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Ulenikov O, Bekhtereva E, Gromova O, Kakaulin A, Sydow C, Bauerecker S. Improved Theory of the Effective Dipole Moments and Absolute Line Strengths of the XY 2 Asymmetric Top Molecules in the X2B1 Doublet Electronic States. Int J Mol Sci 2023; 24:12734. [PMID: 37628914 PMCID: PMC10454483 DOI: 10.3390/ijms241612734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
A new effective dipole moment model for the XY2 (C2v-symmetry) molecule in a doublet electronic state is derived that includes (as special cases) all currently known models of effective dipole moments for such types of molecules, and allows us to take into account the influence of spin-rotation interactions on the effective dipole moment operator that were not considered in the preceding studies. Necessary for the analysis of absolute line strengths, the matrix elements of this dipole moment operator are derived. A comparison with the previous analog models is made and discussed. The efficiency of the obtained results is illustrated, which have been applied to a set of the "forbidden" ΔKa=2 transitions of the ν3 band of the OClO free radical molecule.
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Affiliation(s)
- Oleg Ulenikov
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia; (E.B.); (O.G.); (A.K.)
| | - Elena Bekhtereva
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia; (E.B.); (O.G.); (A.K.)
| | - Olga Gromova
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia; (E.B.); (O.G.); (A.K.)
| | - Aleksei Kakaulin
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia; (E.B.); (O.G.); (A.K.)
| | - Christian Sydow
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D-38106 Braunschweig, Germany;
| | - Sigurd Bauerecker
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D-38106 Braunschweig, Germany;
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Ulenikov ON, Bekhtereva ES, Gromova OV, Kakaulin AN, Merkulova MA, Sydow C, Berezkin KB, Bauerecker S. High resolution spectroscopy of asymmetric top molecules in nonsinglet electronic states: the ν 3 fundamental of chlorine dioxide ( 16O 35Cl 16O) free radical in the X 2B 1 electronic ground state. Phys Chem Chem Phys 2023; 25:6270-6287. [PMID: 36762534 DOI: 10.1039/d2cp05604f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Highly resolved spectra of the 16O35Cl16O isotopologue of chlorine dioxide were recorded with a Bruker IFS 125HR Fourier transform infrared spectrometer in the region of the ν3 band. The analysis was made in the frame of the spin-rotational effective Hamiltonian (in A-reduction and Ir-representation) taking into account spin-rotational coupling operators up to the sixth order and the corresponding reduction of the Hamiltonian. The mathematical description of the ro-vibrational spectra was implemented to the specially created computer program ROVDES. Under the present experimental conditions, we were able to assign more than 5200 spin-rotational transitions to the ν3 band. This number is 2.4 times higher compared to the previous studies available from the literature. The vibrational ground state parameters were improved, and the 2220 upper spin-rotation-vibration energy levels were determined and used as initial data in the inverse spectroscopic problem with the derived effective spin-rotational Hamiltonian. A total of 37 fitted parameters were determined (22 rotational and centrifugal parameters and 15 parameters of spin-rotation coupling). The appearance of strong Coriolis resonance interactions between the (001) and (100) vibrational states in the sets of (001)[N,Ka = 9], (001)[N,Ka = 17], (001)[N,Ka = 18] and (001)[N,Ka = 19] spin-rotation-vibration levels was experimentally observed for the first time and explained. The drms = 1.4 × 10-4 cm-1 reproduction of the initial "experimental" upper ro-vibrational energy values was achieved which is considerably better compared to the use of parameters from a previous study ([J. Ortigoso et al., J. Mol. Spectrosc., 1992, 155, 25-43]).
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Affiliation(s)
- Oleg N Ulenikov
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Elena S Bekhtereva
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Olga V Gromova
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Aleksei N Kakaulin
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Maria A Merkulova
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Christian Sydow
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D-38106, Braunschweig, Germany.
| | - Kirill B Berezkin
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D-38106, Braunschweig, Germany.
| | - Sigurd Bauerecker
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D-38106, Braunschweig, Germany.
