ΔHf: 1.7 kcal/mol, REF: D. D. Wagman, W. H. Evans, V. B. Parker, R. H. Schumm, I. Halow, S. M. Bailey, K. L. Churney, R. L. Nuttall, J. Phys. Chem. Ref. Data Suppl. 11, 2 (1982). Dipole: 4.6 Debye, REF: A. L. McClellan, "Tables of Experimental Dipole Moments," Vol 2, Rahara Enterprises, El Cerrito, (1974). I.P.: 8.5 eV, REF: R. D. Levin, S. G. Lias, "Ionization Potentials and Appearance Potential Measurements," 1971-1981, Natl. Stand. Ref. Data Ser., Natl. Bur. Stand. 71, (1982), Cat. No. C13.48:71.