1
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Mino L, Cazzaniga M, Moriggi F, Ceotto M. Elucidating NO x Surface Chemistry at the Anatase (101) Surface in TiO 2 Nanoparticles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:437-449. [PMID: 36660096 PMCID: PMC9841571 DOI: 10.1021/acs.jpcc.2c07489] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Understanding NO x chemistry at titania nanoparticle surfaces is important for photocatalytic environmental remediation processes. We focus on this problem and put forward an experimental-computational approach based on vibrational spectroscopy grounds. Temperature-dependent IR experiments of NO x adsorption on shape-engineered nanoparticle (101) anatase surfaces are paired with power spectra obtained from Born-Oppenheimer trajectories. Then, the harmonic versus anharmonic vibrational frequencies of several adsorption scenarios are directly compared with the IR experiments. We conclude that molecules are adsorbed mainly by the N-end side and both the intermolecular interactions between adsorbed molecules and (NO)2 dimer formation are responsible for the main NO adsorption spectroscopic features. We also investigate the spectroscopy and the mechanism of formation on defective anatase surfaces of the long-lived greenhouse gas N2O.
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Affiliation(s)
- Lorenzo Mino
- Department
of Chemistry and NIS Centre, University
of Torino, Via Giuria
7, I-10125 Torino, Italy
| | - Marco Cazzaniga
- Dipartimento
di Chimica, Università Degli Studi
di Milano, Via Golgi 19, I-20133 Milano, Italy
| | - Francesco Moriggi
- Dipartimento
di Chimica, Università Degli Studi
di Milano, Via Golgi 19, I-20133 Milano, Italy
| | - Michele Ceotto
- Dipartimento
di Chimica, Università Degli Studi
di Milano, Via Golgi 19, I-20133 Milano, Italy
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2
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Marinakis S, Cockrell C, Trachenko K, Headen TF, Soper AK. Microscopic Structure of Liquid Nitric Oxide. J Phys Chem B 2022; 126:9860-9870. [PMID: 36399601 PMCID: PMC9720726 DOI: 10.1021/acs.jpcb.2c05384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The microscopic structure of nitric oxide is investigated using neutron scattering experiments. The measurements are performed at various temperatures between 120 and 144 K and at pressures between 1.1 and 9 bar. Using the technique of empirical potential structure refinement (EPSR), our results show that the dimer is the main form, around 80%, of nitric oxide in the liquid phase at 120 K, but the degree of dissociation to monomers increases with increasing temperature. The reported degree of dissociation of dimers, and its trend with increasing temperature, is consistent with earlier measurements and studies. It is also shown that nonplanar dimers are not inconsistent with the diffraction data and that the possibility of nitric oxide molecules forming longer oligomers, consisting of bonded nitrogen atoms along the backbone, cannot be ruled out in the liquid. A molecular dynamics simulation is used to compare the present EPSR simulations with an earlier proposed intermolecular potential for the liquid.
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Affiliation(s)
- Sarantos Marinakis
- Department
of Chemistry, University of Patras, PatrasGR-26504, Greece,School
of Health, Sport and Bioscience, University
of East London, Stratford Campus, Water Lane, LondonE15 4LZ, U.K.
| | - Cillian Cockrell
- School
of Physics and Astronomy, Queen Mary University
of London, Mile End Road, LondonE1 4NS, U.K.
| | - Kostya Trachenko
- School
of Physics and Astronomy, Queen Mary University
of London, Mile End Road, LondonE1 4NS, U.K.
| | - Thomas F. Headen
- ISIS
Facility, STFC-UKRI Rutherford Appleton
Laboratory, Harwell Campus, Didcot, OxonOX11 0QX, U.K.
| | - Alan K. Soper
- ISIS
Facility, STFC-UKRI Rutherford Appleton
Laboratory, Harwell Campus, Didcot, OxonOX11 0QX, U.K.,
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3
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Accurate estimation of singlet-triplet gap of strongly correlated systems by CCSD(T) method using improved orbitals. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Schwermann C, Linden S, Doltsinis NL, Zacharias H. On-Surface Chemistry Induced by Long-Lived Excitons: (NO) 2 Dissociation on C 60. J Phys Chem Lett 2020; 11:5490-5496. [PMID: 32584044 DOI: 10.1021/acs.jpclett.0c01247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Solid-state excitonic excitations play an increasingly important role in optoelectronic and light harvesting processes due to their ubiquitous presence in dipolar two-dimensional materials. Here we show that long-lived solid-state excitons induce chemical reactions in adsorbed molecules and thus convert light into chemical energy. For the model system (NO)2 dimer adsorbed on ordered c(4×4) C60 films, time-of-flight measurements following UV laser excitation reveal a slow and a fast dissociative desorption channel, which are assigned to intersystem crossing and internal conversion, respectively, by time-dependent density functional theory calculations.
