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Jiang N, Melosso M, Alessandrini S, Bizzocchi L, Martin-Drumel MA, Pirali O, Puzzarini C. Insights into the molecular structure and infrared spectrum of the prebiotic species aminoacetonitrile. Phys Chem Chem Phys 2023; 25:4754-4763. [PMID: 36691972 DOI: 10.1039/d2cp05179f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Aminoacetonitrile is an interstellar molecule with a prominent prebiotic role, already detected in the chemically-rich molecular cloud Sagittarius B2(N) and postulated to be present in the atmosphere of the largest Saturn's moon, Titan. To further support its observation in such remote environments and laboratory experiments aimed at improving our understanding of interstellar chemistry, we report a thorough spectroscopic and structural characterization of aminoacetonitrile. Equilibrium geometry, fundamental bands as well as spectroscopic and molecular parameters have been accurately computed by exploiting a composite scheme rooted in the coupled-cluster theory that accounts for the extrapolation to the complete basis set limit and core-correlation effects. In addition, a semi-experimental approach that combines ground-state rotational constants for different isotopic species and calculated vibrational corrections has been employed for the structure determination. From the experimental side, we report the analysis of the three strongest fundamental bands of aminoacetonitrile observed between 500 and 1000 cm-1 in high-resolution infrared spectra. More generally, all computed band positions are in excellent agreement with the present and previous experiments. The only exception is the ν15 band, for which we provide a revision of the experimental assignment, now in good agreement with theory.
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Affiliation(s)
- Ningjing Jiang
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Mattia Melosso
- Scuola Superiore Meridionale, Largo San Marcellino 10, 80138 Naples, Italy.
| | - Silvia Alessandrini
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy. .,Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy
| | - Luca Bizzocchi
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | | | - Olivier Pirali
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405 Orsay, France.,SOLEIL Synchrotron, AILES beamline, l'Orme des Merisiers, 91190 Saint-Aubin, Gif-sur-Yvette, France
| | - Cristina Puzzarini
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
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2
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Ruppert M, Creon A, Tidow H, Huse N. Population Dynamics of Stretching Excitations of p-Azido-phenylalanine Incorporated in Calmodulin-Peptide Complexes. J Phys Chem B 2022; 126:368-375. [PMID: 34990136 DOI: 10.1021/acs.jpcb.1c06775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We genetically incorporated the unnatural amino acid p-azido-phenylalanine (AzF) into the ubiquitous Ca2+ sensor protein calmodulin (CaM) in complex with different peptides to explore the response of the azido stretching line shape to varying binding motifs with femtosecond infrared spectroscopy. The dynamic response of the azido stretching mode varies in different CaM-peptide complexes. We model these dynamics as coherent excitations of Fermi resonances and extract a lifetime of the azido stretching vibration of about 1 ps. The resulting model parameters are commensurate with the linear infrared absorption lineshapes which suggests that the conformation-sensitive vibrational lineshape could be composed of Fermi resonances that differ between the protein-peptide complexes.
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Affiliation(s)
- Matthias Ruppert
- Hamburg Advanced Research Centre for Bioorganic Chemistry, Institute for Nanostructure and Solid-State Physics, Department of Physics, and Center for Free-Electron Laser Science, University of Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany
| | - Anne Creon
- Hamburg Advanced Research Centre for Bioorganic Chemistry, Institute for Nanostructure and Solid-State Physics, Department of Physics, and Center for Free-Electron Laser Science, University of Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany.,Hamburg Advanced Research Centre for Bioorganic Chemistry, Institute for Biochemistry and Molecular Biology, Department of Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, D-20146 Hamburg, Germany
| | - Henning Tidow
- Hamburg Advanced Research Centre for Bioorganic Chemistry, Institute for Biochemistry and Molecular Biology, Department of Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, D-20146 Hamburg, Germany.,The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee, 149, D-22761 Hamburg, Germany
| | - Nils Huse
- Hamburg Advanced Research Centre for Bioorganic Chemistry, Institute for Nanostructure and Solid-State Physics, Department of Physics, and Center for Free-Electron Laser Science, University of Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany.,The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee, 149, D-22761 Hamburg, Germany
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3
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Kharat B, Naganathappa M, Jagrut V, Chaudhari A. Spectroscopy and second hyperpolarizability of odd spin states of acetonitrile: Theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 265:120389. [PMID: 34536897 DOI: 10.1016/j.saa.2021.120389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 08/23/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
