TY  - JOUR
A1  - Schleier, Domenik
A1  - Reusch, Engelbert
A1  - Lummel, Lisa
A1  - Hemberger, Patrick
A1  - Fischer, Ingo
T1  - Threshold photoelectron spectroscopy of IO and IOH
JF  - ChemPhysChem
N2  - Iodine oxides appear as reactive intermediates in atmospheric chemistry. Here, we investigate IO and HOI by mass‐selective threshold photoelectron spectroscopy (ms‐TPES), using synchrotron radiation. IO and HOI are generated by photolyzing iodine in the presence of ozone. For both molecules, accurate ionization energies are determined, 9.71±0.02 eV for IO and 9.79±0.02 eV for HOI. The strong spin‐spin interaction in the 3Σ− ground state of IO+ leads to an energy splitting into the Ω=0 and Ω=±1 sublevels. Upon ionization, the I−O bond shortens significantly in both molecules; thus, a vibrational progression, assigned to the I−O stretch, is apparent in both spectra.
KW  - ionization potential
KW  - radicals
KW  - reactive intermediates
KW  - photolysis
KW  - synchrotron radiatoren
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-204751
VL  - 20
IS  - 19
ER  -