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Ulenikov ON, Bekhtereva ES, Gromova OV, Kakaulin AN, Sydow C, Berezkin K, Bauerecker S. High resolution spectroscopy of the ν 1+ν 3 band of the 35ClO 2 free radical: Spin-rotation-vibration interactions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 278:121379. [PMID: 35605358 DOI: 10.1016/j.saa.2022.121379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/05/2022] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
The high resolution spectrum of the ν1+ν3 band of the 35ClO2 free radical was recorded with a Bruker IFS 125HR Fourier transform infrared spectrometer and theoretically analysed with an improved theoretical basis including the reduced effective spin-rotation Hamiltonian (which takes into account sixth order operators describing spin-rotational interactions) and a newly created computer code ROVDES for the ro-vibrational spectra of open-shell free radicals. About 2600 spin-ro-vibrational transitions with the values Nmax=59 and Kamax=17 (being about 2.4 times higher in comparison with the number of assigned transitions known in the literature) were assigned to the ν1+ν3 band of 35ClO2 and 1049 spin-ro-vibrational energies (produced only from unblended non-saturated and not very weak experimental lines) of the (101) upper vibrational state were obtained. A set of 30 varied parameters of the effective spin-rotation-vibration Hamiltonian of the (101) vibrational state (vibrational energy, 17 rotational and centrifugal distortion parameters and 12 are spin-rotational ones) was determined from the weighted fit of parameters of the effective spin-rotational Hamiltonian in A-reduction and Ir-representation. The obtained set of parameters reproduces the initial 1049 "experimental" upper state energies with the drms=2.5×10-4 cm-1 which is close to the experimental uncertainty of the recorded spectra and is almost 70 times higher in comparison with the analogous reproduction of the same initial upper energies with the use of parameters from (J.Mol.Spectrosc.,158,347-356(1993)).
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Affiliation(s)
- O N Ulenikov
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - E S Bekhtereva
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia
| | - O V Gromova
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia
| | - A N Kakaulin
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia
| | - C Sydow
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D - 38106, Braunschweig, Germany
| | - K Berezkin
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D - 38106, Braunschweig, Germany
| | - S Bauerecker
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D - 38106, Braunschweig, Germany.
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Ulenikov ON, Bekhtereva ES, Gromova OV, Quack M, Berezkin KB, Sydow C, Bauerecker S. High resolution ro-vibrational analysis of molecules in doublet electronic states: the ν1 fundamental of chlorine dioxide ( 16O 35Cl 16O) in the X2B1 electronic ground state. Phys Chem Chem Phys 2021; 23:4580-4596. [PMID: 33620042 DOI: 10.1039/d0cp05515h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report the spectrum of the ν1 fundamental of chlorine dioxide centered in the infrared atmospheric window at 945.592 cm-1 measured with essentially Doppler limited resolution at an instrumental line width of 0.001 cm-1 using the Zürich prototype ZP2001 Bruker IFS 125 HR Fourier transform infrared spectrometer. The ro-vibrational line analysis is carried out with an improved effective Hamiltonian and a newly developed computer code ROVDES for the ro-vibrational spectra of open-shell free radical molecules including spin-rotation interactions. Accurate values of rotational, centrifugal and spin-rotational parameters were determined for 16O35Cl16O in the vibronic ground state X2B1 from more than 3500 ground state combination differences. The 7239 assigned transitions for the ν1 fundamental with Nmax = 76 and Kmaxa = 26 provide a set of 32 accurate effective Hamiltonian parameters for the ν1 fundamental (v1v2v3) = (100) (21 rotational and centrifugal distortion parameters and 11 spin-rotational interaction parameters). This effective Hamiltonian (A - reduction and Ir - representation) reproduces 1703 upper state energies from the experiment with a root-mean-square deviation drms = 1.67 × 10-4 cm-1 and the 7239 transition wavenumbers with drms = 3.45 × 10-4 cm-1. Our results provide a considerable improvement over previous results with which we compare and should provide a benchmark for theoretical studies with applications to atmospheric spectroscopy and laser chemistry, which are discussed in relation to our spectra.
