REFERENCES
1.
2.
G. Herzberg, Infrared and Raman Spectra of Polyatomic Molecules (D. Van Nostrand Company, Inc., New York, 1945). Other authors have given tables differing slightly in a few of the species symbols or definitions from those in Herzberg’s book.
3.
See Minutes of Lund meeting, J. Opt. Soc. Am.
4.
G. Placzek, in Marx’s Handbuch der Radiologie (Akademische Verlagsgesellschaft, Leipzig, Germany, 1934), Vol. VI, 2, p. 205; article on Raman spectra.
5.
6.
See, for example,
H.
Sponer
and E.
Teller
, Revs. Modern Phys.
13
, 75
(1941
).7.
8.
9.
10.
but also see A. D. Walsh, J. Chem. Soc. 1953, 2266.
11.
12.
13.
14.
have used with the same respective meanings as [
R. S.
Mulliken
, Phys. Rev.
59
, 873
(1941
)].15.
See reference 2, Chap. IV.
16.
17.
18.
See Reference 2, pp. 210, 370–371, 400, 447, 460, etc.
19.
In reference 1, the definitions and are recommended for diatomic molecules, but the often used simpler form recommended here seems preferable. The present definition of is used in reference 2.
20.
See reference 2, Chap. IV.
21.
For diatomic band branches (see reference 1) a left superscript O, P, Q, R, or S is used to designate when a loosely coupled electron spin is present. However, this practice, though convenient, is not really necessary, since when and the spin subscripts are given, the value of is determined. To avoid confusion between and it seems best in polyatomic spectra to use the left superscript only to denote of nonlinear molecules.
22.
See reference 5, page 35 and footnote 17 there.
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© 1955 American Institute of Physics.
1955
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