The present study reports the spectroscopic characterization and second hyperpolarizability of odd spin states of acetonitrile in gas phase and water solvent. The odd spin states of acetonitrile are singlet, triplet and quintet spin state of acetonitrile have been considered for the study. The spectroscopic characterization viz. energy, geometrical parameters, infrared and electronic absorption spectra, molecular orbitals (MOs) their energies and natural transitions orbitals (NTOs) in gas phase and water solvent state reported at B3LYP/aug-cc-pVDZ level of theory. The second hyperpolarizability values are obtained using various methods and basis sets for comparison. It has been observed that the second hyperpolarizability values for the odd spin states of acetonitrile are more positive than the first hyperpolarizability. It is clearly seen that the effect of spin on spectroscopic parameters except on energy. The singlet gas phase acetonitrile calculations are well matching with the available experimental determinations. The TDDFT approach has been used to study electronic absorption spectra of all spin states of acetonitrile in gas phase and in water solvent. The IEFPCM model implemented in studying acetonitrile in water solvent at B3LYP/aug-cc-pVDZ level of theory. It is observed that HOMO to LUMO gap is larger for singlet than the triplet and quintet spin state and it decrease with an increase in strength of an applied field. All these calculations performed using Gaussian 16 program package.
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Affiliation(s)
- Bhagwat Kharat
- Department of Physics, Swami Vivekanand Senior College, Mantha, Maharashtra, India
| | | | - Vasant Jagrut
- Department of Physics, Swami Vivekanand Senior College, Mantha, Maharashtra, India
| | - Ajay Chaudhari
- Department of Physics, The Institute of Science, Dr. Homi Bhabha State University, Mumbai, 400032, India
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4
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Cantin T, Morgenstern Y, Mingot A, Kornath A, Thibaudeau S. Evidence and exploitation of dicationic ammonium-nitrilium superelectrophiles: direct synthesis of unsaturated piperidinones. Chem Commun (Camb) 2020; 56:11110-11113. [PMID: 32812972 DOI: 10.1039/d0cc02910f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Exploiting superacid activation, the reactivity of aminonitriles was enhanced through the transient formation of highly reactive ammonium-nitrilium superelectrophiles. Demonstrated by using in situ low-temperature NMR experiments and confirmed by X-ray diffraction analysis, these dications can be intramolecularly trapped by non-activated alkenes to generate unsaturated piperidinones, including enantioenriched ones, in a straightforward way.
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Affiliation(s)
- Thomas Cantin
- Université de Poitiers, IC2MP UMR CNRS 7285/Superacid Group - Organic Synthesis Team/4 rue Michel Brunet, 86073 Poitiers cedex 9, France.
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5
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Beć KB, Karczmit D, Kwaśniewicz M, Ozaki Y, Czarnecki MA. Overtones of νC≡N Vibration as a Probe of Structure of Liquid CH3CN, CD3CN, and CCl3CN: Combined Infrared, Near-Infrared, and Raman Spectroscopic Studies with Anharmonic Density Functional Theory Calculations. J Phys Chem A 2019; 123:4431-4442. [DOI: 10.1021/acs.jpca.9b02170] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Krzysztof Bernard Beć
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Daniel Karczmit
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Michał Kwaśniewicz
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Yukihiro Ozaki
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
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6
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Hussain A, Huse N, Vendrell O. Sensitivity of core-level spectroscopy to electrostatic environments of nitrile groups: An ab initio study. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2017; 4:054102. [PMID: 28966931 PMCID: PMC5612798 DOI: 10.1063/1.5003404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 09/05/2017] [Indexed: 05/26/2023]
Abstract
Ab initio quantum chemistry calculations have been performed to probe the influence of hydrogen bonding on the electronic structure of hydrogen cyanide (HCN). Our calculations determine the origin of nitrogen-specific Raman spectral features from resonant inelastic X-ray scattering occurring in the presence of a water molecule and an electric dipole field. The similarity of the two interactions in altering the electronic structure of the nitrogen atom differs only in the covalent contributions from the water molecule. The CN stretching mode as a structural probe was also investigated to study the electronic origin of the anomalous frequency shift of the nitrile group when subjected to hydrogen bonding and an electrostatic dipole field. The major changes in the electronic structure of HCN are electrostatic in nature and originate from dipole-dipole interactions. The relative shifts of the CN stretching frequency are in good agreement with those experimentally observed.
