Resonantly-enhanced Two-photon Ionization and Mass-Analyzed Threshold Ionization (MATI) Spectroscopy of 2-Hydroxypyridine

Bulletin of the Korean chemical society

Kyo-Won Choi¹  Young S. Choi¹  Sang Kyu Kim¹  Daehyun Lee¹  Sun Jong Baek¹ 

关键词: 2-Hydroxypyridine;    Mass-analyzed;    Threshold;    Ionization;    Spectroscopy.;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Mass-analyzed threshold ionization (MATI) spectra of 2-hydroxypyridines existing as lactims (2-pyridinol) in a molecular beam are obtained via (1+1`) two-photon process to give accurate ionization energies of 8.9344 �?0.0005 and 8.9284 �? 0.0005 eV for 2-pyridinol (2Py-OH) and its deuterated analogue (2Py-OD), respectively. Resonantly-enhanced two-photon ionization spectra of these compounds are also presented to give vibrational structures of their S₁ states. Vibrational frequencies of 2Py-OH and 2Py-OD in ionic ground states are accurately determined from MATI spectra taken via various S₁ intermediate states, and associated vibrational modes are assigned with the aid of ab initio calculations.

【 授权许可】

Unknown