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Affiliation(s)
- Christian Schwermann
- Institute of Solid State Theory and Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Steffen Linden
- Institute of Physics, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Nikos L Doltsinis
- Institute of Solid State Theory and Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Helmut Zacharias
- Institute of Physics, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
- Center for Soft Nanoscience, Westfälische Wilhelms-Universität, Busso-Peus-Straße 10, 48149 Münster, Germany
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5
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Rizzi V, Mendels D, Sicilia E, Parrinello M. Blind Search for Complex Chemical Pathways Using Harmonic Linear Discriminant Analysis. J Chem Theory Comput 2019; 15:4507-4515. [DOI: 10.1021/acs.jctc.9b00358] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Valerio Rizzi
- Department of Chemistry and Applied Biosciences, ETH Zurich, c/o USI Campus, Via Giuseppe Buffi 13, CH-6900, Lugano, Ticino, Switzerland
- Facoltà di Informatica, Istituto di Scienze Computazionali, Università della Svizzera italiana (USI), Via Giuseppe Buffi 13, CH-6900, Lugano, Ticino, Switzerland
| | - Dan Mendels
- Department of Chemistry and Applied Biosciences, ETH Zurich, c/o USI Campus, Via Giuseppe Buffi 13, CH-6900, Lugano, Ticino, Switzerland
- Facoltà di Informatica, Istituto di Scienze Computazionali, Università della Svizzera italiana (USI), Via Giuseppe Buffi 13, CH-6900, Lugano, Ticino, Switzerland
- Institute for Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Emilia Sicilia
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Rende CS, Italy
| | - Michele Parrinello
- Department of Chemistry and Applied Biosciences, ETH Zurich, c/o USI Campus, Via Giuseppe Buffi 13, CH-6900, Lugano, Ticino, Switzerland
- Facoltà di Informatica, Istituto di Scienze Computazionali, Università della Svizzera italiana (USI), Via Giuseppe Buffi 13, CH-6900, Lugano, Ticino, Switzerland
- Istituto Italiano di Tecnologia (IIT), Via Morego, 30, 16163 Genova GE, Italy
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6
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Takagi N, Ishimura K, Miura H, Shishido T, Fukuda R, Ehara M, Sakaki S. Catalysis of Cu Cluster for NO Reduction by CO: Theoretical Insight into the Reaction Mechanism. ACS OMEGA 2019; 4:2596-2609. [PMID: 31459495 PMCID: PMC6648525 DOI: 10.1021/acsomega.8b02890] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 01/10/2019] [Indexed: 06/10/2023]
Abstract
Density functional theory calculations here elucidated that Cu38-catalyzed NO reduction by CO occurred not through NO dissociative adsorption but through NO dimerization. NO is adsorbed to two Cu atoms in a bridging manner. NO adsorption energy is much larger than that of CO. N-O bond cleavage of the adsorbed NO molecule needs a very large activation energy (ΔG°‡). On the other hand, dimerization of two NO molecules occurs on the Cu38 surface with small ΔG°‡ and very negative Gibbs reaction energy (ΔG°) to form ONNO species adsorbed to Cu38. Then, a CO molecule is adsorbed at the neighboring position to the ONNO species and reacts with the ONNO to induce N-O bond cleavage with small ΔG°‡ and very negative ΔG°, leading to the formation of N2O adsorbed on Cu38 and CO2 molecule in the gas phase. N2O dissociates from Cu38, and then it is readsorbed to Cu38 in the most stable adsorption structure. N-O bond cleavage of N2O easily occurs with small ΔG°‡ and significantly negative ΔG° to form the N2 molecule and the O atom adsorbed on Cu38. The O atom reacts with the CO molecule to afford CO2 and regenerate Cu38, which is rate-determining. N2O species was experimentally observed in Cu/γ-Al2O3-catalyzed NO reduction by CO, which is consistent with this reaction mechanism. This mechanism differs from that proposed for the Rh catalyst, which occurs via N-O bond cleavage of the NO molecule. Electronic processes in the NO dimerization and the CO oxidation with the O atom adsorbed to Cu38 are discussed in terms of the charge-transfer interaction with Cu38 and Frontier orbital energy of Cu38.
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Affiliation(s)
- Nozomi Takagi
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
| | | | - Hiroki Miura
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
- Department
of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1, Minami-osawa, Hachioji, Tokyo 192-0397, Japan
| | - Tetsuya Shishido
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
- Department
of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1, Minami-osawa, Hachioji, Tokyo 192-0397, Japan
| | - Ryoichi Fukuda
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
| | - Masahiro Ehara
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
- Institute
for Molecular Science, Okazaki 444-8585, Japan
| | - Shigeyoshi Sakaki
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
- Fukui
Institute for Fundamental Chemistry, Kyoto
University, 34-4 Takano-Nishihiraki-cho, Sakyo-ku, Kyoto 606-8103, Japan
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7
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Takagi N, Nakagaki M, Ishimura K, Fukuda R, Ehara M, Sakaki S. Electronic processes in NO dimerization on Ag and Cu clusters: DFT and MRMP2 studies. J Comput Chem 2019; 40:181-190. [PMID: 30378149 DOI: 10.1002/jcc.25568] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/30/2018] [Accepted: 07/31/2018] [Indexed: 11/10/2022]
Abstract
Experimentally observed NO dimerization on Cu and Ag surfaces is surprising because binding energy of NO dimer is very small in gas phase. MRMP2, MP2 to MP4, CCSD(T), and DFT studies of NO dimerization on Ag2 and Cu2 clusters disclosed that the CCSD(T) method could be applied to this reaction on Ag2 and Cu2 unlike NO dimerization in gas phase which exhibits significantly large nondynamical electron correlation effect. Charge-transfer (CT) from Ag2 and Cu2 to NO moieties plays important role in NN bond formation between two NO molecules. This CT considerably decreases nondynamical correlation effect. Also, the DFT method could be applied to this NO dimerization, if appropriate DFT functional is used; all pure functionals examined here and most of the hybrid functionals underestimated the activation barrier (Ea ), while only ωB97X provided Ea similar to CCSD(T)-calculated value. NO dimerization on similar Cu2 and Cu5 needs moderately larger Ea than those on Ag2 and Ag5 , because frontier orbital participating in the CT exists at lower energy in Cu2 and Cu5 than in Ag2 and Ag5 . The Ea decreases in the order Ag2 >> Ag38 > Ag7 ∼ Ag5 and the reaction energy (ΔE) is positive (endothermic) in Ag2 but significantly negative in Ag38 , Ag7 , and Ag5 , indicating that various Ag clusters could be effective for NO dimerization except for Ag2 . The decreasing order of Ea and increasing order of exothermicity are attributed to increasing order of the frontier orbital energy of Ag2 < Ag38 < Ag7 ∼ Ag5 . © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Nozomi Takagi
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto, 615-8245, Japan
| | - Masayuki Nakagaki
- Fukui Institute for Fundamental Chemistry (FIFC), Kyoto University, 34-4 Takano-Nishihiraki-cho, Sakyo-ku, Kyoto, 606-8103, Japan
| | - Kazuya Ishimura
- Institute for Molecular Science (IMS), Okazaki, 444-8585, Japan
| | - Ryoichi Fukuda
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto, 615-8245, Japan
| | - Masahiro Ehara
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto, 615-8245, Japan.,Institute for Molecular Science (IMS), Okazaki, 444-8585, Japan
| | - Shigeyoshi Sakaki
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto, 615-8245, Japan.,Fukui Institute for Fundamental Chemistry (FIFC), Kyoto University, 34-4 Takano-Nishihiraki-cho, Sakyo-ku, Kyoto, 606-8103, Japan
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8
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Ashori E, Nazari F, Illas F. Influence of NO and (NO)2 adsorption on the properties of Fe-N4 porphyrin-like graphene sheets. Phys Chem Chem Phys 2017; 19:3201-3213. [DOI: 10.1039/c6cp07898b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe-N4 porphyrin-like graphene catalysis and spin filter characteristics toward NO and (NO)2 dimer adsorption.
