1. J. Drowart and P. Goldfinger, Quart. Rev. (London) 20, 545 (1966).
2. This matter has been discussed in the previous well‐known reviews.3,4
3. G. Herzberg, Diatomic Molecules (D. Van Nostrand Co., Inc., Princeton, N.J., 1950).
4. A. G. Gaydon, Dissociation Energies and Spectra of Diatomic Molecules (Chapman and Hall, Ltd., London, 1953), 2nd. ed.
5. H. Budde, Z. Anorg. Chem. 78, 169 (1912).ZACMAH0372-7874