Steric Effect in Threshold Photoionization Dissociations of Serine Conformers
Chemical Physics
2008-07-02 v1 Biological Physics
Abstract
Steric effect in the threshold dissociative ionizations of serine conformers [CH2OH-C\alphaH(NH2)-C\betaOOH] is revealed by high-level ab initio calculations combined with our newly developed infrared laser desorption / tunable VUV photoionization mass spectrometry. We find that near the ionization thresholds the C\alpha-C\beta and C\alpha-C bonds are selectively broken for the respective cationic conformers, yielding the different fragments. Novel dynamic processes, proton transfer and reorientation between the predissociative fragments, are involved in the threshold photoionization dissociations.
Keywords
Cite
@article{arxiv.0807.0062,
title = {Steric Effect in Threshold Photoionization Dissociations of Serine Conformers},
author = {Shan Xi Tian and Jinlong Yang and Hai-Bei Li and Yang Pan and Taichang Zhang and Liusi Sheng},
journal= {arXiv preprint arXiv:0807.0062},
year = {2008}
}
Comments
10 pages, 3 figures, and 2 tables. submitted