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Ionization potentials of niobium cluster oxides

✍ Scribed by K. Athanassenas; D. Kreisle; B.A. Collings; D.M. Rayner; P.A. Hackett

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 521 KB
Volume: 213
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)85426-o

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✦ Synopsis

Threshold ionization potentials have been determined for a number of niobium cluster oxides, Nb,O,, n = 3-20, m= l-5. For most values of n, the ionization potential is only weakly dependent on the number of oxygen atoms. However, large changes with m occur for clusters with nine niobium atoms. We attribute this behavior to a geometrical effect and suggest that an "inside/ outside" isomerization occurs in this size range. It is also suggested that niobium clusters which are more reactive to dissociative chemisorption of deuterium have surface atoms of higher coordination number.

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