Ionization energies of Li n X (n = 2, 3; X = Cl, Br, I) molecules

• Published in: Rapid communications in mass spectrometry Vol. 20; no. 20; pp. 3151 - 3153
• Main Authors: Veličković, Suzana, Djordjević, Vesna, Cvetićanin, Jelena, Djustebek, Jasmina, Veljković, Miomir, Nešković, Olivera
• Format: Journal Article
• Language: English
• Published: 30-10-2006
• ISSN: 0951-4198; 1097-0231
• DOI: 10.1002/rcm.2712

Molecules of Li
n
X (n = 2, 3; X = Cl, Br, I) were examined with a magnetic sector mass spectrometer by surface ionization using a triple rhenium filament impregnated with fullerene (C
60
). The ionization energies obtained for Li
2
Cl, Li
2
Br and Li
2
I molecules are 3.8 ± 0.1, 3.9 ± 0.1 and 4.0 ± 0.1 eV, respectively. The first ionization energy of Li
2
Cl is documented, while there are no literature data for the ionization energies of Li
2
Br and Li
2
I. The molecules of Li
3
Cl, Li
3
Br and Li
3
I were detected experimentally for the first time with ionization energies of 4.0 ± 0.1, 4.1 ± 0.1 and 4.1 ± 0.1 eV, respectively. The ionization energies of Li
n
X (n = 2, 3; X = Cl, Br, I) are in correlation with the theoretical prediction of their hyperlithiated configurations. Copyright © 2006 John Wiley & Sons, Ltd.