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First Experimental Observation of the CH 3 Se Radical
Author(s) -
Sun Qiao,
Li Zhen,
Zeng Xiaoqing,
Wang Weigang,
Sun Zheng,
Ge Maofa,
Wang Dianxun,
Mok Daniel Kam Wah,
Chau Footim
Publication year - 2005
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200500150
Subject(s) - ionization energy , adiabatic process , chemistry , ionization , atomic physics , ground state , gas phase , molecular beam , x ray photoelectron spectroscopy , symmetry (geometry) , gaussian , analytical chemistry (journal) , molecular physics , computational chemistry , molecule , nuclear magnetic resonance , physics , ion , thermodynamics , organic chemistry , geometry , mathematics
A continuously flowing CH 3 Se radical beam is generated in the gas phase for the first time by direct pyrolysis of CH 3 SeSeCH 3 in the presence of a 15 Å molecular sieve. Photoelectron spectroscopic measurements as well as DFT and Gaussian‐2 calculations show that the CH 3 Se radical has an electronic X̃ 2 E ground state with C 3 v symmetry and a first adiabatic ionization energy of 8.78 eV (see picture).
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