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Affiliation(s)
- Abid Hussain
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science, 22761 Hamburg, Germany
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7
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Pelc A, Huber SE, Matias C, Czupyt Z, Denifl S. Formation of Negative Ions upon Dissociative Electron Attachment to the Astrochemically Relevant Molecule Aminoacetonitrile. J Phys Chem A 2016; 120:903-10. [DOI: 10.1021/acs.jpca.5b09657] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrzej Pelc
- Mass
Spectrometry Laboratory, Institute of Physics, Marie Curie-Sklodowska University, Pl. M. C.-Sklodowskiej 1, 20-031 Lublin, Poland
| | - Stefan E. Huber
- Institut
für Ionenphysik und Angewandte Physik, Leopold Franzens Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - Carolina Matias
- Institut
für Ionenphysik und Angewandte Physik, Leopold Franzens Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - Zbigniew Czupyt
- Ion
Microprobe Facility Micro-Area Analysis Laboratory, Polish Geological Institute—National Research Institute, Rakowiecka 4, 00-975 Warszawa, Poland
| | - Stephan Denifl
- Institut
für Ionenphysik und Angewandte Physik, Leopold Franzens Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
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8
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Acetonitrile–water hydrogen-bonded interaction: Matrix-isolation infrared and ab initio computation. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.03.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Hydrogen-bonded complexes of acetylene and acetonitrile: A matrix isolation infrared and computational study. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.11.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Banno M, Kotani A, Ohta K, Tominaga K. Solute–Solvent Interactions of Benzonitrile in Solutions Studied by Sub-Picosecond Infrared Pump–Probe Spectroscopy. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20130226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Ayumi Kotani
- Department of Chemistry, Graduate School of Science, Kobe University
| | - Kaoru Ohta
- Molecular Photoscience Research Center, Kobe University
| | - Keisuke Tominaga
- Molecular Photoscience Research Center, Kobe University
- Department of Chemistry, Graduate School of Science, Kobe University
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11
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Roy TK, Gerber RB. Vibrational self-consistent field calculations for spectroscopy of biological molecules: new algorithmic developments and applications. Phys Chem Chem Phys 2013; 15:9468-92. [DOI: 10.1039/c3cp50739d] [Citation(s) in RCA: 141] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Li H, Guan H, Duan X, Hu J, Wang G, Wang Q. An acid catalyzed reversible ring-opening/ring-closure reaction involving a cyano-rhodamine spirolactam. Org Biomol Chem 2013; 11:1805-9. [DOI: 10.1039/c3ob27356c] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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13
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Rhinehart JM, Challa JR, McCamant DW. Multimode Charge-Transfer Dynamics of 4-(Dimethylamino)benzonitrile Probed with Ultraviolet Femtosecond Stimulated Raman Spectroscopy. J Phys Chem B 2012; 116:10522-34. [DOI: 10.1021/jp3020645] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Justin M. Rhinehart
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
| | - J. Reddy Challa
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
| | - David W. McCamant
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
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14
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Han C, Wang J. Influence of an Unnatural Amino Acid Side Chain on the Conformational Dynamics of Peptides. Chemphyschem 2012; 13:1522-34. [DOI: 10.1002/cphc.201100995] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Indexed: 11/09/2022]
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15
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Xu L, Cohen AE, Boxer SG. Electrostatic fields near the active site of human aldose reductase: 2. New inhibitors and complications caused by hydrogen bonds. Biochemistry 2011; 50:8311-22. [PMID: 21859105 DOI: 10.1021/bi200930f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vibrational Stark effect spectroscopy was used to measure electrostatic fields in the hydrophobic region of the active site of human aldose reductase (hALR2). A new nitrile-containing inhibitor was designed and synthesized, and the X-ray structure of its complex, along with cofactor NADP(+), with wild-type hALR2 was determined at 1.3 Å resolution. The nitrile is found to be in the proximity of T113, consistent with a hydrogen bond interaction. Two vibrational absorption peaks were observed at room temperature in the nitrile region when the inhibitor binds to wild-type hALR2, indicating that the nitrile probe experiences two different microenvironments, and these could be empirically separated into a hydrogen-bonded and non-hydrogen-bonded population by comparison with the T113A mutant, in which a hydrogen bond to the nitrile is not present. Classical molecular dynamics simulations based on the structure predict a double-peak distribution in protein electric fields projected along the nitrile probe. The interpretation of these two peaks as a hydrogen bond formation-dissociation process between the probe nitrile group and a nearby amino acid side chain is used to explain the observation of two IR bands, and the simulations were used to investigate the molecular details of this conformational change. Hydrogen bonding complicates the simplest analysis of vibrational frequency shifts as being due solely to electrostatic interactions through the vibrational Stark effect, and the consequences of this complication are discussed.