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Affiliation(s)
- Elham Ashori
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences
- Zanjan 45137-66731
- Iran
| | - Fariba Nazari
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences
- Zanjan 45137-66731
- Iran
- Center of Climate Change and Global Warming
| | - Francesc Illas
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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9
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Hoshina H, Slipchenko M, Prozument K, Verma D, Schmidt MW, Ivanic J, Vilesov AF. Infrared Spectroscopy and Structure of (NO)n Clusters. J Phys Chem A 2016; 120:527-34. [DOI: 10.1021/acs.jpca.5b10228] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiromichi Hoshina
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Mikhail Slipchenko
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Kirill Prozument
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Deepak Verma
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Michael W. Schmidt
- Department
of Chemistry and Ames Laboratory (US-DOE), Iowa State University, Ames, Iowa 50011, United States
| | - Joseph Ivanic
- Advanced
Biomedical Computing Center, DSITP, Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United States
| | - Andrey F. Vilesov
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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10
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Varga Z, Meana-Pañeda R, Song G, Paukku Y, Truhlar DG. Potential energy surface of triplet N2O2. J Chem Phys 2016; 144:024310. [DOI: 10.1063/1.4939008] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Zoltan Varga
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, USA
| | - Rubén Meana-Pañeda
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, USA
| | - Guoliang Song
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, USA
| | - Yuliya Paukku
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, USA
| | - Donald G. Truhlar
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, USA
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11
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Ryding MJ, Fernández I, Uggerud E. Oxidation of NO˙ by small oxygen species HO2− and O2˙−: the role of negative charge, electronic spin and water solvation. Phys Chem Chem Phys 2016; 18:9524-36. [DOI: 10.1039/c6cp00290k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Oxidation of NO˙ into NO2− occurs upon reaction with HO2−(H2O)n clusters but not with O2˙−(H2O)n clusters.
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Affiliation(s)
- Mauritz Johan Ryding
- Mass Spectrometry Laboratory and Centre of Theoretical and Computational Chemistry
- Department of Chemistry
- University of Oslo
- NO-0315 Oslo
- Norway
| | - Israel Fernández
- Departamento de Química Orgánica I
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040-Madrid
- Spain
| | - Einar Uggerud
- Mass Spectrometry Laboratory and Centre of Theoretical and Computational Chemistry
- Department of Chemistry
- University of Oslo
- NO-0315 Oslo
- Norway
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12
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Trabelsi T, Linguerri R, Ben Yaghlane S, Jaidane NE, Mogren Al-Mogren M, Francisco JS, Hochlaf M. On the role of HNS and HSN as light-sensitive NO-donors for delivery in biological media. J Chem Phys 2015; 143:134301. [PMID: 26450308 DOI: 10.1063/1.4932084] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Results are presented that suggest that thiazyl hydride (HSN)/thionitrosyl hydride (sulfimide, HNS) can be used as light-sensitive compounds for NO-delivery in biological media, as well as markers for the possible detection of intermediates in nitrites + H2S reactions at the cellular level. They are expected to be more efficient than the HNO/HON isovalent species and hence they should be considered instead. A set of characteristic spectroscopic features are identified that could aid in the possible detection of these species in the gas phase or in biological environments. The possibility of intramolecular dynamical processes involving excited states that are capable of interconverting HNS and its isomeric form HSN is examined.
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Affiliation(s)
- Tarek Trabelsi
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - Roberto Linguerri
- Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Université Paris-Est, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - Saida Ben Yaghlane
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - Nejm-Eddine Jaidane
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - Muneerah Mogren Al-Mogren
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Joseph S Francisco
- Department of Chemistry and Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47906, USA
| | - Majdi Hochlaf
- Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Université Paris-Est, 5 bd Descartes, 77454 Marne-la-Vallée, France
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13
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Sen A, Sen S, Mukherjee D. Aspects of Size-Consistency of Orbitally Noninvariant Size-Extensive Multireference Perturbation Theories: A Case Study Using UGA-SSMRPT2 as a Prototype. J Chem Theory Comput 2015; 11:4129-45. [PMID: 26575908 DOI: 10.1021/acs.jctc.5b00457] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Profiling a potential energy surface (PES), all the way to dissociate a molecular state into particular fragments and to display real or avoided crossings, requires a multireference description and the maintenance of size-consistency. The many body methods, which suit this purpose, should thus be size-extensive. Size-extensive theories, which are invariant with respect to transformation among active orbitals are, in principle, size-consistent. Relatively cheaper size-extensive theories, which do not possess this invariance, can still be size-consistent if the active orbitals are localized on the asymptotic fragments. Such methods, if perturbative in nature, require the use of an unperturbed Hamiltonian, which has orbital invariance with respect to the transformation within active, core, and virtual orbitals. The principal focus of this paper is to numerically realize size-consistency with localized active orbitals using our recently developed orbitally noninvariant Unitary Group Adapted State Specific Multireference second order Perturbation Theory (UGA-SSMRPT2) as a prototype method. Our findings expose certain generic potential pitfalls of size-extensive but orbitally noninvariant MRPT theories, which are mostly related to the inability of reaching proper localized active orbitals in the fragments due to the artifacts of the orbital generation procedure. Despite the invariance of the zeroth order CAS function, lack of invariance of the MRPT itself then leads to size-inconsistency. In particular, reaching symmetry broken fragment active orbitals is an issue of concern where suitable state-averaging might ameliorate the problem, but then one has to abandon full orbital optimization. Additionally, there can be situations where the orbitals of the fragment reached as an asymptote of the supermolecule are not the same as those obtained from the optimization of the fragments individually and will require additional transformation. Moreover, for a certain PES, one may either abandon the use of optimized orbitals for that state to preserve proper symmetry and degeneracy in the fragment orbitals or be satisfied with the use of optimized orbitals, which generate broken symmetric orbitals in the fragmentation limit. All these pathologies are illustrated using the PES of various electronic states of multiply bonded systems like N2, C2H2, HCN, C2, and O2. Subject to such proviso, the UGA-SSMRPT2 turns out to be an excellent theory for studying the PES leading to fragmentation of strongly correlated systems satisfying the requirements of size-consistency with localized active orbitals. An unexpected spin-off of our studies is the realization that the size-inextensive MRMP2, which bears a close structural similarity with our theory, might under certain situations display size-consistency. We analyze this feature concretely in our paper. Our studies may serve as a benchmark for monitoring numerically the size-consistency of any state specific multireference theory which is size-extensive but not invariant with respect to transformation of active orbitals.
