Mass distributions of negative cluster ions of sodium oxide

Atsushi Nakajima; Tsuneyoshi Sugioka; Kuniyoshi Hoshino; Koji Kaya

doi:10.1016/0009-2614(92)85231-X

Mass distributions of negative cluster ions of sodium oxide

Atsushi Nakajima
, Tsuneyoshi Sugioka
, Kuniyoshi Hoshino
, Koji Kaya

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Negative cluster ions of sodium oxide, Na_nO⁻_m (m = 1 and 2), were generated by laser vaporization of a sodium rod, and their mass distribution was measured. In the mass spectra, a number of intense peaks compared to neighbors were observed; in Na_nO⁻₁, the “magic numbers” were observed at n = 9, 21, 27, 35, 41, and 59, and in Na_nO⁻₂, they were observed at n = 11, 17, 23, 29, 37, 43, and 61. Compared with the magic numbers predicted by the jellium shell model, two and four sodium atoms are increased for the magic numbers by adding one and two oxygen atom(s), respectively. Therefore, it is concluded that (1) no valence electrons of oxygen atoms contribute to form the electronic shells of clusters, and that (2) two sodium atoms in the Na_nO⁻_m clusters are bound by one oxygen atom, forming an Na₂O unit as a spectator.

Original language	English
Pages (from-to)	455-459
Number of pages	5
Journal	Chemical Physics Letters
Volume	189
Issue number	4-5
DOIs	https://doi.org/10.1016/0009-2614(92)85231-X
Publication status	Published - 1992

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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@article{9255424323344b7987a891d10f160fde,

title = "Mass distributions of negative cluster ions of sodium oxide",

abstract = "Negative cluster ions of sodium oxide, NanO−m (m = 1 and 2), were generated by laser vaporization of a sodium rod, and their mass distribution was measured. In the mass spectra, a number of intense peaks compared to neighbors were observed; in NanO−1, the {\textquotedblleft}magic numbers{\textquotedblright} were observed at n = 9, 21, 27, 35, 41, and 59, and in NanO−2, they were observed at n = 11, 17, 23, 29, 37, 43, and 61. Compared with the magic numbers predicted by the jellium shell model, two and four sodium atoms are increased for the magic numbers by adding one and two oxygen atom(s), respectively. Therefore, it is concluded that (1) no valence electrons of oxygen atoms contribute to form the electronic shells of clusters, and that (2) two sodium atoms in the NanO−m clusters are bound by one oxygen atom, forming an Na2O unit as a spectator.",

author = "Atsushi Nakajima and Tsuneyoshi Sugioka and Kuniyoshi Hoshino and Koji Kaya",

note = "Funding Information: The financial support from Grant-in-Aid for Scientific Researchf or Priority Area by the Ministry of Education is greatly acknowledged. We greatly acknowledge Mr. T. Kishi and Mr. T. Naganuma for their technical advice.",

year = "1992",

doi = "10.1016/0009-2614(92)85231-X",

language = "English",

volume = "189",

pages = "455--459",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

number = "4-5",

}

TY - JOUR

T1 - Mass distributions of negative cluster ions of sodium oxide

AU - Nakajima, Atsushi

AU - Sugioka, Tsuneyoshi

AU - Hoshino, Kuniyoshi

AU - Kaya, Koji

N1 - Funding Information: The financial support from Grant-in-Aid for Scientific Researchf or Priority Area by the Ministry of Education is greatly acknowledged. We greatly acknowledge Mr. T. Kishi and Mr. T. Naganuma for their technical advice.

PY - 1992

Y1 - 1992

N2 - Negative cluster ions of sodium oxide, NanO−m (m = 1 and 2), were generated by laser vaporization of a sodium rod, and their mass distribution was measured. In the mass spectra, a number of intense peaks compared to neighbors were observed; in NanO−1, the “magic numbers” were observed at n = 9, 21, 27, 35, 41, and 59, and in NanO−2, they were observed at n = 11, 17, 23, 29, 37, 43, and 61. Compared with the magic numbers predicted by the jellium shell model, two and four sodium atoms are increased for the magic numbers by adding one and two oxygen atom(s), respectively. Therefore, it is concluded that (1) no valence electrons of oxygen atoms contribute to form the electronic shells of clusters, and that (2) two sodium atoms in the NanO−m clusters are bound by one oxygen atom, forming an Na2O unit as a spectator.

AB - Negative cluster ions of sodium oxide, NanO−m (m = 1 and 2), were generated by laser vaporization of a sodium rod, and their mass distribution was measured. In the mass spectra, a number of intense peaks compared to neighbors were observed; in NanO−1, the “magic numbers” were observed at n = 9, 21, 27, 35, 41, and 59, and in NanO−2, they were observed at n = 11, 17, 23, 29, 37, 43, and 61. Compared with the magic numbers predicted by the jellium shell model, two and four sodium atoms are increased for the magic numbers by adding one and two oxygen atom(s), respectively. Therefore, it is concluded that (1) no valence electrons of oxygen atoms contribute to form the electronic shells of clusters, and that (2) two sodium atoms in the NanO−m clusters are bound by one oxygen atom, forming an Na2O unit as a spectator.

UR - https://www.scopus.com/pages/publications/0000468413

UR - https://www.scopus.com/pages/publications/0000468413#tab=citedBy

U2 - 10.1016/0009-2614(92)85231-X

DO - 10.1016/0009-2614(92)85231-X

M3 - Article

AN - SCOPUS:0000468413

SN - 0009-2614

VL - 189

SP - 455

EP - 459

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 4-5

ER -

Mass distributions of negative cluster ions of sodium oxide

Abstract

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