeprang K, Kjaergaard HG, Salmi T, Hänninen V, Halonen L. The effect of large amplitude motions on the transition frequency redshift in hydrogen bonded complexes: A physical picture. J Chem Phys 2014; 140:184309. [DOI: 10.1063/1.4873420] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Bork N, Du L, Kjaergaard HG. Identification and Characterization of the HCl–DMS Gas Phase Molecular Complex via Infrared Spectroscopy and Electronic Structure Calculations. J Phys Chem A 2014; 118:1384-9. [DOI: 10.1021/jp411567x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicolai Bork
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
- Department
of Physics, University of Helsinki, FI-00014 Helsinki, Finland
| | - Lin Du
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Henrik G. Kjaergaard
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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23
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Miller RJD. Mapping atomic motions with ultrabright electrons: the chemists' gedanken experiment enters the lab frame. Annu Rev Phys Chem 2014; 65:583-604. [PMID: 24423377 DOI: 10.1146/annurev-physchem-040412-110117] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This review documents the development of high-bunch charge electron pulses with sufficient combined spatiotemporal resolution and intensity to literally light up atomic motions. This development holds promise in coming to a first-principles understanding of diverse problems, ranging from molecular reaction dynamics and structure-function correlations in biology to cooperativity in strongly correlated electron-lattice systems. It is now possible to directly observe the key modes involved in propagating structural changes and the enormous reduction in dimensionality that occurs in barrier crossing regions, which is central to chemistry and makes reaction mechanisms transferrable concepts. This information will help direct theoretical advances that will undoubtedly lead to generalized principles with respect to scaling relations in structural dynamics that will bridge chemistry to biology. In this quest, the limitations and future directions for further development are discussed to give an overview of the present status of the field.
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Affiliation(s)
- R J Dwayne Miller
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg 22761, Germany, and Departments of Chemistry and Physics, University of Toronto, Toronto, Ontario M5S 3H6, Canada;
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24
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Hansen AS, Du L, Kjaergaard HG. The effect of fluorine substitution in alcohol–amine complexes. Phys Chem Chem Phys 2014; 16:22882-91. [DOI: 10.1039/c4cp02500h] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of fluorine substitution on the hydrogen bond strength in alcohol–amine molecular complexes was investigated, with a combination of vapour phase infrared and near infrared spectroscopy and theoretical calculations.
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Affiliation(s)
- Anne S. Hansen
- Department of Chemistry
- University of Copenhagen
- Universitetsparken 5
- DK-2100 Copenhagen, Denmark
| | - Lin Du
- Department of Chemistry
- University of Copenhagen
- Universitetsparken 5
- DK-2100 Copenhagen, Denmark
| | - Henrik G. Kjaergaard
- Department of Chemistry
- University of Copenhagen
- Universitetsparken 5
- DK-2100 Copenhagen, Denmark
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25
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Vaida V, Donaldson DJ. Red-light initiated atmospheric reactions of vibrationally excited molecules. Phys Chem Chem Phys 2014; 16:827-36. [DOI: 10.1039/c3cp53543f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Partanen L, Pesonen J, Sjöholm E, Halonen L. A rotamer energy level study of sulfuric acid. J Chem Phys 2013; 139:144311. [DOI: 10.1063/1.4823836] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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27
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Thomsen DL, Axson JL, Schrøder SD, Lane JR, Vaida V, Kjaergaard HG. Intramolecular Interactions in 2-Aminoethanol and 3-Aminopropanol. J Phys Chem A 2013; 117:10260-73. [DOI: 10.1021/jp405512y] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ditte L. Thomsen
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Jessica L. Axson
- Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
- Cooperative Institute for Research in Environmental Sciences, Boulder, Colorado 80309, United States
| | - Sidsel D. Schrøder
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Joseph R. Lane
- Department
of Chemistry, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
| | - Veronica Vaida
- Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
- Cooperative Institute for Research in Environmental Sciences, Boulder, Colorado 80309, United States
| | - Henrik G. Kjaergaard
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
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28
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Jørgensen S, Jensen C, Kjaergaard HG, Anglada JM. The gas-phase reaction of methane sulfonic acid with the hydroxyl radical without and with water vapor. Phys Chem Chem Phys 2013; 15:5140-50. [PMID: 23450164 DOI: 10.1039/c3cp44034f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The gas phase reaction between methane sulfonic acid (CH3SO3H; MSA) and the hydroxyl radical (HO), without and with a water molecule, was investigated with DFT-B3LYP and CCSD(T)-F12 methods. For the bare reaction we have found two reaction mechanisms, involving proton coupled electron transfer and hydrogen atom transfer processes that produce CH3SO3 and H2O. We also found a third reaction mechanism involving the double proton transfer process, where the products and reactants are identical. The computed rate constant for the oxidation process is 8.3 × 10(-15) cm(3) s(-1) molecule(-1). CH3SO3H forms two very stable complexes with water with computed binding energies of about 10 kcal mol(-1). The presence of a single water molecule makes the reaction between CH3SO3H and HO much more complex, introducing a new reaction that consists in the interchange of H2O between HO and CH3SO3H. Our kinetic calculations show that 99.5% of the reaction involves this interchange of the water molecule and, consequently, water vapor does not play any role in the oxidation reaction of methane sulfonic acid by the hydroxyl radical.
