High Resolution Infrared Laser Spectroscopy of Metal-Containing Radicals
Lead Research Organisation:
University of York
Department Name: Chemistry
Abstract
We propose to record infrared spectra of small metal-containing polyatomic free radicals using a new laser spectrometer. The very recent availability of a high-power, single frequency source of widely tunable infrared radiation will revolutionise the study of transient metal-containing species. We propose to synthesise these molecules in a metal flow reactor and in a laser vaporisation jet expansion source based on relatively standard techniques. The novelty comes from the ultrasensitive detection of these new free radicals by infrared-optical double resonance spectroscopy and by direct infrared absorption spectroscopy using the cavity ringdown technique. The target molecules are models for the more complex species involved in catalysis and inorganic chemistry. Electronic structure, electron distributions, vibrational frequencies and molecular geometry can all be studied with exquisite precision by high resolution laser spectroscopy and compared with the predictions of quantum chemistry. The quality of quantum chemical predictions will be critically assessed and this will ultimately lead to improved models for more complex systems.
Organisations
People |
ORCID iD |
Peter Bernath (Principal Investigator) |
Publications
Bernath P
(2009)
Molecular astronomy of cool stars and sub-stellar objects
in International Reviews in Physical Chemistry
Bernath P
(2009)
Revised molecular constants and term values for the X2? and B2S+ states of OH
in Journal of Molecular Spectroscopy
Ram R
(2010)
Revised molecular constants and term values for the X3S- and A3? states of NH
in Journal of Molecular Spectroscopy
Li G
(2010)
Fourier-transform infrared emission spectroscopy of BO
in Journal of Molecular Spectroscopy
Li G
(2012)
High resolution laser excitation spectroscopy of barium monosulfide
in Journal of Molecular Spectroscopy
Wang J
(2008)
High-resolution laser excitation spectroscopy of the transition of BaOH
in Journal of Molecular Spectroscopy
Ram R
(2009)
Fourier transform emission spectroscopy and ab initio calculations on WO
in Journal of Molecular Spectroscopy
Tandy J
(2009)
High-resolution laser spectroscopy of BaOH and BaOD: Anomalous spin-orbit coupling in the state
in Journal of Molecular Spectroscopy
Ram R
(2010)
High resolution emission spectroscopy of the A2?-X2S+ (red) system of 12C14N
in Journal of Molecular Spectroscopy
Ram R
(2009)
Fourier transform infrared emission spectroscopy of new systems of NiS
in Journal of Molecular Spectroscopy