Open AccessPotential energy curves and spectroscopic properties of SnO (X1Σ+, a3Π and A1Π) molecule
Author(s) -
Dou Huang,
Fanhou Wang,
Junsheng Yang,
Mingjie Wan,
Qilong Cao,
Mingchao Yang
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.083102
Subject(s) - atomic physics , excited state , potential energy , bond dissociation energy , dissociation (chemistry) , physics , molecule , diatomic molecule , basis (linear algebra) , atom (system on chip) , configuration interaction , multireference configuration interaction , molecular physics , quantum mechanics , chemistry , geometry , mathematics , computer science , embedded system
Potential energy curves (PECs) for the ground state and the second excited state (a3Π and A1Π) of SnO molecule are calculated by using the multi-reference configuration interaction method (MRCI) and also considering Davidson correction’ multi-reference configuration interaction method with aug-cc-pvTZ basis for O atom, aug-cc-pvTZ-PP basis for Sn atom, respectively. On the basis of the PECs, the Re, ωe, ωeχe, Be, Te and De are obtained. The symmetries and dissociation limits for these electronic states are determined by group theory. The results show that three electronic states are dissociated along the same channel, Sn (3P)+O (3P). And then the PECs are fitted by using level program. The spectroscopic constants are determined according to fitted results, which shows that MRCI results are in good agreement with the experimental values. By solving the radial Schrödinger equation of nuclear motion, the vibration levels can be obtained, molecular constant (Bv and Dv) are reported for the first time at J=0.