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Affiliation(s)
- Solvejg Jørgensen
- Department of Chemistry, University of Copenhagen, Copenhagen O, Denmark.
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29
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Mackeprang K, Schrøder SD, Kjaergaard HG. Weak intramolecular OH⋯π hydrogen bonding in methallyl- and allyl-carbinol. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.07.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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30
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Portnov A, Epshtein M, Rosenwaks S, Bar I. Vibrational overtone spectroscopy and intramolecular dynamics of C–H stretches in pyrrole. J Chem Phys 2013; 138:194310. [DOI: 10.1063/1.4804540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Du L, Mackeprang K, Kjaergaard HG. Fundamental and overtone vibrational spectroscopy, enthalpy of hydrogen bond formation and equilibrium constant determination of the methanol-dimethylamine complex. Phys Chem Chem Phys 2013; 15:10194-206. [PMID: 23695525 DOI: 10.1039/c3cp50243k] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have measured gas phase vibrational spectra of the bimolecular complex formed between methanol (MeOH) and dimethylamine (DMA) up to about 9800 cm(-1). In addition to the strong fundamental OH-stretching transition we have also detected the weak second overtone NH-stretching transition. The spectra of the complex are obtained by spectral subtraction of the monomer spectra from spectra recorded for the mixture. For comparison, we also measured the fundamental OH-stretching transition in the bimolecular complex between MeOH and trimethylamine (TMA). The enthalpies of hydrogen bond formation (ΔH) for the MeOH-DMA and MeOH-TMA complexes have been determined by measurements of the fundamental OH-stretching transition in the temperature range from 298 to 358 K. The enthalpy of formation is found to be -35.8 ± 3.9 and -38.2 ± 3.3 kJ mol(-1) for MeOH-DMA and MeOH-TMA, respectively, in the 298 to 358 K region. The equilibrium constant (Kp) for the formation of the MeOH-DMA complex has been determined from the measured and calculated transition intensities of the OH-stretching fundamental transition and the NH-stretching second overtone transition. The transition intensities were calculated using an anharmonic oscillator local mode model with dipole moment and potential energy curves calculated using explicitly correlated coupled cluster methods. The equilibrium constant for formation of the MeOH-DMA complex was determined to be 0.2 ± 0.1 atm(-1), corresponding to a ΔG value of about 4.0 kJ mol(-1).
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Affiliation(s)
- Lin Du
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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32
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Olbert-Majkut A, Ahokas J, Pettersson M, Lundell J. Visible Light-Driven Chemistry of Oxalic Acid in Solid Argon, Probed by Raman Spectroscopy. J Phys Chem A 2013; 117:1492-502. [DOI: 10.1021/jp311749z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adriana Olbert-Majkut
- Faculty of Chemistry, Wrocław University, F. Joliot-Curie 14, 50-383
Wrocław, Poland
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33
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Li D, Yang F, Han C, Zhao J, Wang J. Correlated High-Frequency Molecular Motions in Neat Liquid Probed with Ultrafast Overtone Two-Dimensional Infrared Spectroscopy. J Phys Chem Lett 2012; 3:3665-3670. [PMID: 26291004 DOI: 10.1021/jz301652v] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work, an overtone two-dimensional infrared (2D IR) method is shown to allow correlated molecular motions at the frequencies of overtone transitions to be studied. Waiting-time-dependent overtone 2D IR results of the C-O stretching in neat liquid methanol reveal that the autocorrelation of the v = 0 → 2 transition and the cross correlation of the v = 0 → 2/v = 2 → 4 transitions differ considerably (relaxation time being 700 fs and 2 ps, respectively), suggesting different spectral diffusion dynamics. Quantum-chemical computations in combination with ab initio molecular dynamics simulations show that the overtone transition frequency of the C-O stretching mode in liquid methanol is of more structural sensitivity than the fundamental frequency. This work demonstrates a new 2D IR approach to examining the structural sensitivities of the anharmonic potential parameters of higher vibrational states, which can be used to gain new insight into the ultrafast structural dynamics particularly for neat liquids.
