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Formation and ionization energies of small chlorine-doped lithium clusters by thermal ionization mass spectrometry
dc.creator | Veličković, Suzana | |
dc.creator | Đustebek, Jasmina B. | |
dc.creator | Veljković, Filip M. | |
dc.creator | Radak, Bojan | |
dc.creator | Veljković, Miomir V. | |
dc.date.accessioned | 2018-03-01T22:14:18Z | |
dc.date.available | 2018-03-01T22:14:18Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0951-4198 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/4666 | |
dc.description.abstract | RATIONALE: Theoretical calculations have shown that the first ionization energy of clusters of the type LinCl (n GT = 2), with more than eight valent electrons, is lower than that of alkali metal atoms; hence they are named superalkali. Superalkali clusters can mimic the chemical behavior of alkali metals and may be used as building blocks of new cluster-assembled materials. There is currently no reliable experimental proof of this kind of clusters and such proof is required. METHODS: The LinCl (n = 2-6) clusters were produced by a thermal ionization source of modified design, and mass selected by a magnetic-sector mass spectrometer. The modification pertains to the replacement of the side filaments by a cylinder in the triple-filament thermal ionization source. The sample, which is LiCl salt, was pressed into a ring and placed on the inner wall of the cylinder. RESULTS: It was observed that the ions of clusters with an even number of lithium atoms (Li2Cl+, Li4Cl+, Li6Cl+) are more stable than the odd-numbered ones (Li5Cl+, Li3Cl+). The ionization energies were determined to be 3.98 +/- 0.25 eV for Li2Cl, 4.10 +/- 0.25 eV for Li3Cl, 3.90 +/- 0.25 eV for Li4Cl, 4.01 +/- 0.25 eV for Li5Cl, and 4.09 +/- 0.25 eV for Li6Cl. The presence of a halogen atom reduces the ionization energy of the metal clusters. CONCLUSIONS: The thermal ionization source of modified design presents a suitable simple way to obtaining and measuring the ionization energies of very small lithium monochloride clusters. Clusters LinCl, n = 4 to 6, were detected for the first time. Copyright (C) 2012 John Wiley and Sons, Ltd. | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172019/RS// | |
dc.rights | restrictedAccess | en |
dc.source | Rapid Communications in Mass Spectrometry | en |
dc.title | Formation and ionization energies of small chlorine-doped lithium clusters by thermal ionization mass spectrometry | en |
dc.type | article | en |
dcterms.abstract | Радак, Бојан; Вељковиц, М. В.; Ђустебек Јасмина Б.; Величковић Сузана; Вељковић Филип; | |
dc.citation.volume | 26 | |
dc.citation.issue | 4 | |
dc.citation.spage | 443 | |
dc.citation.epage | 448 | |
dc.identifier.wos | 000299739700006 | |
dc.identifier.doi | 10.1002/rcm.6122 | |
dc.citation.rank | M22 | |
dc.identifier.pmid | 22279020 | |
dc.identifier.scopus | 2-s2.0-84856271359 |
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