PSI VUV About Database

ms-TPES 8.25-12.5 eV

Type Mass-selected threshold photoelectron spectrum
Further references 10.1063/1.3082016
10.1016/j.nima.2009.08.069
T / K 800
Source Pyrolysis
Resolution / meV 5
Flux normalization No
Comments The precursor S2(CH3)2 was pyrolysed and the newly created species were analysed. Mass resolution 200, field: 213 V/cm, i2PEPICO (CRF) setup
Date & facility 2023 SLS VUV
Date entered 2024-10-30
EK

FC simulation X+ 3A2 state

Type Franck-Condon simulation
Further references The simulation was made with EzSpectrum. The calculations were performed with Gaussian16 on G4 niveau.
T / K 300
Level of theory G4
Convolution FWHM / meV 25
0-0 transition / eV 9.25
Date & facility 2024 Universität Würzburg
Date entered 2024-10-30
EK

FC simulation b+ 3A2 state

Type Franck-Condon simulation
Further references The simulation was made with EzSpectrum. The calculations were performed with Orca 5.0.3 on TDDFT niveau with a wB97x-D3 functional.
T / K 300
Level of theory TDDFT wB97x-D3/cc-pVTZ
Convolution FWHM / meV 25
0-0 transition / eV 10.22
Comments The state was hard to optimize since the a+ is very close and is prone to strong Jahn-Teller distortion. Additionally, a conical intersection is also possible to the HSCH2 isomer. In Orca the command FollowIRoot had to be used for reasonable results.
Date & facility 2024 Universität Würzburg
Date entered 2024-10-30
EK