Slow ion interaction with N-methylglycine and N-acetylglycine

29th International Conference on Photonic, Electronic, and Atomic Collisions

Kocisek, Jaroslav^1 ; Tendero, Sergio Diaz^2 ; Piekarskh, Dariusz Grzegorz^2 ; Delaunay, Rudy^1 ; Huber, Bernd A.^1 ; Adoui, Lamri^1 ; Alcami, Manuel^2 ; Martín, Fernando^2,3,4 ; Rousseau, Patrick^1 ; Domaracka, Alicja^1 ; Kopyra, Janina^5

CIMAP, UMR 6252 (CEA/CNRS/ENSICAEN/Universite de Caen Basse-Normandie), Bd. Henri Becquerel, BP 5133, Caen Cedex 5

14070, France^1

Departamento de Química, Universidad Autónoma de Madrid, Modulo 13, Madrid

28049, Spain^2

Instituto Madrileno de Estudios Avanzados en Nanociencias (IMDEA-Nanociencia), Cantoblanco, Madrid

28049, Spain^3

Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, Madrid

28049, Spain^4

Chemistry Department, Siedlce University, 3 Maja 54, Siedlce

08-110, Poland^5

关键词: Electron exchange;    Gasphase;    Glycine molecule;    Ion interactions;    N acetyls;    N-methylglycine;    Peptide bonds;    Tautomerizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/3/032054/pdf
DOI  :  10.1088/1742-6596/635/3/032054

来源: IOP

【 摘 要 】

N-acetyl glycine and N-methyl glycine molecules in the gas phase are ionized by electron exchange with slow O6+ions at an energy of 48 keV. After ionization, the methyl and acetyl substituted glycines dissociate into fragments analogous to that resulting from ionization and fragmentation of amino acids and peptides, respectively. N-acetylglycine which contains a peptide bond also effectively tautomerizes to the diol form. Such tautomerization is typical for amino acids, however, we show that the tautomerization mechanism of the N-acetylglycine is different.