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Affiliation(s)
- Oleg N Ulenikov
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Elena S Bekhtereva
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Olga V Gromova
- Research School of High-Energy Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Martin Quack
- Physical Chemistry, ETH Zürich, CH-8093, Zürich, Switzerland.
| | - Kirill B Berezkin
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D-38106, Braunschweig, Germany.
| | - Christian Sydow
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D-38106, Braunschweig, Germany.
| | - Sigurd Bauerecker
- Institut für Physikalische und Theoretische Chemie, Technische Universität Braunschweig, D-38106, Braunschweig, Germany.
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Basis Set Effects in the Description of the Cl-O Bond in ClO and XClO/ClOX Isomers (X = H, O, and Cl) Using DFT and CCSD(T) Methods. J CHEM-NY 2019. [DOI: 10.1155/2019/4057848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The performance of a group of density functional methods of progressive complexity for the description of the ClO bond in a series of chlorine oxides was investigated. The simplest ClO radical species and the two isomeric structures XClO/ClOX for each X = H, Cl, and O were studied using the PW91, TPSS, B3LYP, PBE0, M06, M06-2X, BMK, and B2PLYP functionals. Geometry optimizations and reaction enthalpies and enthalpies of formation for each species were calculated using Pople basis sets and the (aug)-cc-pVnZ Dunning sets, with n = D, T, Q, 5, and 6. For the calculation of enthalpies of formation, atomization and isodesmic reactions were employed. Both the precision of the methods with respect to the increase of the basis sets, as well as their accuracy, were gauged by comparing the results with the more accurate CCSD(T) calculations, performed using the same basis sets as for the DFT methods. The results obtained employing composite chemical methods (G4, CBS-QB3, and W1BD) were also used for the comparisons, as well as the experimental results when they are available. The results obtained show that error compensation is the key for successful description of molecular properties (geometries and energies) by carefully selecting the method and basis sets. In general, expansion of the one-electron basis set to the limit of completeness does not improve results at the DFT level, but just the opposite. The enthalpies of formation calculated at the CCSD(T)/aug-cc-pV6Z for the species considered are generally in agreement with experimental determinations and the most accurate theoretical values. Different sources of error in the calculations are discussed in detail.
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ZHU ZILIANG, WANG MEISHAN, YANG CHUANLU, MA MEIZHONG, LIU WENWANG. DENSITY FUNCTIONAL THEORY STUDIES OF SPECTROSCOPIC CONSTANTS AND ANHARMONIC FORCE FIELD OF O35ClO. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2013. [DOI: 10.1142/s0219633612501179] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The equilibrium structure, spectroscopy constants and anharmonic force field of O35ClO have been calculated at B3PW91 and B3LYP levels of theory with two basis sets 6-311++G(2df,2pd) and 6-311++G(3df,3pd) , respectively. The computed geometries, dipole moment, rotational constants, vibration–rotation interaction constants, vibrational band origins, anharmonic constants, quartic, and sextic centrifugal distortion constants are compared with the available experimental data. The cubic and quartic force constants are predicted. The calculated results show that the B3PW91 results are in excellent agreement with experiment and represent a substantial improvement over the results obtained from B3LYP.