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Affiliation(s)
- Donghai Li
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Fan Yang
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Chen Han
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Juan Zhao
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jianping Wang
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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34
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Medvedev ES. Towards understanding the nature of the intensities of overtone vibrational transitions. J Chem Phys 2012; 137:174307. [DOI: 10.1063/1.4761930] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Du L, Lane JR, Kjaergaard HG. Identification of the dimethylamine-trimethylamine complex in the gas phase. J Chem Phys 2012; 136:184305. [PMID: 22583285 DOI: 10.1063/1.4707707] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We have identified the dimethylamine-trimethylamine complex (DMA-TMA) at room temperature in the gas phase. The Fourier transform infrared (FTIR) spectrum of DMA-TMA in the NH-stretching fundamental region was obtained by spectral subtraction of spectra of each monomer. Explicitly correlated coupled cluster calculations were used to determine the minimum energy structure and interaction energy of DMA-TMA. Frequencies and intensities of NH-stretching transitions were also calculated at this level of theory with an anharmonic oscillator local mode model. The fundamental NH-stretching intensity in DMA-TMA is calculated to be approximately 700 times larger than that of the DMA monomer. The measured and calculated intensity is used to determine a room temperature equilibrium constant of DMA-TMA of 1.7 × 10(-3) atm(-1) at 298 K.
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Affiliation(s)
- Lin Du
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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36
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Futami Y, Morisawa Y, Ozaki Y, Hamada Y, Wojcik MJ, Ozaki Y. The dielectric constant dependence of absorption intensities and wavenumbers of the fundamental and overtone transitions of stretching vibration of the hydrogen fluoride studied by quantum chemistry calculations. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.01.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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37
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Miller BJ, Du L, Steel TJ, Paul AJ, Södergren AH, Lane JR, Henry BR, Kjaergaard HG. Absolute Intensities of NH-Stretching Transitions in Dimethylamine and Pyrrole. J Phys Chem A 2011; 116:290-6. [DOI: 10.1021/jp209118p] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benjamin J. Miller
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - Lin Du
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Thomas J. Steel
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - Allanah J. Paul
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - A. Helena Södergren
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - Joseph R. Lane
- Department of Chemistry, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
| | - Bryan R. Henry
- Department of Chemistry, University of Guelph, N1G 2W1, Guelph, Ontario, Canada
| | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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38
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Chen HY, Cheng YL, Takahashi K. Theoretical calculation of the OH vibrational overtone spectra of 1,5-pentanediol and 1,6-hexanediol. J Phys Chem A 2011; 115:14315-24. [PMID: 22066681 DOI: 10.1021/jp206202u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
It is well-known that intramolecular hydrogen bonding affects the relative energetics of conformers, as well as the OH stretching peak positions, intensities, and width. In this study we simulated the Δv(OH) = 3, 4 overtone spectra of 1,5-pentanediol (PeD) and 1,6-hexanediol (HD) using the peak positions, intensities, and width calculated from the B3LYP/6-31+G(d,p) method. Furthermore, room temperature free energy calculations were performed using B3LYP/6-31+G(d,p) MP2/6-31+G(d,p), and MP2/6-311++G(3df,3pd) to obtain the relative population of the conformers. From the calculation of 109 and 381 distinct conformers for PeD and HD, respectively, we find that for these long chain diols the intramolecular hydrogen bonded conformers are not the most dominant conformation at room temperature. This is in stark contrast with shorter chain diols such as ethylene glycol for which the hydrogen bonded conformer dominates the population at room temperature. On the other hand, we found that the correlation between the hydrogen bonded OH red shift versus the homogeneous width, Γ = 0.0155(Δω)(1.36), which was derived for shorter chain diols, is valid even for these longer chain diols. We also showed that the intramolecular hydrogen bonded OH initially decays through the CCOH torsion and COH bending mode no matter how long the alkanediol chain length is for 1,n-alkanediols for n up to 6.