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Affiliation(s)
- Lin Xu
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
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16
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Choi JH, Oh KI, Cho M. Azido-derivatized compounds as IR probes of local electrostatic environment: Theoretical studies. J Chem Phys 2008; 129:174512. [DOI: 10.1063/1.3001915] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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17
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Oh KI, Lee JH, Joo C, Han H, Cho M. β-Azidoalanine as an IR Probe: Application to Amyloid Aβ(16-22) Aggregation. J Phys Chem B 2008; 112:10352-7. [DOI: 10.1021/jp801558k] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Kwang-Im Oh
- Department of Chemistry and Center for Multidimensional Spectroscopy, Korea University, Seoul 136-701, Korea, and Multidimensional Spectroscopy Laboratory, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Joo-Hyun Lee
- Department of Chemistry and Center for Multidimensional Spectroscopy, Korea University, Seoul 136-701, Korea, and Multidimensional Spectroscopy Laboratory, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Cheonik Joo
- Department of Chemistry and Center for Multidimensional Spectroscopy, Korea University, Seoul 136-701, Korea, and Multidimensional Spectroscopy Laboratory, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Hogyu Han
- Department of Chemistry and Center for Multidimensional Spectroscopy, Korea University, Seoul 136-701, Korea, and Multidimensional Spectroscopy Laboratory, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Minhaeng Cho
- Department of Chemistry and Center for Multidimensional Spectroscopy, Korea University, Seoul 136-701, Korea, and Multidimensional Spectroscopy Laboratory, Korea Basic Science Institute, Seoul 136-713, Korea
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18
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Oh KI, Choi JH, Lee JH, Han JB, Lee H, Cho M. Nitrile and thiocyanate IR probes: Molecular dynamics simulation studies. J Chem Phys 2008; 128:154504. [DOI: 10.1063/1.2904558] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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19
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Kjaergaard HG, Garden AL, Chaban GM, Gerber RB, Matthews DA, Stanton JF. Calculation of Vibrational Transition Frequencies and Intensities in Water Dimer: Comparison of Different Vibrational Approaches. J Phys Chem A 2008; 112:4324-35. [DOI: 10.1021/jp710066f] [Citation(s) in RCA: 152] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
| | | | - Galina M. Chaban
- NASA Ames Research Center, Mail Stop T27B-1, Moffett Field, California 94035-1000
| | - R. Benny Gerber
- Department of Chemistry, University of California, Irvine, California 92697 and Department of Physical Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 91904, Israel
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20
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Choi JH, Oh KI, Lee H, Lee C, Cho M. Nitrile and thiocyanate IR probes: Quantum chemistry calculation studies and multivariate least-square fitting analysis. J Chem Phys 2008; 128:134506. [DOI: 10.1063/1.2844787] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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21
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Niaura G, Kuprionis Z, Ignatjev I, Kažemėkaitė M, Valincius G, Talaikytė Z, Razumas V, Svendsen A. Probing of Lipase Activity at Air/Water Interface by Sum-Frequency Generation Spectroscopy. J Phys Chem B 2008; 112:4094-101. [DOI: 10.1021/jp075950m] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Gediminas Niaura
