|
1
|
ZHANG H, SMITH SC. CALCULATION OFHO2DENSITY OF STATES ON THREE POTENTIAL ENERGY SURFACES. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2011. [DOI: 10.1142/s0219633610005918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Density of states (DOS) in both bound and unimolecular dissociation regime for HO2system have been calculated quantum mechanically by Lanczos homogeneous filter diagonalization (LHFD) method. Three potential energy surfaces are explored and the results are contrasted for the total angular momentum J = 0 density of states. While two ab initio potential energy surfaces (PESs) (TU PES, J Chem Phys, 115:3621 and XXZLG PES, J Chem Phys122:244) produce the DOSs which are in fairly good agreement, the semi-empirical double many-body expansion (DMBE) IV PES (J Phys Chem94:8073) generates the much higher DOSs in higher energy range. The quantum mechanical DOSs are also compared with Troe et al.'s results from harmonic density, semiclassical density and their early density of states on the same TU ab initio surface.
Collapse
Affiliation(s)
- H. ZHANG
- The University of Queensland, Australian Institute for Bioengineering and Nanotechnology, Centre for Computational Molecular Science, Brisbane, Qld 4072, Australia
| | - S. C. SMITH
- The University of Queensland, Australian Institute for Bioengineering and Nanotechnology, Centre for Computational Molecular Science, Brisbane, Qld 4072, Australia
| |
Collapse
|
|
2
|
Keçeli M, Shiozaki T, Yagi K, Hirata S. Anharmonic vibrational frequencies and vibrationally-averaged structures of key species in hydrocarbon combustion: HCO+, HCO, HNO, HOO, HOO–, CH3 +, and CH3. Mol Phys 2010. [DOI: 10.1080/00268970902889626] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
|
3
|
Strekalov ML. Simple models of the density of vibrational states in polyatomic molecules. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2010. [DOI: 10.1134/s1990793110040019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
|
4
|
Troe J, Ushakov VG. Anharmonic Rovibrational Numbers and Densities of States for HO2, H2CO, and H2O2. J Phys Chem A 2009; 113:3940-5. [DOI: 10.1021/jp8101964] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Troe
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany
| | - V. G. Ushakov
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany
| |
Collapse
|
|
5
|
|
|
6
|
Troe J, Ushakov VG. Quantum capture, adiabatic channel, and classical trajectory study of the high pressure rate constant of the reaction H+O2→HO2 between 0 and 5000K. J Chem Phys 2008; 128:204307. [DOI: 10.1063/1.2917201] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
|
7
|
Simplified models for anharmonic numbers and densities of vibrational states. Part III: Resonance states of HO2. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.02.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
|
8
|
Troe J, Ushakov VG. SACM/CT Study of the dissociation/recombination dynamics of hydrogen peroxide on an ab initio potential energy surface : Part II. Specific rate constants k(E,J), thermal rate constants k∞(T), and lifetime distributions. Phys Chem Chem Phys 2008; 10:3915-24. [DOI: 10.1039/b803320j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
|
9
|
Fernandes RX, Luther K, Troe J, Ushakov VG. Experimental and modelling study of the recombination reaction H + O2 (+M) → HO2 (+M) between 300 and 900 K, 1.5 and 950 bar, and in the bath gases M = He, Ar, and N2. Phys Chem Chem Phys 2008; 10:4313-21. [DOI: 10.1039/b804553d] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|