Table of Contents
Laser Chemistry
Volume 19 (1999), Issue 1-4, Pages 311-316

The Carbonate, Co3·, in Solution Studied by Resonance Raman Spectroscopy

1Lasers for Science Facility, Rutherford Appleton Laboratory, Didcot, Oxon., OX11OQX, United Kingdom
2Department of Biological Sciences, University of Salford, Salford M5 4WT, United Kingdom

Received 30 November 1997

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The carbonate radical (Co3·) is of biological significance acting as an intermediate in free radical-mediated damage and is capable of oxidising amino acids and proteins. In order to distinguish between the four possible structures of Co3·, nanosecond timeresolved resonance Raman (TR3) experiments were undertaken. Photolysis of persulphate at 250 nm generated the So4· radical which then oxidised sodium carbonate. Resonance Raman spectra of the resulting Co3· radical were obtained using a probe wavelength of 620 nm. Point group theory calculations and interpretation of the TR3 spectra suggest that the radical has C2v molecular symmetry.