The ionized states of 6,6-dimethylfulvene; the vibrational energy levels studied by photoionization, configuration interaction and density functional calculations
Abstract
A new synchrotron-based photoionization spectrum of 6,6-dimethylfulvene shows significant vibrational fine structure (VFS) which was successfully analysed by Franck-Condon (FC) methods. The sequence of ionic states in the range 7 to 19 eV has been determined by symmetry adapted cluster configuration interaction and Roothaan-Hartree-Fock open shell methods, leading to reliable theoretical values for both the calculated vertical and adiabatic ionization energies. The FC profile for the lowest ionization energy (IE1, X2A2) shows extensive VFS which is analysed successfully. The second IE (A2B1) shows truncated structure owing to overlap with IE1.
Citation
Palmer , M H , Coreno , M , de Simone , M , Grazioli , C , Jones , N C , Hoffmann , S V & Aitken , R A 2022 , ' The ionized states of 6,6-dimethylfulvene; the vibrational energy levels studied by photoionization, configuration interaction and density functional calculations ' , Chemical Physics Letters , vol. 796 , 139558 . https://doi.org/10.1016/j.cplett.2022.139558
Publication
Chemical Physics Letters
Status
Peer reviewed
ISSN
0009-2614Type
Journal article
Collections
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