Formation, structures, and reactivities of niobium oxide cluster ions

被引：79

作者：

Deng, HT ^{[1
]}

Kerns, KP ^{[1
]}

Castleman, AW ^{[1
]}

机构：

[1] PENN STATE UNIV,DEPT CHEM,UNIVERSITY PK,PA 16802

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1996年 / 100卷 / 32期

关键词：

D O I：

10.1021/jp953100d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Niobium oxide cluster ions are produced by a laser-induced plasma source. The cluster distribution, collision-induced dissociation (CID), and cluster reactivities are studied using a triple-quadrupole mass spectrometer. CID experiments on the cluster ions Nb3O7-9+, Nb4O9-11+, and Nb5O12+ reveal that their building blocks are Nb2O5, NbO2+, NbO3, Nb3O7+, O, and O-2, whereby the cluster stoichiometry is assigned to have the general form (NbO3)(m)(NbO2)(n)(O)(0-4)(+). The trends in the ionization potentials of these species are estimated in terms of the CID fragments produced, Nb3O8-9+ and Nb4O11+ cluster ions evidently form via the adsorption of one oxygen atom or molecule onto the cluster surface. Nb3O7+, Nb4O9+, and Nb5O12+ have strong reactivities to abstract an oxygen atom from oxygen-containing molecules and adsorb small hydrocarbons at near thermal energies. In particular, the reactivity of the oxygen atom or molecule in the oxide clusters Nb3O8-9+ and Nb4O11+ is consistent with our suggestions that it has a radical oxygen character.

引用

页码：13386 / 13392

页数：7

共 38 条

[1] DETERMINATION OF ION-LIGAND BOND-ENERGIES AND ION FRAGMENTATION ENERGIES OF ELECTROSPRAY-PRODUCED IONS BY COLLISION-INDUCED DISSOCIATION THRESHOLD MEASUREMENTS
ANDERSON, SG
BLADES, AT
KLASSEN, J
KEBARLE, P
[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, 1995, 141 (03): : 217 - 228
[2] IONIZATION-POTENTIALS OF NIOBIUM CLUSTER OXIDES
ATHANASSENAS, K
KREISLE, D
COLLINGS, BA
RAYNER, DM
HACKETT, PA
[J]. CHEMICAL PHYSICS LETTERS, 1993, 213 (1-2) : 105 - 110
[3] DETERMINATION OF THE ATOMIZATION ENERGIES OF THE GASEOUS MOLECULES NB2O4, NB2O5, NB4O9, AND NB4O10
BALDUCCI, G
GIGLI, G
GUIDO, M
[J]. JOURNAL OF CHEMICAL PHYSICS, 1986, 85 (10) : 5955 - 5960
[4] PRODUCTION AND FRAGMENTATION OF MOLYBDENUM OXIDE IONS
CASSADY, CJ
WEIL, DA
MCELVANY, SW
[J]. JOURNAL OF CHEMICAL PHYSICS, 1992, 96 (01) : 691 - 699
[5] CONVERSION OF CH4 TO CH3OH - REACTIONS OF COO+ WITH CH4 AND D-2, CO+ WITH CH3OD AND D2O, AND CO+(CH3OD) WITH XE
CHEN, YM
CLEMMER, DE
ARMENTROUT, PB
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (17) : 7815 - 7826
[6] REACTIONS OF SCO+, TIO+, AND VO+ WITH D2 - M+-OH BOND-ENERGIES AND EFFECTS OF SPIN CONSERVATION
CLEMMER, DE
ARISTOV, N
ARMENTROUT, PB
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (03) : 544 - 552
[7] ELECTRONIC-STRUCTURES AND GAS-PHASE REACTIVITIES OF CATIONIC LATE-TRANSITION-METAL OXIDES
FIEDLER, A
SCHRODER, D
SHAIK, S
SCHWARZ, H
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (23) : 10734 - 10741
[8] GAS-PHASE CHEMISTRY OF METAL-OXIDE ANIONS - THE REACTIONS OF DIOXOMANGANATE(III), MNO2- AND TRIOXOMANGANATE(V), MNO3- IONS WITH ALIPHATIC-ALCOHOLS
FOKKENS, RH
GREGOR, IK
NIBBERING, NMM
[J]. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 1991, 5 (08) : 368 - 370
[9] DEHYDROGENATION OF ISOBUTANE BY OXYGEN-DEFICIENT COBALT OXYGEN CLUSTER IONS
FREAS, RB
CAMPANA, JE
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (15) : 4659 - 4661
[10] STUDIES OF REACTIONS OF SMALL TITANIUM-OXIDE CLUSTER CATIONS TOWARD OXYGEN AT THERMAL ENERGIES
GUO, BC
KERNS, KP
CASTLEMAN, AW
[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, 1992, 117 (1-3): : 129 - 144

← 1 2 3 4 →