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Affiliation(s)
- Hui-Yi Chen
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan, ROC
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39
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Du L, Kjaergaard HG. Fourier transform infrared spectroscopy and theoretical study of dimethylamine dimer in the gas phase. J Phys Chem A 2011; 115:12097-104. [PMID: 21950960 DOI: 10.1021/jp206762j] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dimethylamine (DMA) has been studied by gas-phase Fourier transform infrared (FTIR) spectroscopy. We have identified a spectral transition that is assigned to the DMA dimer. The IR spectra of the dimer in the gas phase are obtained by spectral subtraction of spectra recorded at different pressures. The enthalpy of hydrogen bond formation was obtained for the DMA dimer by temperature-dependence measurements. We complement the experimental results with ab initio and anharmonic local mode model calculations of monomer and dimer. Compared to the monomer, our calculations show that in the dimer the N-H bond is elongated, and the NH-stretching fundamental shifts to a lower wavenumber. More importantly, the weak NH-stretching fundamental transition has a pronounced intensity increase upon complexation. However, the first NH-stretching overtone transition is not favored by the same intensity enhancement, and we do not observe the first NH-stretching overtone of the dimer. On the basis of the measured and calculated intensity of the NH-stretching transition of the dimer, the equilibrium constant for dimerization at room temperature was determined.
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Affiliation(s)
- Lin Du
- Department of Chemistry, University of Copenhagen, Copenhagen Ø, Denmark
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40
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Miller BJ, Lane JR, Kjaergaard HG. Intramolecular OH···π interactions in alkenols and alkynols. Phys Chem Chem Phys 2011; 13:14183-93. [PMID: 21743897 DOI: 10.1039/c1cp21190k] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The vibrational overtone spectra of propargyl alcohol (prop-2-yn-1-ol, PA), allyl alcohol (prop-2-en-1-ol, AA), propargyl carbinol (but-3-yn-1-ol, PC) and allyl carbinol (but-3-en-1-ol, AC) were recorded with intracavity laser photoacoustic spectroscopy (ICL-PAS) in the Δv(OH) = 3, 4 and 5 regions for propargyl alcohol and allyl alcohol and in the Δv(OH) = 4 and 5 regions for propargyl carbinol and allyl carbinol. Local mode anharmonic oscillator calculations were performed with explicitly correlated coupled cluster methods to guide spectral assignment. Atoms in molecules (AIM) and non-covalent interactions (NCI) calculations were carried out to analyze the interactions between the OH-group and the π-electrons of the carbon-carbon multiple bonds. We ascertain the effect of the carbon chain length and saturation on the conformation and spectroscopy of the four alcohols in relation to intramolecular hydrogen bonding interactions.
