Research output: Contribution to journal › Article › peer-review
Calculation of Vibrational Parameters of an Electride-Like Molecule Li4C4H2N2 and the Pyridazine Molecule C4H4N2. / Bulychev, V. P.; Buturlimova, M. V.
In: OPTICS AND SPECTROSCOPY, Vol. 127, No. 2, 2019, p. 218-224.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Calculation of Vibrational Parameters of an Electride-Like Molecule Li4C4H2N2 and the Pyridazine Molecule C4H4N2
AU - Bulychev, V. P.
AU - Buturlimova, M. V.
PY - 2019
Y1 - 2019
N2 - Abstract: The frequencies and intensities are calculated for fundamental transitions between vibrational states of an electride-like molecule Li4C4H2N2 that can be obtained from the pyridazine molecule C4H4N2 by replacing two hydrogen atoms by lithium atoms and adding two other lithium atoms to nitrogen atoms. Spectral parameters of Li4C4H2N2 are calculated in the harmonic and anharmonic approximations using the MP2, CCSD, and QCISD methods with the sets of atomic functions aug-cc-pVDZ and aug-cc-pVTZ. For comparison the absorption spectrum of a pyridazine molecule was calculated in the same approximations. The calculations showed that, upon introducing lithium atoms into the pyridazine molecule, new intense bands appear and the spectral parameters of the bands present in the pyridazine spectrum are significantly changed. The results obtained may be useful for spectroscopic observation and identification of the new c-ompound.
AB - Abstract: The frequencies and intensities are calculated for fundamental transitions between vibrational states of an electride-like molecule Li4C4H2N2 that can be obtained from the pyridazine molecule C4H4N2 by replacing two hydrogen atoms by lithium atoms and adding two other lithium atoms to nitrogen atoms. Spectral parameters of Li4C4H2N2 are calculated in the harmonic and anharmonic approximations using the MP2, CCSD, and QCISD methods with the sets of atomic functions aug-cc-pVDZ and aug-cc-pVTZ. For comparison the absorption spectrum of a pyridazine molecule was calculated in the same approximations. The calculations showed that, upon introducing lithium atoms into the pyridazine molecule, new intense bands appear and the spectral parameters of the bands present in the pyridazine spectrum are significantly changed. The results obtained may be useful for spectroscopic observation and identification of the new c-ompound.
KW - electrides
KW - LiCHN
KW - pyridazine
KW - Li4C4H2N2
UR - http://www.scopus.com/inward/record.url?scp=85073060740&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/calculation-vibrational-parameters-electridelike-molecule-li4c4h2n2-pyridazine-molecule-c4h4n2
U2 - 10.1134/S0030400X19080083
DO - 10.1134/S0030400X19080083
M3 - Article
AN - SCOPUS:85073060740
VL - 127
SP - 218
EP - 224
JO - OPTICS AND SPECTROSCOPY
JF - OPTICS AND SPECTROSCOPY
SN - 0030-400X
IS - 2
ER -
ID: 48955089