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Bañares L, Aoiz FJ, González-Lezana T, Herrero VJ, Tanarro I. Influence of rotation and isotope effects on the dynamics of the N(D2)+H2 reactive system and of its deuterated variants. J Chem Phys 2005; 123:224301. [PMID: 16375470 DOI: 10.1063/1.2131075] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Integral cross sections and thermal rate constants have been calculated for the N((2)D)+H(2) reaction and its isotopic variants N((2)D)+D(2) and the two-channel N((2)D)+HD by means of quasiclassical trajectory and statistical quantum-mechanical model methods on the latest ab initio potential-energy surface [T.-S. Ho et al., J. Chem. Phys. 119, 3063 (2003)]. The effect of rotational excitation of the diatom on the dynamics of these reactions has been investigated and interesting discrepancies between the classical and statistical model calculations have been found. Whereas a net effect of reagent rotation on reactivity is always observed in the classical calculations, only a very slight effect is observed in the case of the asymmetric N((2)D)+HD reaction for the statistical quantum-mechanical method. The thermal rate constants calculated on this Potential-Energy Surface using quasiclassical trajectory and statistical model methods are in good agreement with the experimental determinations, although the latter are somewhat larger. A reevaluation of the collinear barrier of the potential surface used in the present study seems timely. Further theoretical and experimental studies are needed for a full understanding of the dynamics of the title reaction.
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Affiliation(s)
- L Bañares
- Departamento de Química Física, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain.
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Aoiz FJ, Bañares L, Herrero VJ, Sáez Rábanos V, Tanarro I. The H + D2 → HD + D Reaction. Quasiclassical Trajectory Study of Cross Sections, Rate Constants, and Kinetic Isotope Effect. J Phys Chem A 1997. [DOI: 10.1021/jp971368u] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- F. J. Aoiz
- Departamento de Química Física, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Instituto de Estructura de la Materia (CSIC), Serrano 123, 28006 Madrid, Spain, and Departamento de Química General y Bioquímica, ETS Ingenieros de Montes, Universidad Politécnica, 28040 Madrid, Spain
| | - L. Bañares
- Departamento de Química Física, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Instituto de Estructura de la Materia (CSIC), Serrano 123, 28006 Madrid, Spain, and Departamento de Química General y Bioquímica, ETS Ingenieros de Montes, Universidad Politécnica, 28040 Madrid, Spain
| | - V. J. Herrero
- Departamento de Química Física, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Instituto de Estructura de la Materia (CSIC), Serrano 123, 28006 Madrid, Spain, and Departamento de Química General y Bioquímica, ETS Ingenieros de Montes, Universidad Politécnica, 28040 Madrid, Spain
| | - V. Sáez Rábanos
- Departamento de Química Física, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Instituto de Estructura de la Materia (CSIC), Serrano 123, 28006 Madrid, Spain, and Departamento de Química General y Bioquímica, ETS Ingenieros de Montes, Universidad Politécnica, 28040 Madrid, Spain
| | - I. Tanarro
- Departamento de Química Física, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Instituto de Estructura de la Materia (CSIC), Serrano 123, 28006 Madrid, Spain, and Departamento de Química General y Bioquímica, ETS Ingenieros de Montes, Universidad Politécnica, 28040 Madrid, Spain
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Classical trajectory studies of the reagent initial orientation and rotational energy dependence of the reaction O (3P) + I2→OI+I as a function of the collision energy. Chem Phys Lett 1991. [DOI: 10.1016/0009-2614(91)80292-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Aoiz FJ, Herrero VJ, Sáez Rábanos V. Effects of translational, rotational, and vibrational energy on the dynamics of the D+H2 exchange reaction. A classical trajectory study. J Chem Phys 1991. [DOI: 10.1063/1.460133] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Classical trajectory calculations for the D+H2(v=0, j=0−3)→HD(v′, j′)+H reaction: Differential and state-to-state cross sections in the 0.35–1.10 eV collision energy range. Chem Phys Lett 1990. [DOI: 10.1016/0009-2614(90)85195-i] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Harrison JA, Isakson LJ, Mayne HR. The effect of reagent rotation on chemical reactivity: F+H2revisited. J Chem Phys 1989. [DOI: 10.1063/1.457359] [Citation(s) in RCA: 22] [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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Aoiz F, Herrero V, Sáez V. Effect of rotation on the reactivity of the D+H2(ν=1)→DH+H system at translational energies 0.25, 0.35 and 0.45 eV. Chem Phys Lett 1989. [DOI: 10.1016/s0009-2614(89)87073-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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