" Unless otherwise indicated, from D. R. Lide, CRC Handbook of Chemistry and Physics, 79th ├ęd., CRC Press, Boca Raton, FL, 1998/1999, and Atkinson et al., J. Phys. Chem. Ref. Data, 26, 1329-1499 (1997).

h From DeMore et al., JPL Publication No. 97-4, January 15, 1997.

' For estimating heats of formation of other stable species, use group additivity methods described by S. W. Benson, Thermochemical Kinetics, Wiley, New York, 1976, see review of N. Cohen and S. W. Benson for organic compounds ["Estimation of Heats of Formation of Organic Compounds by Additivity Methods," Chem. Rei:., 93, 2419-2438 (1993)], and the paper by C.-J. Chen, D. Wong, and J. W. Bozzelli for chlorinated alkanes and alkenes ["Standard Chemical Thermodynamic Properties of Multichloro Alkanes and Alkenes: A Modified Group Additivity Scheme," J. Phys. Chem. A, 102, 4551-4558 (1998)]. Application of group additivity to C2-C6 alkyl radicals is discussed by N. Cohen ["Thermochemistry of Alkyl for Radicals," J. Phys. Chem., 96, 9052-9058 (1992)].

'' From J. Berkowitz, G. B. Ellison, and D. Gutman, "Three Methods to Measure RH Bond Energies," J. Phys. Chem., 98, 2744-2765 (1994).

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