Related Experiment Video
Updated: May 16, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Note: Observation of a new electronically excited state of cobalt monoxide
Abstract:
The laser-induced fluorescence excitation spectra of jet-cooled CoO molecules have been recorded in the energy region of 21,800-25,000 cm(-1). Apart from the seven vibronic bands assigned to the known G(4)Φ(9∕2)(υ(')) - X(4)Δ(7∕2)(υ(") = 0) progression [M. Barnes, D. J. Clouthier, P. G. Hajigeorgiou, G. Huang, C. T. Kingston, A. J. Merer, G. F. Metha, J. R. D. Peers, and S. J. Rixon, J. Mol. Spectrosc. 186, 374 (1997)], we observed a new band system assignable to the [22.95](4)Δ(7∕2)(υ(') = 0 - 4) - X(4)Δ(7∕2)(υ(") = 0) progression. Extensive perturbations among these vibronic bands have been revealed by means of reduced energy plots. The new electronically excited (4)Δ state has been determined to be most likely of an electronic configuration (2pπ)(3)(4sσ)(2)(3dδ)(3)(3dπ)(3) based on the charge-transferred promotion model.
More Related Videos
07:52A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
Published on: April 12, 2017
09:40Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
Related Concept Videos
UV–Vis Spectroscopy: Molecular Electronic Transitions
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Atomic Emission Spectroscopy: Lab
π Electron Effects on Chemical Shift: Overview
Atomic Emission Spectroscopy: Overview
Atomic Emission Spectroscopy: Instrumentation