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Affiliation(s)
- ZILIANG ZHU
- School of Physics and Optoelectronics Engineering, Key Laboratory of Molecular Design and Materials Synthesis of Shandong Province, Ludong University, Yantai 264025, P. R. China
| | - MEISHAN WANG
- School of Physics and Optoelectronics Engineering, Key Laboratory of Molecular Design and Materials Synthesis of Shandong Province, Ludong University, Yantai 264025, P. R. China
| | - CHUANLU YANG
- School of Physics and Optoelectronics Engineering, Key Laboratory of Molecular Design and Materials Synthesis of Shandong Province, Ludong University, Yantai 264025, P. R. China
| | - MEIZHONG MA
- School of Physics and Optoelectronics Engineering, Key Laboratory of Molecular Design and Materials Synthesis of Shandong Province, Ludong University, Yantai 264025, P. R. China
| | - WENWANG LIU
- School of Physics and Optoelectronics Engineering, Key Laboratory of Molecular Design and Materials Synthesis of Shandong Province, Ludong University, Yantai 264025, P. R. China
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Pan C, Liang X, Wang R, Tao S, Liang J, Cui Z. A combined ab initio and Franck–Condon simulation study of the photodetachment spectrum of the anion. COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2011.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Wang H, Wang M, Yang C, Ma M. The SAC/SAC-CI studies of ground and low-lying electronic excited states of OClO, OClO+ and OClO−. COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2011.01.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tarczay G, Szalay PG, Gauss J. First-Principles Calculation of Electron Spin-Rotation Tensors. J Phys Chem A 2010; 114:9246-52. [DOI: 10.1021/jp103789x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- György Tarczay
- Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518, Budapest 112, Hungary, Laboratory of Theoretical Chemistry, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518, Budapest 112, Hungary, and Institut für Physikalische Chemie, Universität Mainz, D-55099 Mainz, Germany
| | - Péter G. Szalay
- Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518, Budapest 112, Hungary, Laboratory of Theoretical Chemistry, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518, Budapest 112, Hungary, and Institut für Physikalische Chemie, Universität Mainz, D-55099 Mainz, Germany
| | - Jürgen Gauss
- Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518, Budapest 112, Hungary, Laboratory of Theoretical Chemistry, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518, Budapest 112, Hungary, and Institut für Physikalische Chemie, Universität Mainz, D-55099 Mainz, Germany
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Zheng H, Zhang X, Li R, Liang J, Cui Z. The geometry of the chlorine dioxide anion ClO2-: Ab initio calculation and Franck–Condon analysis. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.10.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Luis JM, Kirtman B, Christiansen O. A variational approach for calculating Franck-Condon factors including mode-mode anharmonic coupling. J Chem Phys 2006; 125:154114. [PMID: 17059246 DOI: 10.1063/1.2360944] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
We have implemented our new procedure for computing Franck-Condon factors utilizing vibrational configuration interaction based on a vibrational self-consistent field reference. Both Duschinsky rotations and anharmonic three-mode coupling are taken into account. Simulations of the first ionization band of ClO(2) and C(4)H(4)O (furan) using up to quadruple excitations in treating anharmonicity are reported and analyzed. A developer version of the MIDASCPP code was employed to obtain the required anharmonic vibrational integrals and transition frequencies.
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Affiliation(s)
- Josep M Luis
- Institute of Computational Chemistry, University of Girona, Campus de Montilivi, Girona, 17071 Catalonia, Spain.
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Luis JM, Bishop DM, Kirtman B. A different approach for calculating Franck–Condon factors including anharmonicity. J Chem Phys 2004; 120:813-22. [PMID: 15267917 DOI: 10.1063/1.1630566] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An efficient new procedure for calculating Franck-Condon factors, based on the direct solution of an appropriate set of simultaneous equations, is presented. Both Duschinsky rotations and anharmonicity are included, the latter by means of second-order perturbation theory. The critical truncation of basis set is accomplished by a build-up procedure that simultaneously removes negligible vibrational states. A successful test is carried out on ClO2 for which there are experimental data and other theoretical calculations.