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Affiliation(s)
- Avijit Sen
- Raman Center for Atomic, Molecular and Optical Sciences, Indian Association for the Cultivation of Science , Kolkata 700 032, India
| | - Sangita Sen
- Raman Center for Atomic, Molecular and Optical Sciences, Indian Association for the Cultivation of Science , Kolkata 700 032, India
| | - Debashis Mukherjee
- Raman Center for Atomic, Molecular and Optical Sciences, Indian Association for the Cultivation of Science , Kolkata 700 032, India
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14
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Hochlaf M, Linguerri R, Francisco JS. On the role of the simplest S-nitrosothiol, HSNO, in atmospheric and biological processes. J Chem Phys 2013; 139:234304. [DOI: 10.1063/1.4840495] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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15
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Chen Y, Liu YJ, Wang HX, Zhao JX, Cai QH, Wang XZ, Ding YH. Silicon-doped graphene: an effective and metal-free catalyst for NO reduction to N2O? ACS APPLIED MATERIALS & INTERFACES 2013; 5:5994-6000. [PMID: 23758047 DOI: 10.1021/am400563g] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Density functional theory (DFT) calculations were performed on the NO reduction on the silicon (Si)-doped graphene. The results showed that monomeric NO dissociation is subject to a high barrier and large endothermicity and thus is unlikely to occur. In contrast, it was found that NO can easily be converted into N2O through a dimer mechanism. In this process, a two-step mechanism was identified: (i) the coupling of two NO molecules into a (NO)2 dimer, followed by (ii) the dissociation of (NO)2 dimer into N2O + O(ad). In the energetically most favorable pathway, the trans-(NO)2 dimer was shown to be a necessary intermediate with a total energy barrier of 0.464 eV. The catalytic reactivity of Si-doped graphene to NO reduction was interpreted on the basis of the projected density of states and charge transfer.
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Affiliation(s)
- Ying Chen
- Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, Colleges of Heilongjiang Province, Harbin Normal University, Harbin, China
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16
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Coe JP, Taylor DJ, Paterson MJ. Monte Carlo configuration interaction applied to multipole moments, ionization energies, and electron affinities. J Comput Chem 2013; 34:1083-93. [DOI: 10.1002/jcc.23211] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 11/23/2012] [Accepted: 12/01/2012] [Indexed: 11/07/2022]
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17
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Ivanic J, Schmidt MW, Luke B. High-level theoretical study of the NO dimer and tetramer: has the tetramer been observed? J Chem Phys 2012; 137:214316. [PMID: 23231240 PMCID: PMC3528699 DOI: 10.1063/1.4769226] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 11/14/2012] [Indexed: 11/14/2022] Open
Abstract
The ground-state properties of (NO)(2) and (NO)(4) have been investigated using multireference second-order perturbation theory (MRMP2) and include a two-tier extrapolation to the complete basis set (CBS) limit. For the NO dimer the MRMP2(18,14)/CBS predicted structure, binding energy (with respect to 2NO; D(e) = 3.46 kcal/mol), and dipole moment (u(e) = 0.169 D) are in excellent agreement with experimental measurements (D(e) = 2.8-3.8 kcal/mol; u(e) = 0.171 D). Additionally, three of four intermolecular anharmonic MRMP2(18,14)/CBS-estimated frequencies (143 cm(-1), 238 cm(-1), 421 cm(-1)) are in excellent agreement with recent gas-phase experimental measurements (135 cm(-1), 239 cm(-1), 429/428 cm(-1)); however, the predicted value of 151 cm(-1) for the out-of-plane torsion (A(2)) is elevated compared to recent experimental estimates of 97-117 cm(-1). Our finding that this infrared-forbidden vibration is also predicted to have an extremely low Raman activity (0.04 Å/amu at the MP2/QZ level of theory) conflicts with Raman measurements of a strong intensity for a low frequency band; however, these studies were performed for low temperature solid and liquid phases. Probing the possibility of the presence of higher order clusters we investigated the stability of (NO)(4) and discovered three isomers, each resembling pairs of dimers, that were stable to dissociation to 2(NO)(2), with the lowest-energy isomer (C(i) structure) having a predicted binding energy almost identical to that of the dimer. Computed vibrational frequencies of the C(i) isomer indicate that the 12 highest-frequency modes resemble barely shifted NO dimer-combined bands while the 13th highest-frequency mode at ~100 cm(-1) is exclusive to (NO)(4). Moreover, this tetramer-unique vibration is infrared inactive but has a very high predicted Raman activity of some 24 Å/amu. Guided by the theoretical results, we reexamined and reassigned experimental Raman and infrared data going back to 1951 and determined that our best predictions of vibrational frequencies of (NO)(2) and (NO)(4) are consistent with experimental observations. We thus postulate the existence and observation of (NO)(4).
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Affiliation(s)
- Joseph Ivanic
- Advanced Biomedical Computing Center, Information Systems Program, SAIC-Frederick, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, USA.
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18
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Arulsamy N, Bohle DS, Holman CL, Perepichka I. E versus Z diazeniumdiolation of acetoacetate-derived carbanions. J Org Chem 2012; 77:7313-8. [PMID: 22852822 DOI: 10.1021/jo301025k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Nitric oxide adds to methyl acetoacetate in the presence of KOH in methanol at room temperature to form potassium acetylsydnonate N-oxide (K1) with an (E)-diazeniumdiolation and potassium acetate diazenium diolate (K(2)2) from a (Z)-diazeniumdiolation. A study of the reaction with LiOH, NaOH, and NMe(4)OH and with ethyl acetate substrate reveals that the temperature of the reaction greatly influences the nitric oxide reactivity. At 23 °C, nitric oxide adds to give both E and Z products, whereas at -5 °C the gas reacts almost exclusively to give Z addition. The (Z)-diazeniumdiolation products, namely, the alkali metal and NMe(4)(+) salts of methyl and ethylbutenoate-2-diazeniumdiolate-3-hydroxylate (3(2-) and 4(2-)), are isolated in good yields. The alkali metal salts are not amenable for recrystallization because of their ready decomposition in aqueous solutions. However, [NMe(4)](2)[MeC(O)C(N(2)O(2))CO(2)Me] is readily recrystallized from a methanol/acetonitrile solvent mixture. The crystals are unambiguously characterized by X-ray crystallography. NMR spectra for all of the 3(2-) and 4(2-) salts reveal the presence of two isomers in aq solutions. But the structure of the NMe(4)(+) salt contains only one of the isomers. Our attempts to cyclize the isolated and purified butenoatediazeniumdiolates from the (Z)-diazeniumdiolation to the E-containing sydnonate products were unsuccessful. TGA/DSC data for all of the products demonstrate the thermal instability of the salts at high temperatures. The salts decompose exothermally possibly with the release of N(2)O among other gases.
