High-resolution anion photoelectron spectra of TiO2-, ZrO2-, and HfO2- obtained by slow electron velocity-map imaging

Jongjin B. Kim; Marissa L. Weichman; Daniel M. Neumark

doi:10.1039/c3cp54084g

High-resolution anion photoelectron spectra of TiO₂^-, ZrO₂^-, and HfO₂^- obtained by slow electron velocity-map imaging

Jongjin B. Kim, Marissa L. Weichman, Daniel M. Neumark

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

29 Scopus citations

Abstract

High-resolution anion photoelectron spectra of the Group 4 metal dioxides TiO₂^-, ZrO₂^-, and HfO ₂^- are reported, using slow electron velocity-map imaging (SEVI) combined with ion trapping and cryogenic cooling. The resulting spectra exhibit sub-meV resolution with no congestion from hot bands. Electron affinities are obtained with greater precision than in previous photodetachment experiments, with values of 1.5892(5) eV, 1.6397(5) eV, and 2.1045(5) eV, for TiO₂, ZrO₂, and HfO₂, respectively. We obtain precise values for all of the vibrational frequencies of the neutral X̃¹A₁ ground states, except for the ν₃ mode of HfO₂. Weak activity observed in the forbidden ν₃ mode for TiO₂ and ZrO₂ is attributed to Herzberg-Teller coupling to the Ã²B₂ excited state.

Original language	English (US)
Pages (from-to)	20973-20981
Number of pages	9
Journal	Physical Chemistry Chemical Physics
Volume	15
Issue number	48
DOIs	https://doi.org/10.1039/c3cp54084g
State	Published - Dec 28 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1039/c3cp54084g

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@article{52531270911043beb52d0922b83c4756,

title = "High-resolution anion photoelectron spectra of TiO2-, ZrO2-, and HfO2- obtained by slow electron velocity-map imaging",

abstract = "High-resolution anion photoelectron spectra of the Group 4 metal dioxides TiO2-, ZrO2-, and HfO 2- are reported, using slow electron velocity-map imaging (SEVI) combined with ion trapping and cryogenic cooling. The resulting spectra exhibit sub-meV resolution with no congestion from hot bands. Electron affinities are obtained with greater precision than in previous photodetachment experiments, with values of 1.5892(5) eV, 1.6397(5) eV, and 2.1045(5) eV, for TiO2, ZrO2, and HfO2, respectively. We obtain precise values for all of the vibrational frequencies of the neutral {\~X}1A1 ground states, except for the ν3 mode of HfO2. Weak activity observed in the forbidden ν3 mode for TiO2 and ZrO2 is attributed to Herzberg-Teller coupling to the {\~A}2B2 excited state.",

author = "Kim, {Jongjin B.} and Weichman, {Marissa L.} and Neumark, {Daniel M.}",

year = "2013",

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doi = "10.1039/c3cp54084g",

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journal = "Physical Chemistry Chemical Physics",

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T1 - High-resolution anion photoelectron spectra of TiO2-, ZrO2-, and HfO2- obtained by slow electron velocity-map imaging

AU - Kim, Jongjin B.

AU - Weichman, Marissa L.

AU - Neumark, Daniel M.

PY - 2013/12/28

Y1 - 2013/12/28

N2 - High-resolution anion photoelectron spectra of the Group 4 metal dioxides TiO2-, ZrO2-, and HfO 2- are reported, using slow electron velocity-map imaging (SEVI) combined with ion trapping and cryogenic cooling. The resulting spectra exhibit sub-meV resolution with no congestion from hot bands. Electron affinities are obtained with greater precision than in previous photodetachment experiments, with values of 1.5892(5) eV, 1.6397(5) eV, and 2.1045(5) eV, for TiO2, ZrO2, and HfO2, respectively. We obtain precise values for all of the vibrational frequencies of the neutral X̃1A1 ground states, except for the ν3 mode of HfO2. Weak activity observed in the forbidden ν3 mode for TiO2 and ZrO2 is attributed to Herzberg-Teller coupling to the Ã2B2 excited state.

AB - High-resolution anion photoelectron spectra of the Group 4 metal dioxides TiO2-, ZrO2-, and HfO 2- are reported, using slow electron velocity-map imaging (SEVI) combined with ion trapping and cryogenic cooling. The resulting spectra exhibit sub-meV resolution with no congestion from hot bands. Electron affinities are obtained with greater precision than in previous photodetachment experiments, with values of 1.5892(5) eV, 1.6397(5) eV, and 2.1045(5) eV, for TiO2, ZrO2, and HfO2, respectively. We obtain precise values for all of the vibrational frequencies of the neutral X̃1A1 ground states, except for the ν3 mode of HfO2. Weak activity observed in the forbidden ν3 mode for TiO2 and ZrO2 is attributed to Herzberg-Teller coupling to the Ã2B2 excited state.

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U2 - 10.1039/c3cp54084g

DO - 10.1039/c3cp54084g

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JF - Physical Chemistry Chemical Physics

IS - 48

ER -

High-resolution anion photoelectron spectra of TiO₂^-, ZrO₂^-, and HfO₂^- obtained by slow electron velocity-map imaging

Abstract

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