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Poydashev DG, Ablyasova OS, Ryabov EA. Ultrafast Dissociation Dynamics Induced in [Fe(CO) 5] n Xe m Mixed Clusters by Resonant Femtosecond Infrared Laser Radiation. ACS OMEGA 2022; 7:46203-46212. [PMID: 36570185 PMCID: PMC9773334 DOI: 10.1021/acsomega.2c04367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Real-time dissociation dynamics induced in [Fe(CO)5] n Xe m mixed molecular clusters by femtosecond IR radiation in the 5 μm region was studied for the first time by means of time-resolved methods based on resonant excitation of C≡O vibrations in the molecular core of the cluster and photoionization probing (λ = 400 nm) of its decay products. It was found that IR-excited clusters in the initially cold particle beam are heated and dissociated as a result of relaxation processes, giving rise to free neutral Xe aggregates and Fe(CO)5 molecules. Thus, the formed particles are the origin of signal variations from Xe+ and Fe(CO)5 + ions, which grow on a picosecond time scale. It is concluded that the initial laser excitation of C≡O vibrations in clusterized molecules is followed by the process of cluster dissociation accompanied with the formation of free neutral particles according to the hierarchy of binding energies: weakly bound shells of Xe atoms are evaporated first and much faster than the Fe(CO)5 molecules from the cluster core. The characteristic times of relaxation processes as well as the cluster temperature were estimated.
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Vinklárek IS, Rakovský J, Poterya V, Fárník M. Different Dynamics of CH3 and Cl Fragments from Photodissociation of CH3Cl in Clusters. J Phys Chem A 2020; 124:7633-7643. [DOI: 10.1021/acs.jpca.0c05926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ivo S. Vinklárek
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
- Faculty of Mathematics and PhysicsCharles UniversityKe Karlovu 3121 16Prague 2Czech Republic
| | - Jozef Rakovský
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Viktoriya Poterya
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Michal Fárník
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
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Mikosch J, Zhang J, Trippel S, Eichhorn C, Otto R, Sun R, de Jong WA, Weidemüller M, Hase WL, Wester R. Indirect dynamics in a highly exoergic substitution reaction. J Am Chem Soc 2013; 135:4250-9. [PMID: 23324058 DOI: 10.1021/ja308042v] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The highly exoergic nucleophilic substitution reaction F(-) + CH3I shows reaction dynamics strikingly different from that of substitution reactions of larger halogen anions. Over a wide range of collision energies, a large fraction of indirect scattering via a long-lived hydrogen-bonded complex is found both in crossed-beam imaging experiments and in direct chemical dynamics simulations. Our measured differential scattering cross sections show large-angle scattering and low product velocities for all collision energies, resulting from efficient transfer of the collision energy to internal energy of the CH3F reaction product. Both findings are in strong contrast to the previously studied substitution reaction of Cl(-) + CH3I [Science 2008, 319, 183-186] at all but the lowest collision energies, a discrepancy that was not captured in a subsequent study at only a low collision energy [J. Phys. Chem. Lett. 2010, 1, 2747-2752]. Our direct chemical dynamics simulations at the DFT/B97-1 level of theory show that the reaction is dominated by three atomic-level mechanisms, an indirect reaction proceeding via an F(-)-HCH2I hydrogen-bonded complex, a direct rebound, and a direct stripping reaction. The indirect mechanism is found to contribute about one-half of the overall substitution reaction rate at both low and high collision energies. This large fraction of indirect scattering at high collision energy is particularly surprising, because the barrier for the F(-)-HCH2I complex to form products is only 0.10 eV. Overall, experiment and simulation agree very favorably in both the scattering angle and the product internal energy distributions.