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Affiliation(s)
- Navamoney Arulsamy
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, Wyoming 82072-2000, USA.
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19
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Zuo MH, Liu HL, Huang XR, Cui SX. A theoretical study of the reaction of N(4 S) with nitrogen dioxide on the N2O2 potential energy surface. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2012. [DOI: 10.1134/s0036024412070199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Abstract
Photofragment spectroscopy is combined with imaging techniques and time-resolved measurements of photoions and photoelectrons to explore the predissociation dynamics of weakly bound molecules. Recent experimental advances include measurements of pair-correlated distributions, in which energy disposal in one cofragment is correlated with a state-selected level of the other fragment, and femtosecond pump-probe experiments, in some cases with coincidence detection. An application in which coincident measurements are carried out in the molecular frame is also described. To illustrate these state-selective and time-resolved techniques, we review two recent applications: (a) the photoinitiated dissociation of the covalently bound NO dimer on the ground and excited electronic states and the role of state couplings and (b) the state-selected vibrational predissociation of hydrogen-bonded acetylene dimers with HCl (acid) and ammonia (base) and the importance of angular momentum constraints. We highlight the crucial role of theoretical models in interpreting results.
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Affiliation(s)
- Hanna Reisler
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482
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21
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Zuo MH, Liu HL, Huang XR, Li JL, Sun CC. Atomic radical–molecule reaction N (4S)+NO2 (2A1): Mechanistic study. Chem Phys 2009. [DOI: 10.1016/j.chemphys.2008.12.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Pulido A, Nachtigall P. Theoretical investigation of dinitrosyl complexes in Cu-zeolites as intermediates in deNOx process. Phys Chem Chem Phys 2009; 11:1447-58. [PMID: 19224046 DOI: 10.1039/b818116k] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The structure and stability of nitrosyl complexes formed in Cu-FER zeolite were investigated using a periodic DFT model. The reliability of both DFT methods and cluster models when describing the Cu(+) interaction with NO molecules was examined. The relative stabilities of mononitrosyl complexes on various Cu(+) sites in Cu-FER are governed by the deformation energy of the particular site. Three types of dinitrosyl complexes with different coordination on the Cu(+) cation were identified: (i) four-fold tetrahedral, (ii) four-fold square-planar and (iii) three-fold trigonal-planar complexes. The most stable dinitrosyl complex, formed when the two NO molecules interact with Cu(+)via the N atom, has a tetrahedral coordination on Cu(+). The cyclic adsorption complex, having a square-planar arrangement of ligands on Cu(+) and interaction via O atoms, is only about 10 kJ mol(-1) less stable than the N-down dinitrosyl complex. This cyclic dinitrosyl complex is suggested to be the key intermediate in the deNO(x) process taking place in Cu-zeolites.
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Affiliation(s)
- Angeles Pulido
- Institute of Organic Chemistry and Biochemistry, ASCR, v.v.i., Flemingovo nám. 2, 16610, Prague 6, Czech Republic
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23
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Taguchi N, Mochizuki Y, Ishikawa T, Tanaka K. Multi-reference calculations of nitric oxide dimer. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2007.11.084] [Citation(s) in RCA: 8] [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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24
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Li Y. Multiconfigurational self-consistent field and multireference internally contracted configuration interaction studies on the excited states of weakly bonded NO2 dimer (N2O4). J Chem Phys 2007; 127:204502. [DOI: 10.1063/1.2801982] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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25
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Gijsbertsen A, Siu W, Kling MF, Johnsson P, Jansen P, Stolte S, Vrakking MJJ. Direct determination of the sign of the NO dipole moment. PHYSICAL REVIEW LETTERS 2007; 99:213003. [PMID: 18233214 DOI: 10.1103/physrevlett.99.213003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Indexed: 05/25/2023]
Abstract
We report a novel approach for determining the sign of permanent dipole moments, using nitric oxide [NO(v=0)] as an example. State-selected NO (j=|m|=|Omega=1/2) molecules are focused using a hexapole and oriented in a strong dc electric field. The angular distributions of ionic fragments resulting from extreme ultraviolet single-photon and multiphoton dissociative ionization at 400 and 800 nm are measured and indicate that the dipole moment is negative (corresponding to N-O+). The experiments thus rule out an error in the sign of the dipole of NO as the possible source of a remarkable discrepancy between previous theoretical and experimental work on orientation effects in bimolecular collisions involving oriented NO.
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Affiliation(s)
- A Gijsbertsen
- FOM Institute for Atomic and Molecular Physics (AMOLF), Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
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26
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Glendening ED, Halpern AM. Ab initio calculations of nitrogen oxide reactions: Formation of N2O2, N2O3, N2O4, N2O5, and N4O2 from NO, NO2, NO3, and N2O. J Chem Phys 2007; 127:164307. [DOI: 10.1063/1.2777145] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Levchenko SV, Reisler H, Krylov AI, Gessner O, Stolow A, Shi H, East ALL. Photodissociation dynamics of the NO dimer. I. Theoretical overview of the ultraviolet singlet excited states. J Chem Phys 2007; 125:084301. [PMID: 16965006 DOI: 10.1063/1.2222355] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Molecular orbital theory and calculations are used to describe the ultraviolet singlet excited states of NO dimer. Qualitatively, we derive and catalog the dimer states by correlating them with monomer states, and provide illustrative complete active space self-consistent field calculations. Quantitatively, we provide computational estimates of vertical transition energies and absorption intensities with multireference configuration interaction and equations-of-motion coupled-cluster methods, and examine an important avoided crossing between a Rydberg and a valence state along the intermonomer and intramonomer stretching coordinates. The calculations are challenging, due to the high density of electronic states of various types (valence and Rydberg, excimer and charge transfer) in the 6-8 eV region, and the multiconfigurational nature of the ground state. We have identified a bright charge-transfer (charge-resonance) state as responsible for the broadband seen in UV absorption experiments. We also use our results to facilitate the interpretation of UV photodissociation experiments, including the time-resolved 6 eV photodissociation experiments to be presented in the next two papers of this series.