- Institute of Biochemistry, Mokslininku̧ 12, LT-08662 Vilnius, Lithuania, EKSPLA Ltd., Savanoriu̧ Av. 231, LT-02300 Vilnius, Lithuania, and Novozymes A/S, Smørmosevej 25, DK-2880 Bagsvaerd, Denmark
| | - Zenonas Kuprionis
- Institute of Biochemistry, Mokslininku̧ 12, LT-08662 Vilnius, Lithuania, EKSPLA Ltd., Savanoriu̧ Av. 231, LT-02300 Vilnius, Lithuania, and Novozymes A/S, Smørmosevej 25, DK-2880 Bagsvaerd, Denmark
| | - Ilja Ignatjev
- Institute of Biochemistry, Mokslininku̧ 12, LT-08662 Vilnius, Lithuania, EKSPLA Ltd., Savanoriu̧ Av. 231, LT-02300 Vilnius, Lithuania, and Novozymes A/S, Smørmosevej 25, DK-2880 Bagsvaerd, Denmark
| | - Marytė Kažemėkaitė
- Institute of Biochemistry, Mokslininku̧ 12, LT-08662 Vilnius, Lithuania, EKSPLA Ltd., Savanoriu̧ Av. 231, LT-02300 Vilnius, Lithuania, and Novozymes A/S, Smørmosevej 25, DK-2880 Bagsvaerd, Denmark
| | - Gintaras Valincius
- Institute of Biochemistry, Mokslininku̧ 12, LT-08662 Vilnius, Lithuania, EKSPLA Ltd., Savanoriu̧ Av. 231, LT-02300 Vilnius, Lithuania, and Novozymes A/S, Smørmosevej 25, DK-2880 Bagsvaerd, Denmark
| | - Zita Talaikytė
- Institute of Biochemistry, Mokslininku̧ 12, LT-08662 Vilnius, Lithuania, EKSPLA Ltd., Savanoriu̧ Av. 231, LT-02300 Vilnius, Lithuania, and Novozymes A/S, Smørmosevej 25, DK-2880 Bagsvaerd, Denmark
| | - Valdemaras Razumas
- Institute of Biochemistry, Mokslininku̧ 12, LT-08662 Vilnius, Lithuania, EKSPLA Ltd., Savanoriu̧ Av. 231, LT-02300 Vilnius, Lithuania, and Novozymes A/S, Smørmosevej 25, DK-2880 Bagsvaerd, Denmark
| | - Allan Svendsen
- Institute of Biochemistry, Mokslininku̧ 12, LT-08662 Vilnius, Lithuania, EKSPLA Ltd., Savanoriu̧ Av. 231, LT-02300 Vilnius, Lithuania, and Novozymes A/S, Smørmosevej 25, DK-2880 Bagsvaerd, Denmark
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22
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Lamsabhi AM, Mó O, Yáñez M, Guillemin JC, Haldys V, Tortajada J, Salpin JY. Ni(+) reactions with aminoacetonitrile, a potential prebiological precursor of glycine. JOURNAL OF MASS SPECTROMETRY : JMS 2008; 43:317-326. [PMID: 18064577 DOI: 10.1002/jms.1313] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The gas-phase reactions between Ni(+) ((2)D(5/2)) and aminoacetonitrile, a molecule of prebiological interest as possible precursor of glycine, have been investigated by means of mass spectrometry techniques. The mass-analyzed ion kinetic energy (MIKE) spectrum reveals that the adduct ions [NC--CH(2)--NH(2), Ni(+)] spontaneously decompose by loosing HCN, H(2), and H(2)CNH, the loss of hydrogen cyanide being clearly dominant. The structures and bonding characteristics of the aminoacetonitrile-Ni(+) complexes as well as the different stationary points of the corresponding potential energy surface (PES) have been theoretically studied by density functional theory (DFT) calculations carried out at B3LYP/6-311G(d,p) level. A cyclic intermediate, in which Ni(+) is bisligated to the cyano and the amino group, plays an important role in the unimolecular reactivity of these ions, because it is the precursor for the observed losses of HCN and H(2)CNH. In all mechanisms associated with the loss of H(2), the metal acts as hydrogen carrier favoring the formation of the H(2) molecule. The estimated bond dissociation energy of aminoacetonitrile-Ni(+) complexes (291 kJ mol(-1)) is larger than those measured for other nitrogen bases such as pyridine or pyrimidine and only slightly smaller than that of adenine.