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Affiliation(s)
- Benjamin J Miller
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
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41
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Cheng YL, Chen HY, Takahashi K. Theoretical Calculation of the OH Vibrational Overtone Spectra of 1-n Alkane Diols (n = 2–4): Origin of Disappearing Hydrogen-Bonded OH Peak. J Phys Chem A 2011; 115:5641-53. [DOI: 10.1021/jp202030c] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu-Lung Cheng
- Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 10617, Taiwan R.O.C
| | - Hui-Yi Chen
- Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 10617, Taiwan R.O.C
| | - Kaito Takahashi
- Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 10617, Taiwan R.O.C
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42
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Gambi A, Della Valle RG. Local mode and normal mode models for molecules with two non-equivalent C–H bonds. Mol Phys 2010. [DOI: 10.1080/00268970701408297] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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43
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Miller BJ, Yekutiel M, Sodergren AH, Howard DL, Dunn ME, Vaida V, Kjaergaard HG. Overtone Spectra of 2-Mercaptoethanol and 1,2-Ethanedithiol. J Phys Chem A 2010; 114:12692-700. [DOI: 10.1021/jp9112798] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | | | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø, Denmark
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44
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Gupta P, Lane JR, Kjaergaard HG. Molecular dynamic simulations of OH-stretching overtone induced photodissociation of fluorosulfonic and chlorosulfonic acid. Phys Chem Chem Phys 2010; 12:8277-84. [PMID: 20526505 DOI: 10.1039/c003073m] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate the OH-stretching overtone dynamics of fluorosulfonic acid (FSO(3)H) and chlorosulfonic acid (ClSO(3)H) using classical trajectory simulations. The initial nuclear coordinates and momenta for the trajectories are sampled from anharmonic correlation-corrected vibrational self consistent field (CC-VSCF) wavefunctions. We consider both OH-stretching overtone states and combination states containing a mix of OH-stretching overtones and SOH-bending or OSOH-torsional modes. Our molecular dynamics simulations confirm that photodissociation of these sulfonic acids to form the corresponding hydrogen halides and sulfur trioxide (HF + SO(3) and HCl + SO(3)), is possible via highly vibrationally excited states on a picosecond timescale. Hydrogen-hopping events are also observed in the trajectories whereby the hydrogen atom of the excited OH group is found to migrate to one of the adjacent S=O groups. The transition states, activation energies and dissociation dynamics of FSO(3)H and ClSO(3)H are found to be similar to those of H(2)SO(4). We suggest that these halogenated sulfonic acids should be suitable proxy molecules for an experimental investigation of the OH-stretching overtone induced photodissociation of H(2)SO(4) thought to be important in Earths' atmosphere.
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Affiliation(s)
- Priyanka Gupta
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
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45
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Yekutiel M, Lane JR, Gupta P, Kjaergaard HG. Calculated Spectroscopy and Atmospheric Photodissociation of Phosphoric Acid. J Phys Chem A 2010; 114:7544-52. [DOI: 10.1021/jp1007957] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mivsam Yekutiel
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
| | - Joseph R. Lane
- Department of Chemistry, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
| | - Priyanka Gupta
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
| | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø
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46
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Lane JR, Kjaergaard HG. XH-stretching overtone transitions calculated using explicitly correlated coupled cluster methods. J Chem Phys 2010; 132:174304. [DOI: 10.1063/1.3408192] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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Takahashi K, Plath KL, Axson JL, Nelson GC, Skodje RT, Vaida V. Dynamics and spectroscopy of vibrational overtone excited glyoxylic acid and 2,2-dihydroxyacetic acid in the gas-phase. J Chem Phys 2010; 132:094305. [DOI: 10.1063/1.3327839] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Takahashi K. Theoretical study on the effect of intramolecular hydrogen bonding on OH stretching overtone decay lifetime of ethylene glycol, 1,3-propanediol, and 1,4-butanediol. Phys Chem Chem Phys 2010; 12:13950-61. [DOI: 10.1039/c0cp00788a] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Plath KL, Takahashi K, Skodje RT, Vaida V. Fundamental and overtone vibrational spectra of gas-phase pyruvic acid. J Phys Chem A 2009; 113:7294-303. [PMID: 19260671 DOI: 10.1021/jp810687t] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pyruvic acid (CH(3)COCOOH) is an important keto acid present in the atmosphere. In this study, the vibrational spectroscopy of gas-phase pyruvic acid has been investigated with special emphasis on the overtone transitions of the OH-stretch, with Delta v(OH) = 2, 4, 5. Assignments were made to fundamental and combination bands in the mid-IR. The two lowest energy rotational conformers of pyruvic acid are clearly observed in the spectrum. The lowest energy conformer possesses an intramolecular hydrogen bond, while the next lowest rotational conformer does not. This difference is clearly seen in the spectra of the OH vibrational overtone transitions, and it is reflected in the anharmonicities of the OH-stretching modes for each conformer. The spectra of the OH-stretching vibration for both conformers were investigated to establish the effect of the hydrogen bond on frequency, intensity, and line width.
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Affiliation(s)
- Kathryn L Plath
- Department of Chemistry and Biochemistry, University of Colorado, Campus Box 215, Boulder, Colorado 80309, USA
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50
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Miller BJ, Howard DL, Lane JR, Kjaergaard HG, Dunn ME, Vaida V. SH-Stretching Vibrational Spectra of Ethanethiol and tert-Butylthiol. J Phys Chem A 2009; 113:7576-83. [DOI: 10.1021/jp9017162] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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