ΔHf: 16.8 kcal/mol, REF: M. W. Chase, J. L. Curnutt, A. T. Hu, H. Prophet, A. N. Syverud, L. C. Walker, J. Phys. Chem. Ref. Data, 3, 311, (1974). Dipole: 4.6 Debye, REF: A. L. McClellan, "Tables of Experimental Dipole Moments," Vol 2, Rahara Enterprises, El Cerrito, (1974). I.P.: 9.1 eV, REF: K. F. Zmbov, M. Miletic, Adv. Mass Spect., 7A, 573 (1978).