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Affiliation(s)
- Sergey V Levchenko
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089-0482, USA
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28
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Nakai I, Kondoh H, Shimada T, Yokota R, Katayama T, Ohta T, Kosugi N. Geometric and electronic structures of NO dimer layers on Rh(111) studied with near edge x-ray absorption fine structure spectroscopy: Experiment and theory. J Chem Phys 2007; 127:024701. [PMID: 17640139 DOI: 10.1063/1.2751156] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Adsorption of NO on the Rh(111) surface has been studied in the monolayer, bilayer, and multilayer regimes with near edge x-ray absorption fine structure (NEXAFS) spectroscopy. NO dimer layers are formed on a chemisorbed monomer layer. The polarization dependence in the NEXAFS spectra of the dimer components has contradicted the previous assignments. To determine the structure of the NO dimer layers from the polarization analysis of the NEXAFS spectra, ab initio configuration interaction calculations have been carried out for some low-lying core excited states of the weakly bound NO dimer with cis-ONNO planar geometry. It is revealed that the NO dimers in the multilayer are standing with the N-N bond perpendicular to the surface, while in the second layer they are rather lying on the first monomer layer.
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Affiliation(s)
- Ikuyo Nakai
- School of Science, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
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29
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Dutton AS, Suhrada CP, Miranda KM, Wink DA, Fukuto JM, Houk KN. Mechanism of pH-dependent decomposition of monoalkylamine diazeniumdiolates to form HNO and NO, deduced from the model compound methylamine diazeniumdiolate, density functional theory, and CBS-QB3 calculations. Inorg Chem 2007; 45:2448-56. [PMID: 16529464 PMCID: PMC3164114 DOI: 10.1021/ic051505z] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Isopropylamine diazeniumdiolate, IPA/NO, the product of the reaction of isopropylamine and nitric oxide, NO, decomposes in a pH-dependent manner to afford nitroxyl, HNO, in the pH range of 13 to above 5, and NO below pH 7. Theoretical studies using B3LYP/6-311+G(d) density functional theory, the polarizable continuum and conductor-like polarizable continuum solvation models, and the high-accuracy CBS-QB3 method on the simplified model compound methylamine diazeniumdiolate predict a mechanism involving HNO production via decomposition of the unstable tautomer MeNN+(O-)NHO-. The production of NO at lower pH is predicted to result from fragmentation of the amide/NO adduct upon protonation of the amine nitrogen.
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Affiliation(s)
- Andrew S. Dutton
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | - Christopher P. Suhrada
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | | | - David A. Wink
- Radiation Biology Branch, National Cancer Institute, Bethesda, MD 20892
| | - Jon M. Fukuto
- Department of Molecular and Medical Pharmacology, Center for the Health Sciences, University of California, Los Angeles, CA 90095
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
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30
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Kachi-Terajima C, Akatsuka T, Kohbara MA, Takamizawa S. Structural and Magnetic Study of N2, NO, NO2, and SO2 Adsorbed within a Flexible Single-Crystal Adsorbent of [Rh2(bza)4(pyz)]n. Chem Asian J 2007; 2:40-50. [PMID: 17441137 DOI: 10.1002/asia.200600317] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The crystalline one-dimensional compound, [Rh(II)2(bza)4(pyz)]n (1) (bza = benzoate, pyz = pyrazine) demonstrates gas adsorbency for N2, NO, NO2, and SO2. These gas-inclusion crystal structures were characterized by single-crystal X-ray crystallography as 1 x 1.5 N2 (298 K), 1 x 2.5 N2 (90 K), and 1 x 1.95 NO (90 K) under forcible adsorption conditions and 1 x 2 NO2 (90 K) and 1 x 3 SO2 (90 K) under ambient pressure. Crystal-phase transition to the P1 space group that correlates with gas adsorption was observed under N2, NO, and SO2 conditions. The C2/c space group was observed under NO2 conditions without phase transition. All adsorbed gases were stabilized by the host lattice. In the N2, NO, and SO2 inclusion crystals at 90 K, short interatomic distances within van der Waals contacts were found among the neighboring guest molecules along the channel. The adsorbed NO molecules generated the trans-NO...NO associated dimer with short intermolecular contacts but without the conventional chemical bond. The magnetic susceptibility of the NO inclusion crystal indicated antiferromagnetic interaction between the NO molecules and paramagnetism arising from the NO monomer. The NO2 inclusion crystal structure revealed that the gas molecules were adsorbed in the crystal in dimeric form, N2O4.
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Affiliation(s)
- Chihiro Kachi-Terajima
- International Graduate School of Arts and Sciences, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236-0027, Japan
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31
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Lu YJ, Liang CW, Lin JJ. Crossed molecular beam studies on the reaction dynamics of O(1D)+N2O. J Chem Phys 2006; 125:133121. [PMID: 17029447 DOI: 10.1063/1.2202828] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The reaction of oxygen atom in its first singlet excited state with nitrous oxide was investigated under the crossed molecular beam condition. This reaction has two major product channels, NO+NO and N2+O2. The product translational energy distributions and angular distributions of both channels were determined. Using oxygen-18 isotope labeled O(1D) reactant, the newly formed NO can be distinguished from the remaining NO that was contained in the reactant N2O. Both channels have asymmetric and forward-biased angular distributions, suggesting that there is no long-lived collision complex with lifetime longer than its rotational period. The translational energy release of the N2+O2 channel (fT = 0.57) is much higher than that of the NO+NO channel (fT = 0.31). The product energy partitioning into translational, rotational, and vibrational degrees of freedom is discussed to learn more about the reaction mechanism. The branching ratio between the two product channels was estimated. The 46N2O product of the isotope exchange channel, 18O+44N2O-->16O+46N2O, was below the detection limit and therefore, the upper limit of its yield was estimated to be 0.8%.
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Affiliation(s)
- Yu-Ju Lu
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan
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32
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Li Y, Vo CK. Multireference configuration interaction studies on the ground and excited states of N2O2: the potential energy curves of N2O2 along N-N distance. J Chem Phys 2006; 125:094303. [PMID: 16965076 DOI: 10.1063/1.2339023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this paper, the ground and excited states of N2O2 were studied at the multireference configuration interaction (MRCI) level of theory with Dunning's [J. Chem. Phys. 90, 1007 (1985); 96, 6796 (1992)] correlation consistent basis sets augo-cc-pVDZ and aug-cc-pVTZ. The geometry optimizations were performed for the ground state of N2O2. The vertical excitation energies and transition moments were calculated for the low-lying singlet states of N2O2 including the lowest three 1A1 states, two 1B1 states, one 1B2 state, and two 1A2 states at the MRCI level of theory with Dunning's correlation consistent basis sets aug-cc-pVDZ, aug-cc-pVTZ, and aug-cc-pVQZ. Furthermore, for the first time, the potential energy curves were calculated at the complete active space self-consistent-field and MRCI levels of theory for as many as 12 N2O2 singlet electronic states along the N-N distance. The dissociation asymptotes of these 12 N2O2 singlet electronic states were discussed.
