A vibrationally resolved negative ion photoelectron spectrum of Nb8

Timothy P. Marcy; Doreen G. Leopold

doi:10.1016/S1387-3806(99)00182-7

A vibrationally resolved negative ion photoelectron spectrum of Nb₈

Timothy P. Marcy, Doreen G. Leopold

Chemistry (Twin Cities)

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

20 Scopus citations

Abstract

The 488 nm negative ion photoelectron spectrum of Nb₈, obtained at an instrumental resolution of ~5 meV, displays a clear vibrational progression in a mode with a frequency of 180 ± 15 cm^-1 in neutral Nb₈ and 165 ± 20 cm^-1 in Nb₈/^-. The normal mode displacement of 0.4 ± 0.1 u( 1/2 ) Å indicates a very small geometry change upon electron detachment. The electron affinity of Nb₈ is 1.513 ± 0.008 eV. These results are discussed in light of previous negative ion photoelectron spectroscopic and density functional studies of Nb₈ and Nb₈/^-. (C) 2000 Elsevier Science B.V.

Original language	English (US)
Pages (from-to)	653-666
Number of pages	14
Journal	International Journal of Mass Spectrometry
Volume	195-196
DOIs	https://doi.org/10.1016/S1387-3806(99)00182-7
State	Published - Jan 21 2000

Bibliographical note

Funding Information:
We thank Dr. H. Grönbeck, Dr. W. Andreoni, and Dr. A. Rosén for sending us their ground state structures, and Dr. Evan Millam and Ms. Nancy Fleischer for their assistance with these experiments. We are grateful for Prof. Bob Squires’ insights on niobium cluster ion-molecule chemistry during his visit to our Department last May. Acknowledgement is made to the Donors of The Petroleum Research Fund, administered by the American Chemical Society, for support of this research.

Keywords

Metal clusters
Metal ions
Niobium clusters
Photoelectron spectroscopy

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title = "A vibrationally resolved negative ion photoelectron spectrum of Nb8",

abstract = "The 488 nm negative ion photoelectron spectrum of Nb8, obtained at an instrumental resolution of ~5 meV, displays a clear vibrational progression in a mode with a frequency of 180 ± 15 cm-1 in neutral Nb8 and 165 ± 20 cm-1 in Nb8/-. The normal mode displacement of 0.4 ± 0.1 u( 1/2 ) {\AA} indicates a very small geometry change upon electron detachment. The electron affinity of Nb8 is 1.513 ± 0.008 eV. These results are discussed in light of previous negative ion photoelectron spectroscopic and density functional studies of Nb8 and Nb8/-. (C) 2000 Elsevier Science B.V.",

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author = "Marcy, {Timothy P.} and Leopold, {Doreen G.}",

note = "Funding Information: We thank Dr. H. Gr{\"o}nbeck, Dr. W. Andreoni, and Dr. A. Ros{\'e}n for sending us their ground state structures, and Dr. Evan Millam and Ms. Nancy Fleischer for their assistance with these experiments. We are grateful for Prof. Bob Squires{\textquoteright} insights on niobium cluster ion-molecule chemistry during his visit to our Department last May. Acknowledgement is made to the Donors of The Petroleum Research Fund, administered by the American Chemical Society, for support of this research. ",

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T1 - A vibrationally resolved negative ion photoelectron spectrum of Nb8

AU - Marcy, Timothy P.

AU - Leopold, Doreen G.

N1 - Funding Information: We thank Dr. H. Grönbeck, Dr. W. Andreoni, and Dr. A. Rosén for sending us their ground state structures, and Dr. Evan Millam and Ms. Nancy Fleischer for their assistance with these experiments. We are grateful for Prof. Bob Squires’ insights on niobium cluster ion-molecule chemistry during his visit to our Department last May. Acknowledgement is made to the Donors of The Petroleum Research Fund, administered by the American Chemical Society, for support of this research.

PY - 2000/1/21

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N2 - The 488 nm negative ion photoelectron spectrum of Nb8, obtained at an instrumental resolution of ~5 meV, displays a clear vibrational progression in a mode with a frequency of 180 ± 15 cm-1 in neutral Nb8 and 165 ± 20 cm-1 in Nb8/-. The normal mode displacement of 0.4 ± 0.1 u( 1/2 ) Å indicates a very small geometry change upon electron detachment. The electron affinity of Nb8 is 1.513 ± 0.008 eV. These results are discussed in light of previous negative ion photoelectron spectroscopic and density functional studies of Nb8 and Nb8/-. (C) 2000 Elsevier Science B.V.

AB - The 488 nm negative ion photoelectron spectrum of Nb8, obtained at an instrumental resolution of ~5 meV, displays a clear vibrational progression in a mode with a frequency of 180 ± 15 cm-1 in neutral Nb8 and 165 ± 20 cm-1 in Nb8/-. The normal mode displacement of 0.4 ± 0.1 u( 1/2 ) Å indicates a very small geometry change upon electron detachment. The electron affinity of Nb8 is 1.513 ± 0.008 eV. These results are discussed in light of previous negative ion photoelectron spectroscopic and density functional studies of Nb8 and Nb8/-. (C) 2000 Elsevier Science B.V.

KW - Metal clusters

KW - Metal ions

KW - Niobium clusters

KW - Photoelectron spectroscopy

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