ABSTRACT: Ultraviolet photoexcitation of matrix isolated acetyl, propionyl and valeryl chlorides at produces HCl-ketene, HCl-methyl-detene, and HCl-propyl-ketene complexes. We report precursor and matrix dependent reaction quantum yeilds. Quantum yield values decrease with increasing alkyl chain length due to a reduced number of (scientific) H-atoms available for the elimination reaction and steric hindrance. We measure quantum yields in neat matrices to be roughly half that in argon or xenon matrices and assign structures for HCl and ketene complexes in argon and xenon matrices by comparing IR spectra to ab-initio results...
Revised: September 27, 2002 |
Published: January 29, 1999
Citation
Rowland J.B., P.R. Winter, G. Ellison, J.G. Radziszewski, and W.P. Hess. 1999.Photochemistry of Matrix-Isolated and Thin Film Acid Chlorides: Quantum Yields and Product Structures.Journal of Physical Chemistry A 103, no. 7:965-970.PNNL-SA-30320.