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Affiliation(s)
- Yumin Li
- Department of Chemistry, East Carolina University, Greenville, North Carolina 27858, USA.
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33
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Nakamura H, Yamashita K. Theoretical study of the photodesorption mechanism of nitric oxide on a Ag(111) surface: A nonequilibrium Green’s function approach to hot-electron tunneling. J Chem Phys 2006; 125:084708. [PMID: 16965040 DOI: 10.1063/1.2338027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The photoinduced desorption of NO molecules on a Ag surface was studied theoretically using a recently developed method based on the nonequilibrium Green's function approach combined with the density functional theory. Geometry optimizations for the stable NO dimer phase were carried out, and two structures of adsorbed dimers were identified. We calculated the reaction probabilities as a function of incident photon energy for each of the dimers and compared them with experimental action spectra. The two main features of the action spectra, (i) a long tail to the long wavelength (approximately 600 nm) and (ii) a rapid increase at approximately 350 nm, were well reproduced. By theoretical analysis, we found the importance of quantum interference for the interfacial charge transfer between the metal substrate and the adsorbate, as well as the contribution of secondary electrons. Our calculations suggest that the photoactive species is dimeric and that the resonant level is single for the photodesorption of NO.
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Affiliation(s)
- Hisao Nakamura
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
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34
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Determination of potential energy functions and calculation transport properties of oxygen and nitric oxide via the inversion of reduced viscosity collision integrals at zero pressure. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2006.03.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Polák R, Fišer J. Multiconfiguration SCF electric field gradients in (NO)2 and its singly charged ions. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2006.03.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Gessner O, Lee AMD, Shaffer JP, Reisler H, Levchenko SV, Krylov AI, Underwood JG, Shi H, East ALL, Wardlaw DM, Chrysostom ETH, Hayden CC, Stolow A. Femtosecond Multidimensional Imaging of a Molecular Dissociation. Science 2006; 311:219-22. [PMID: 16357226 DOI: 10.1126/science.1120779] [Citation(s) in RCA: 149] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The coupled electronic and vibrational motions governing chemical processes are best viewed from the molecule's point of view-the molecular frame. Measurements made in the laboratory frame often conceal information because of the random orientations the molecule can take. We used a combination of time-resolved photoelectron spectroscopy, multidimensional coincidence imaging spectroscopy, and ab initio computation to trace a complete reactant-to-product pathway-the photodissociation of the nitric oxide dimer-from the molecule's point of view, on the femtosecond time scale. This method revealed an elusive photochemical process involving intermediate electronic configurations.
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Affiliation(s)
- O Gessner
- Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Ontario K1A 0R6, Canada
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37
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Bohle DS, Ivanic J, Saavedra JE, Smith KN, Wang YN. E/Z conformation and the vibrational spectroscopy of Me2NN(O)=NOMe. J Phys Chem A 2005; 109:11317-21. [PMID: 16331917 DOI: 10.1021/jp054730a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The simple neutral diazenium diolate, O2-methyl-1-(N, N-dimethylamino)diazen-1-ium-1,2-diolate, [Me2NN(O)=NOMe], was experimentally examined by vibrational spectroscopy and the results compared to the theoretically calculated values in an effort to detect both Z and E conformers which result from the stereochemistry of the N=N multiple bond. Room-temperature Raman and infrared spectra were measured and the results compared with the values calculated theoretically with MP2 and density functional techniques (B3LYP). An analysis of the observed frequencies suggests that, down to a detection limit of about 1/1000, only a small quantity of trans (E) diazeniumdiolate, <0.05%, may be present at room temperature.
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Affiliation(s)
- D Scott Bohle
- Advanced Biomedical Computing Center, SAIC Frederick, National Cancer Institute at Frederick, Frederick, Maryland 21702, USA.
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38
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Zhao YL, Bartberger MD, Goto K, Shimada K, Kawashima T, Houk KN. Theoretical Evidence for Enhanced NO Dimerization in Aromatic Hosts: Implications for the Role of the Electrophile (NO)2 in Nitric Oxide Chemistry. J Am Chem Soc 2005; 127:7964-5. [PMID: 15926791 DOI: 10.1021/ja042247s] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nitric oxide dimerization in gas phase and aromatic hosts (benzene) has been investigated with ab initio quantum mechanics. Using the (RO)MP2-aug-cc-pVDZ method, the computed bond dissociation energy (ON...NO) and geometry of (NO)2 in the gas phase are consistent with the reported spectroscopic data. A relatively strong interaction (-5.4 kcal/mol) between (NO)2 and benzene indicates that aromatic surrounding enhances the NO dimerization. Calculations on reactions of phosphine and methanethiol with NO and (NO)2 show that the dimer is much more reactive. This explains reactions of NO with phosphines and thiols.
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Affiliation(s)
- Yi-Lei Zhao
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
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39
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Ab initio calculation of nitrogen oxide dimer structure and its anion-radical. J STRUCT CHEM+ 2005. [DOI: 10.1007/s10947-006-0033-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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40
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Potter AB, Wei J, Reisler H. Photoinitiated Predissociation of the NO Dimer in the Region of the Second and Third NO Stretch Overtones. J Phys Chem B 2005; 109:8407-14. [PMID: 16851987 DOI: 10.1021/jp046226w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photofragment yield spectra and NO(X(2)Pi(1/2,3/2); v = 1, 2, 3) product vibrational, rotational, and spin-orbit state distributions were measured following NO dimer excitation in the 4000-7400 cm(-1) region in a molecular beam. Photofragment yield spectra were obtained by monitoring NO(X(2)Pi; v = 1, 2, 3) dissociation products via resonance-enhanced multiphoton ionization. New bands that include the symmetric nu(1) and asymmetric nu(5) NO stretch modes were observed and assigned as 3nu(5), 2nu(1) + nu(5), nu(1) + 3nu(5), and 3nu(1) + nu(5). Dissociation occurs primarily via Deltav = -1 processes with vibrational energy confined preferentially to one of the two NO fragments. The vibrationally excited fragments are born with less rotational energy than predicted statistically, and fragments formed via Deltav = -2 processes have a higher rotational temperature than those produced via Deltav = -1 processes. The rotational excitation likely derives from the transformation of low-lying bending and torsional vibrational levels in the dimer into product rotational states. The NO spin-orbit state distribution reveals a slight preference for the ground (2)Pi(1/2) state, and in analogy with previous results, it is suggested that the predominant channel is X(2)Pi(1/2) + X(2)Pi(3/2). It is suggested that the long-range potential in the N-N coordinate is the locus of nonadiabatic transitions to electronic states correlating with excited product spin-orbit states. No evidence of direct excitation to electronic states whose vertical energies lie in the investigated energy region is obtained.
