A New Electronic State in Benzene
1.The design of the Dewar cell was similar to that described by W. J. Potts, Jr., J. Chem. Phys. (to be published).
2.An analysis of the benzene 2600 bands is given by Sponer, Nordheim, Sklar, and Teller, J. Chem. Phys. 7, 207 (1939).
2.See also Sponer and Teller, Revs. Modern Phys. 13, 76 (1941).
3.Broude, Medvedov, and Prikhot’ko, Zhur Eksp. Teoret. Fiz. 21, 665 (1951).
3.An abstract is given in Broude, Medvedov, and Prikhot’ko, Chem. Abstracts 46, 8958e (1952).
4.A. S. Davydov, Zhur. Eksp. Teoret. Fiz. 21, 673 (1951).
4.See A. S. Davydov, Chem. Abstracts 46, 8959d (1952).
5.For example, Harrison Shull, J. Chem. Phys. 17, 295 (1949) observed a weak O –O band of the 3400‐A phosphorescence of benzene in a rigid glass.
6.Milton Tamres, J. Am. Chem. Soc. 74, 3375 (1952) finds the heat of mixing of benzene and to be
7.C. C. J. Roothaan and R. S. Mulliken, J. Chem. Phys. 16, 118 (1948). predict this state to lie about 4.7 ev above the ground state. They estimate the intensity of the transition to be about one‐hundredth as strong as the
8.M. E. Hobbs and E. J. Hackney, Abstracts of the Symposium on Molecular Structure and Spectroscopy, Ohio State University, June 1952.
9.M. Kasha, J. Chem. Phys. 20, 71 (1952), studied α‐chloronaphthalene in ethyl iodide and found that the lowest singlet‐triplet absorption was strongly enhanced.
10.The possibility that the charge‐transfer wavelength is correlated with the position of a triplet is discussed by McConnell, Ham, and Platt, J. Chem. Phys. (to be published).
11.Ham, Platt, and McConnell, J. Chem. Phys. 19, 1301 (1951).
12.C. Reid, J. Chem. Phys. 20, 1212 (1952).
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