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Affiliation(s)
- Al Mokhtar Lamsabhi
- Departamento de Química C-9, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain
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23
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Yagi K, Hirata S, Hirao K. Efficient configuration selection scheme for vibrational second-order perturbation theory. J Chem Phys 2007; 127:034111. [PMID: 17655435 DOI: 10.1063/1.2748774] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A fast algorithm of vibrational second-order Moller-Plesset perturbation theory is proposed, enabling a substantial reduction in the number of vibrational self-consistent-field (VSCF) configurations that need to be summed in the calculations. Important configurations are identified a priori by assuming that a reference VSCF wave function is approximated well by harmonic oscillator wave functions and that fifth- and higher-order anharmonicities are negligible. The proposed scheme has reduced the number of VSCF configurations by more than 100 times for formaldehyde, ethylene, and furazan with an error in computed frequencies being not more than a few cm(-1).
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Affiliation(s)
- Kiyoshi Yagi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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Alía JM, Edwards HGM. Vibrational spectroscopic properties of hydrogen bonded acetonitrile studied by DFT. J Phys Chem A 2007; 109:7977-87. [PMID: 16834180 DOI: 10.1021/jp051892y] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vibrational properties (band position, Infrared and Raman intensities) of the acetonitrile C[triple bond]N stretching mode were studied in 27 gas-phase medium intensity (length range: = 1.71-2.05 angstroms; -deltaE range = 13-48 kJ/mol) hydrogen-bonded 1:1 complexes of CH3CN with organic and inorganic acids using density functional theory (DFT) calculations [B3LYP-6-31++G(2d,2p)]. Furthermore, general characteristics of the hydrogen bonds and vibrational changes in the OH stretching band of the acids were also considered. Experimentally observed blue-shifts of the C[triple bond]N stretching band promoted by the hydrogen bonding, which shortens the triple bond length, are very well reproduced and quantitatively depend on the hydrogen bond length. Both predicted enhancement of the infrared and Raman nu(C[triple bond]N) band intensities are in good agreement with the experimental results. Infrared band intensity increase is a direct function of the hydrogen bond energy. However, the predicted increase in the Raman band intensity increase is a more complex function, depending simultaneously on the characteristics of both the hydrogen bond (C[triple bond]N bond length) and the H-donating acid polarizability. Accounting for these two parameters, the calculated nu(C[triple bond]N) Raman intensities of the complexes are explained with a mean error of +/- 2.4%.
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Affiliation(s)
- Jose M Alía
- Departamento de Química-Física, E.U.I.T.A., Universidad de Castilla-La Mancha, Ronda de Calatrava 7, 13071 Ciudad Real, Spain.
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25
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Anharmonic vibrational spectroscopy calculations with electronic structure potentials: comparison of MP2 and DFT for organic molecules. Theor Chem Acc 2007. [DOI: 10.1007/s00214-007-0299-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kido Soule MC, Hore DK, Jaramillo-Fellin DM, Richmond GL. Differing Adsorption Behavior of Environmentally Important Cyanophenol Isomers at the Air−Water Interface. J Phys Chem B 2006; 110:16575-83. [PMID: 16913792 DOI: 10.1021/jp061351o] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Vibrational sum-frequency spectroscopy and surface tensiometry have been used to study the adsorption of m- and p-cyanophenol at the air-water interface. Spectra of the cyano (CN) group under different polarization schemes are utilized to determine its hydrogen bonding environment and orientation. For both isomers, it is found that the cyano group is hydrogen bonded at the interface but that the CN orientation is independent of surface density. The average CN tilt angle (theta(0)), however, is found to differ between the isomers, such that the CN group points down toward the aqueous phase for m-cyanophenol (theta(0) = 96-106 degrees ) but points up toward the vapor phase for the p-cyanophenol (theta(0) = 65-80 degrees ). In addition, this average tilt angle is distributed over a narrow range, sigma(0) < 10 degrees for the meta isomer and sigma(0) < 16 degrees for the para isomer.
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Affiliation(s)
- Melissa C Kido Soule
- Department of Chemistry, University of Oregon, 1253 University of Oregon, Eugene, Oregon 97403, USA
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27
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Bonness S, Kirtman B, Huix M, Sanchez AJ, Luis JM. Simulation of photoelectron spectra with anharmonicity fully included: Application to the X̃A22←X̃A11 band of furan. J Chem Phys 2006; 125:014311. [PMID: 16863302 DOI: 10.1063/1.2210479] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Using a new unconventional procedure for calculating Franck-Condon factors with anharmonicity fully included the X 2A2<--X 1A1 band in the photoelectron spectrum of furan (and deuterated furan) was simulated at the second-order perturbation theory level. All 21 vibrational modes were considered but, in the end, only 4 are required to accurately reproduce the spectrum. Except for our own recent work on ethylene such calculations have been previously limited to tri- or tetraatomic molecules. Most of the effect of anharmonicity is accounted for in first order, although second-order corrections to the vibrational frequencies are important. Based on these simulations we were able to improve upon and extend previous assignments as well as suggest further measurements.