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Affiliation(s)
- A B Potter
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, USA
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Morato M, Gasmi K, Montero C, González Ureña A. Molecular beam electric resonance without A and B fields: NO versus (NO)2 depletion spectra. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.04.123] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Gijsbertsen A, de Lange M, Wiskerke A, Linnartz H, Drabbels M, Kłos J, Stolte S. Sign of the state-to-state steric asymmetry of rotationally inelastic atom–molecule collisions. Chem Phys 2004. [DOI: 10.1016/j.chemphys.2004.02.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dribinski V, Potter A, Fedorov I, Reisler H. Photoexcitation of the NO dimer below the threshold of the NO(A2Σ+)+NO(X2Π) channel: a photoion and photoelectron imaging study. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2003.12.092] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dutton AS, Fukuto JM, Houk KN. The Mechanism of NO Formation from the Decomposition of Dialkylamino Diazeniumdiolates: Density Functional Theory and CBS-QB3 Predictions. Inorg Chem 2004; 43:1039-45. [PMID: 14753826 DOI: 10.1021/ic0349609] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The mechanism of decomposition of dialkylamino diazeniumdiolate salts, R(2)N[NONO](-)M(+), to form nitric oxide, NO, was explored using theoretical methods. B3LYP/6-311+G(d) density functional theory calculations gave the optimized geometries, and energetics were further evaluated with the high accuracy CBS-QB3 method, when feasible. Relative pK(a) values were estimated using the PCM model for aqueous solvation. The terminal oxygen is the most basic site, followed closely by the internal oxygen. Protonation of these sites does not lead to decomposition. However, protonation of the weakly basic amino nitrogen leads to very rapid decomposition and NO generation.
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Affiliation(s)
- Andrew S Dutton
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, USA
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Gessner O, Chrysostom ETH, Lee AMD, Wardlaw DM, Ho ML, Lee SJ, Cheng BM, Zgierski MZ, Chen IC, Shaffer JP, Hayden CC, Stolow A. Non-adiabatic intramolecular and photodissociation dynamics studied by femtosecond time-resolved photoelectron and coincidence imaging spectroscopy. Faraday Discuss 2004; 127:193-212. [PMID: 15471347 DOI: 10.1039/b316742a] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Time-resolved photoelectron spectroscopy (TRPES) is emerging as a useful tool for the study of non-adiabatic dynamics in isolated polyatomic molecules and clusters due to its sensitivity to both electronic and vibrational dynamics. A powerful extension of TRPES, coincidence imaging spectroscopy (CIS), based upon femtosecond time-resolved 3D momentum vector imaging of both photoions and photoelectrons in coincidence, is a new technique for the study of complex dissociative processes. Here we show how these spectroscopies can be used to study both non-adiabatic intramolecular and photodissociation dynamics in polyatomic molecules. Intramolecular dynamics in the alpha, beta-enones acrolein, crotonaldehyde and methyl vinyl ketone are studied using both TRPES and laser-induced fluorescence of HCO(X) product yields. The location of the methyl group is seen to have very dramatic effects on the relative electronic relaxation rates and the HCO(X) yield. Applying both TRPES and CIS to the 200 nm and 209 nm photodissociation of the nitric oxide dimer, (NO)2, we observe the fs time-scale evolution of the excited parent neutral via its photoelectron spectrum and the emergence of the NO(A) photofragment including its energy and angular distributions.
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Affiliation(s)
- O Gessner
- Steacie Institute for Molecular Sciences, National Research Council, Ottawa ON, Canada
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Tsubouchi M, de Lange CA, Suzuki T. Femtosecond time-resolved charged particle imaging studies of the ultraviolet photodissociation of the NO dimer. J Chem Phys 2003. [DOI: 10.1063/1.1624600] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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47
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Tobita M, Perera SA, Musial M, Bartlett RJ, Nooijen M, Lee JS. Critical comparison of single-reference and multireference coupled-cluster methods: Geometry, harmonic frequencies, and excitation energies of N2O2. J Chem Phys 2003. [DOI: 10.1063/1.1619952] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Potter AB, Dribinski V, Demyanenko AV, Reisler H. Exit channel dynamics in the ultraviolet photodissociation of the NO dimer: (NO)2→NO(A 2Σ+)+NO(X 2Π). J Chem Phys 2003. [DOI: 10.1063/1.1606442] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mawhinney RC, Goddard JD. Lowest Singlet and Triplet Potential Energy Surfaces of S2N2. Inorg Chem 2003; 42:6323-37. [PMID: 14514308 DOI: 10.1021/ic0301270] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Forty four stationary points have been located on the lowest singlet and triplet potential energy surfaces of S(2)N(2). Ten minima and ten saddle points on the lowest singlet surface and eleven minima and thirteen saddle points on the lowest triplet surface were found. All saddle points were connected to minima or lower-order saddle points by following the intrinsic reaction coordinate. Renner-Teller effects in the linear isomers were studied by examining their bending curves. The S(2)N(2) polymerization mechanism was investigated by first locating the transition state corresponding to ring opening and then considering all species connected to it that are close in energy. The commonly accepted mechanism is problematic due to the number of species that would lead to dissociation to SN + SN. Other possible isomers that are consistent with the experimental evidence but do not connect to SN radicals in the dissociation limit were examined. A mechanism of polymerization to (SN)(x)() is proposed that involves excitation of the square planar singlet molecule to the triplet surface. The triplet species then undergoes a puckering, and polymerization occurs in a direction approximately perpendicular to the S(2)N(2) plane. Consideration of the predicted vibrational frequencies suggests the structure of the second isomer of S(2)N(2). This isomer has a trans-NSSN structure with a long SS bond. The energetics of trans-NSSN are consistent with the observed temperature effects in the dimerization of SN. Analysis of the bending curves of linear NSSN and NSNS indicates that trans-NSSN is the only isomer which has a small yet significant barrier to that dimerization.
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Affiliation(s)
- Robert C Mawhinney
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, Canada H3G 1M8
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Eisfeld W, Morokuma K. Theoretical study of the potential stability of the peroxo nitrate radical. J Chem Phys 2003. [DOI: 10.1063/1.1594712] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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