1. Unless otherwise stated the kinetic data are taken from: (a) : Tables of Bimolecular Gas Reactions, NSRDS-NB 99, Washington D. C. 1967, and the supplementary Tables;
2. 1st Supplement: Uwist, OSTI, Department of Education and Science, 1970;
3. 2nd Supplement: University of Birmingham, 1972;
4. 3rd Supplement: University of Birmingham, 1977:
5. (b) : Evaluated Kinetic Data on Gas Phase Addition Reactions, Butterworths, London 1972;