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Affiliation(s)
- Jochen Mikosch
- National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada
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Kasai T, Che DC, Tsai PY, Lin KC. Reaction Dynamics with Molecular Beams and Oriented Molecular Beams: A Tool for Looking Closer to Chemical Reactions and Photodissociations. J CHIN CHEM SOC-TAIP 2012. [DOI: 10.1002/jccs.201100735] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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de Nalda R, Durá J, González-Vázquez J, Loriot V, Bañares L. The primary step in the ultrafast photodissociation of the methyl iodide dimer. Phys Chem Chem Phys 2011; 13:13295-304. [DOI: 10.1039/c1cp20083f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
- Udo Buck
- a Max-Planck Institut für Dynamik und Selbstorganisation , Bunsenstr , 10 D-37073 Göttingen , Germany
| | - Michal FáRníK
- b J. Heyrovský Institute of Physical Chemistry , Academy of Sciences of the Czech Republic , Prague 8 , Czech Republic
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Vidma KV, Baklanov AV, Khvorostov EB, Ishchenko VN, Kochubei SA, Eppink ATJB, Chestakov DA, Parker DH. UV photodissociation of the van der Waals dimer (CH3I)2 revisited: Pathways giving rise to ionic features. J Chem Phys 2005; 122:204301. [PMID: 15945718 DOI: 10.1063/1.1909083] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The CH(3)I A-state-assisted photofragmentation of the (CH(3)I)(2) van der Waals dimer at 248 nm and nearby wavelengths has been revisited experimentally using the time-of-flight mass spectrometry with supersonic and effusive molecular beams and the "velocity map imaging" technique. The processes underlying the appearance of two main (CH(3)I)(2) cluster-specific features in the mass spectra, namely, I(2)(+) and translationally "hot" I(+) ions, have been studied. Translationally hot I(+) ions with an average kinetic energy of 0.94+/-0.02 eV appear in the one-quantum photodissociation of vibrationally excited I(2)(+)((2)Pi(32,g)) ions (E(vib)=0.45+/-0.11 eV) via a "parallel" photodissociation process with an anisotropy parameter beta=1.55+/-0.03. Comparison of the images of I(+) arising from the photoexcitation of CH(3)I clusters versus those from neutral I(2) shows that "concerted" photodissociation of the ionized (CH(3)I)(2)(+) dimer appears to be the most likely mechanism for the formation of molecular iodine ion I(2)(+), instead of photoionization of neutral molecular iodine.
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Affiliation(s)
- Konstantin V Vidma
- Institute of Chemical Kinetics and Combustion, Institutskaja Street 3, Novosibirsk 630090, Russia
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Luo X, Niu D, Kong X, Wen L, Liang F, Pei K, Wang B, Li H. Cluster-assistant generation of multiply charged atomic ions in nanosecond laser ionization of seeded methyl iodide beam. Chem Phys 2005. [DOI: 10.1016/j.chemphys.2004.09.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Buck U. Photodissociation of Hydrogen Halide Molecules in Different Cluster Environments. J Phys Chem A 2002. [DOI: 10.1021/jp0208079] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Udo Buck
- Max-Planck-Institut für Strömungsforschung, Bunsenstrasse 10, D-37073 Göttingen, Germany
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Rasmusson M, Tarnovsky AN, Pascher T, Sundström V, Åkesson E. Photodissociation of CH2ICH2I, CF2ICF2I, and CF2BrCF2I in Solution. J Phys Chem A 2002. [DOI: 10.1021/jp020720n] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marcus Rasmusson
- Department of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | | | - Torbjörn Pascher
- Department of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Villy Sundström
- Department of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Eva Åkesson
- Department of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
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Chen J, Pei L, Shu J, Chen C, Ma X, Shen L, Zhang Y. VUV photoionization of (CH3I) (n=1–4) molecules. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)00864-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kavita K, Das PK. Dynamics of I*(2P1/2) production from fluorinated alkyl iodides at 266, 280, and ∼305 nm. J Chem Phys 2000. [DOI: 10.1063/1.481445] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kreher CJ, Carter RT, Huber JR. Photodissociation of OClO and Ar/OClO and H2O/OClO clusters studied by the resonance enhanced multiphoton ionization-time of flight method. J Chem Phys 1999. [DOI: 10.1063/1.478196] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zhong D, Zewail AH. Femtosecond Real-Time Probing of Reactions. 23. Studies of Temporal, Velocity, Angular, and State Dynamics from Transition States to Final Products by Femtosecond-Resolved Mass Spectrometry. J Phys Chem A 1998. [DOI: 10.1021/jp9805196] [Citation(s) in RCA: 121] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dongping Zhong
- Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
| | - Ahmed H. Zewail
- Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
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Baronavski AP, Owrutsky JC. Vibronic dependence of the B̃ state lifetimes of CH3I and CD3I using femtosecond photoionization spectroscopy. J Chem Phys 1998. [DOI: 10.1063/1.475744] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Molecular clusters. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s1063-5467(98)80003-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Bergmann K, Huber JR. Photoinduced Bimolecular Reactions in Homogeneous [CH3ONO]n Clusters. J Phys Chem A 1997. [DOI: 10.1021/jp962507v] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Bergmann
- Physikalisch-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - J. Robert Huber
- Physikalisch-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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DeBoer G, Burnett JW, Fujimoto A, Young MA. Photodissociation Dynamics of the Charge-Transfer State of the C6H6−I2 Complex. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp9614308] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gary DeBoer
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242
| | | | - Akira Fujimoto
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242
| | - Mark A. Young
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242
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