Department of Chemistry, Sichuan Normal University, Chengdu 610066, China;
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;
Southwestern Institute of Nuclear Physics and Chemistry, Mianyang 621900, China;
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;
Southwestern Institute of Nuclear Physics and Chemistry, Mianyang 621900, China;
Southwestern Institute of Nuclear Physics and Chemistry, Mianyang 621900, China;
PuOn+; molecular ions; potential energy function stability;