Rovibronically Selected And Resolved Laser Photoionization And Photoelectron Studies Of Transition Metal Carbides, Nitrides, And Oxides.

Luo, Zhihong

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https://hdl.handle.net/2142/50845 Copy

Description

Title

Rovibronically Selected And Resolved Laser Photoionization And Photoelectron Studies Of Transition Metal Carbides, Nitrides, And Oxides.

Author(s)

Luo, Zhihong

Contributor(s)

• Ng, Cheuk-Yiu
• Huang, Huang
• Chang, Yih-Chung

Issue Date

2014-06-17

Keyword(s)

Mini-symposium: Beyond the Mass-to-Charge Ratio: Spectroscopic Probes of the Structures of Ions

Abstract

Transition metal (M) carbides, nitrides, and oxides (MX, X = C, N, and O) are important molecules in astrophysics, catalysis, and organometallic chemistry. The measurements of the ionization energies (IEs), bond energies, and spectroscopic constants for MX/MX$^{+}$ in the gas phase by high-resolution photoelectron methods represent challenging but profitable approaches to gain fundamental understandings of the electronic structures and bonding properties of these compounds and their cations. We have developed a two-color laser excitation scheme for high-resolution pulse field ionization photoelectron (PFI-PE) measurements of MX species. By exciting the neutral MX species to a single rovibronic state using a visible laser prior to photoionization by a UV laser, we have obtained fully rotational resolved PFI-PE spectra for TiC$^{+}$, TiO$^{+}$, VCH$^{+}$, VN$^{+}$, CoC$^{+}$, ZrO$^{+}$, and NbC$^{+}$. The unambiguous rotational assignments of these spectra have provided highly accurate IE values for TiC, TiO, VCH, VN, CoC, ZrO, and NbC, and spectroscopic constants for their cations.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/50845

DOI

https://doi.org/10.15278/isms.2014.TG02

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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