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200 1 _aHigh resolution ro-vibrational analysis of molecules in doublet electronic states: the ν1 fundamental of chlorine dioxide (16O35Cl16O) in the X2B1 electronic ground state
_fO. N. Ulenekov (Ulenikov), E. S. Bekhtereva, O. V. Gromova [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 144 tit.]
330 _aWe 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.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tPhysical Chemistry Chemical Physics
463 _tVol. 23, iss. 8
_v[P. 4580-4596]
_d2021
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
701 1 _aUlenekov (Ulenikov)
_bO. N.
_cphysicist
_cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences
_f1949-
_gOleg Nikolaevich
_2stltpush
_3(RuTPU)RU\TPU\pers\34331
701 1 _aBekhtereva
_bE. S.
_cphysicist
_cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences
_f1974-
_gElena Sergeevna
_2stltpush
_3(RuTPU)RU\TPU\pers\34450
701 1 _aGromova
_bO. V.
_cphysicist
_cProfessor of Tomsk Polytechnic University, Candidate of physical and mathematical sciences
_f1982-
_gOlga Vasilievna
_2stltpush
_3(RuTPU)RU\TPU\pers\34333
701 1 _aQuack
_bM.
_gMartin
701 1 _aSydow
_bCh.
_gChristian
701 1 _aBeryozkin
_bK. B.
_cphysicist
_ctechnician Tomsk Polytechnic University
_f1987-
_gKirill Borisovich
_2stltpush
_3(RuTPU)RU\TPU\pers\34702
701 1 _aBauerecker
_bS.
_gSigurd
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИсследовательская школа физики высокоэнергетических процессов
_c(2017- )
_h8118
_2stltpush
_3(RuTPU)RU\TPU\col\23551
801 2 _aRU
_b63413507
_c20210325
_gRCR
856 4 _uhttps://doi.org/10.1039/D0CP05515H
942 _cCF