The UV Absorption Spectrum of the Simplest Criegee Intermediate CH2OO

Wei-Lun Ting (丁偉倫)1, Ying-Hsuan Chen (陳映璇)1, Wen Chao (趙彣)1,2, Shu-Yi Meng (孟書怡) 1,3, Jim Jr-Min Lin (林志民)*1,2,4
1 Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan
2 Department of Chemistry, National Taiwan University, Taipei, Taiwan
3 Department of Chemistry, National Chung Hsing University, Taichung, Taiwan
4 Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
Ozonolysis plays an important role in removal of unsaturated hydrocarbons in atmosphere. It is believed to produce Criegee intermediates.
The UV spectrum of CH2OO has significant structures.
We determined its absorption cross section at 352 nm to be
1.17 x 10-17 cm2.
We observed the kinetics involving rxn (2) and rxn (3).