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Affiliation(s)
- Josep M Luis
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA
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Schäfer M, Ha TK, Bauder A. Microwave spectrum, structure, and internal motion of the open-shell van der Waals complex Ar–ClO2. J Chem Phys 2003. [DOI: 10.1063/1.1612921] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
Low pressure flash thermolysis of different precursor molecules containing-ClO, -ClO3 or -OClO3 yield, when highly diluted in Ne or O2 and subsequent quenching of the products in a matrix at 5 or 15 K, ClOx (x = 1, 3, 4) radicals, respectively. If Ne or O2 gas is directed over solid ClO2 at -120 degrees C and the resulting gas mixtures are immediately deposited as a matrix, a high fraction of (OClO)2 is trapped. This enables recording of IR and UV spectra of weakly bonded (OClO)2 dimers and detailed studying of their photochemistry. For Ne or O2 matrix isolated ClO radicals the vibrational wavenumbers and electronic transitions are only slightly affected compared with the gas phase. In this study strong evidence is found for long lived ClO in the electronically excited 2 [symbol: see text] 1/2 state. A comprehensive IR study of Ne matrix isolated ClO3 (fundamentals at 1081, 905, 567, 476 cm-1) yield i) a reliable force field; ii) a OClO bond angle of alpha e = 113.8 +/- 1 degrees and iii) a ClO bond length of 148.5 +/- 2 pm in agreement with predicted data from quantum chemical calculations. The UV/Vis spectrum of ClO3 isolated in a Ne matrix (lambda max at 32,100 and 23,150 cm-1) agrees well with the photoelectron spectrum of ClO3- and theoretical predictions. The origin of the structured high energy absorption is at 22,696 cm-1 and three fundamentals (794, 498, 280 cm-1) are detected in the C2E state. By photolysis of ClO3 with visible light the complex ClO.O2 with ClO in the 2 [symbol: see text] 1/2 state is formed. In an extended spectroscopic study of the elusive ClO4 radical, isolated in a Ne or O2 matrix, three additional IR bands, a complete UV spectrum and a strong interaction with O2 are found. This leads to the conclusion that ClO4 exhibits C2v or Cs symmetry with a shallow potential minimum and forms with O2 the previously unknown peroxy radical O3ClO-O2. All these results are discussed in the context of recent developments in the chemistry and spectroscopy of the important and interesting ClOx (x = 1-4) family of radicals.
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Affiliation(s)
- Rodion Kopitzky
- Fakultät 4, Anorganische Chemie Gerhard-Mercator Universität Duisburg, Lotharstrasse 1 47048 Duisburg, Germany
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Chorny I, Vieceli J, Benjamin I. Molecular dynamics study of the vibrational relaxation of OClO in bulk liquids. J Chem Phys 2002. [DOI: 10.1063/1.1471558] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Chorny I, Vieceli J, Benjamin I. Molecular dynamics study of the photodissociation of OClO in bulk liquids. J Chem Phys 2002. [DOI: 10.1063/1.1471557] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Müller HSP, Cohen EA. The molecular properties of chlorosyl fluoride, FClO, as determined from the ground-state rotational spectrum. J Chem Phys 2002. [DOI: 10.1063/1.1433002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Delmdahl RF, Parker DH, Eppink ATJB. Short-wavelength photolysis of jet-cooled OClO(2A2 ν1>20)→ClO(X 2ΠΩ,v,J)+O(3PJ). J Chem Phys 2001. [DOI: 10.1063/1.1367393] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Mok DKW, Lee EPF, Chau FT, Wang D, Dyke JM. A new method of calculation of Franck–Condon factors which includes allowance for anharmonicity and the Duschinsky effect: Simulation of the He I photoelectron spectrum of ClO2. J Chem Phys 2000. [DOI: 10.1063/1.1290124] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Alcami M, Mó O, Yáñez M, Cooper IL. The performance of density-functional theory in challenging cases: Halogen oxides. J Chem Phys 2000. [DOI: 10.1063/1.481214] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Müller H. Rotational and vibrational spectra of chloryl fluoride, FClO 2 : nuclear quadrupole, spin-rotation, and shielding tensors and the harmonic force field. J Mol Struct 2000. [DOI: 10.1016/s0022-2860(99)00261-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Müller HSP, Cohen EA, Christen D. The rotational spectrum of chloryl chloride, ClClO2, in its ground vibrational state. J Chem Phys 1999. [DOI: 10.1063/1.479179] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Peterson KA. Accurate ab initio near-equilibrium potential energy and dipole moment functions of the X 2B1 and first excited 2A2 electronic states of OClO and OBrO. J Chem Phys 1998. [DOI: 10.1063/1.477558] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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