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Affiliation(s)
- Sean Bonness
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA
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28
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Oyanagi C, Yagi K, Taketsugu T, Hirao K. Highly accurate potential-energy and dipole moment surfaces for vibrational state calculations of methane. J Chem Phys 2006; 124:64311. [PMID: 16483211 DOI: 10.1063/1.2162891] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Full-dimensional ab initio potential-energy surface (PES) and dipole moment surface are constructed for a methane molecule at the CCSD(T)/cc-pVTZ and MP2/cc-pVTZ levels of theory, respectively, by the modified Shepard interpolation method based on the fourth-order Taylor expansion [MSI(4th)]. The reference points for the interpolation have been set in the coupling region of CH symmetric and antisymmetric stretching modes so as to reproduce the vibrational energy levels related to CH stretching vibrations. The vibrational configuration-interaction calculations have been performed to obtain the energy levels and the absorption intensities up to 9000 cm(-1) with the use of MSI(4th)-PES. The calculated fundamental frequencies and low-lying vibrational energy levels show that MSI(4th) is superior to the widely employed quartic force field, giving a better agreement with the experimental values. The absorption bands of overtones as well as combination bands, which are caused by purely anharmonic effects, have been obtained up to 9000 cm(-1). Strongly coupled states with visible intensity have been found in the 6500-9000 cm(-1) region where the experimental data are still lacking.
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Affiliation(s)
- Chikako Oyanagi
- Department of Chemistry, Ochanomizu University, Tokyo, Japan
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29
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Baker AB, Samet C, Lyon JT, Andrews L. Pentachlorocyclopropane/Base Complexes: Matrix Isolation Infrared Spectroscopic and Density Functional Study of C−H- - -N Hydrogen Bonds. J Phys Chem A 2005; 109:8280-9. [PMID: 16834216 DOI: 10.1021/jp0581781] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrogen-bonded complexes of pentachlorocyclopropane with the bases acetonitrile, ammonia, monomethylamine, and dimethylamine have been isolated and characterized for the first time in argon matrices at 16 K. Coordination of the proton of pentachlorocyclopropane (Pccp) to the electron donor (N) of the base was evidenced by red shifts of the CH stretching mode. These shifts, which range from 22 to 170 cm(-1), increase in the order CH3CN, NH3, (CH3)NH2, and (CH3)2NH. Density functional theory (DFT) calculations at the B3LYP level agree well with experiment and support the formation of 1:1 complexes of Pccp/base. Distinct changes were observed in ring modes as well as CCl and CCl2 modes. The hydrogen bond energy of the complexes varies from 2.95 to 4.22 kcal/mol and is stronger than our previously studied bromocyclopropane-ammonia complex (2.35 kcal/mol, MP2).
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Affiliation(s)
- Alexander B Baker
- Department of Chemistry, Dickinson College, Carlisle, Pennsylvania 17013, USA
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30
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Torrent-Sucarrat M, Luis JM, Kirtman B. Variational calculation of vibrational linear and nonlinear optical properties. J Chem Phys 2005; 122:204108. [PMID: 15945714 DOI: 10.1063/1.1909031] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
A variational approach for reliably calculating vibrational linear and nonlinear optical properties of molecules with large electrical and/or mechanical anharmonicity is introduced. This approach utilizes a self-consistent solution of the vibrational Schrodinger equation for the complete field-dependent potential-energy surface and, then, adds higher-level vibrational correlation corrections as desired. An initial application is made to static properties for three molecules of widely varying anharmonicity using the lowest-level vibrational correlation treatment (i.e., vibrational Møller-Plesset perturbation theory). Our results indicate when the conventional Bishop-Kirtman perturbation method can be expected to break down and when high-level vibrational correlation methods are likely to be required. Future improvements and extensions are discussed.
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Affiliation(s)
- Miquel Torrent-Sucarrat
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA
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