Abstract

<p>The spectrum of CO<sub>2</sub> in the photographic infrared has been studied with absorbing paths up to 5500 m. Thirteen absorption bands were found of which eleven have been analyzed in detail. One of these is due to C<sup>13</sup>O<sub>2</sub>. From the band origins of the C<sup>12</sup>O<sub>2</sub> bands improved values for some of the anharmonic constants of the molecule have been derived.</p> <p>The study of the rotational structure of the photographic infrared CO<sub>2</sub> bands has yielded considerably improved values for the rotational constants. The new values are <i>B</i><sub>000</sub>=0.3902<sub>0</sub> cm<sup>-1</sup>, α<sub>1</sub>=+0.00109, α<sub>2</sub>= -0.00073, α<sub>3</sub>=+0.00307 cm<sup>-1</sup>. From these the following equilibrium values of rotational constant, moment of inertia, and internuclear distance are obtained: <i>B</i><sub><i>e</i></sub>=0.3915<sub>5</sub> cm<sup>-1</sup>, <i>I</i><sub><i>e</i></sub>=71.46<sub>8</sub>×10<sup>-40</sup> gm cm<sup>2</sup>, <i>r</i><sub><i>e</i></sub>=1.1600<sub>5</sub>×10<sup>-8</sup> cm. By taking account of the effect of Fermi resonance, excellent agreement of the observed <i>B</i><sub>[<i>υ</i>]</sub> values with those calculated from the α<sub>i</sub> and B<sub>e</sub> is obtained.</p> <p>The <i>l</i>-type doubling in the states 01<sup>1</sup>0, 11<sup>1</sup>3, and 03<sup>1</sup>3 has been determined. The agreement of the splitting constants <i>q</i> with those obtained from theory is satisfactory.</p>

PDF Article

References

  • View by:
  • |
  • |

  1. W. S. Adams and T. Dunham, Publ. Astron. Soc. Pacific 44, 243 (1932).
  2. A. Adel and V. M. Slipher, Phys. Rev. 46, 240 (1934).
  3. G. Herzberg and L. Herzberg, J. Chem. Phys. 18, 1551 (1950).
  4. G. Herzberg, in G. P. Kuiper's The Atmospheres of the Earth and Planets (University of Chicago Press, Chicago, 1949), first edition, p. 346; (1952), second edition, p. 406. See also a preliminary note on the photographic infrared spectrum by G. Herzberg and H. Verleger, Phys. Rev. 48, 706 (1935).
  5. G. Herzberg, Infrared and Raman Spectra of Polyatomic Molecules (D. Van Nostrand Company, Inc., New York, 1945).
  6. H. J. Bernstein and G. Herzberg, J. Chem. Phys. 16, 30 (1948).
  7. G. Herzberg (unpublished): see Astron. J. 52, 147 (1947).
  8. G. Herzberg, reference 5, p. 274.
  9. R. C. Herman, Astrophys. J. 107, 386 (1948).
  10. R. S. Mulliken, J. Phys. Chem. 41, 159 (1937).
  11. Taylor, Benedict, and Strong, J. Chem. Phys. 20, 1884 (1952).
  12. Goldberg, Mohler, McMath, and Pierce, Phys. Rev. 76, 1848 (1949).
  13. W. S. Benedict and E. K. Plyler, J. Research Natl. Bur. Standards 46, 246 (1951).
  14. A. H. Nielsen and Y. T. Yao, Phys. Rev. 68, 173 (1945).
  15. This is also shown by the appreciable scatter of the B" values obtained by Goldberg et al. for different bands without the use of combination differences.
  16. J. W. M. DuMond and E. R. Cohen, Phys. Rev. 82, 555 (1951).
  17. A. Adel and D. M. Dennison, Phys. Rev. 44, 99 (1933).
  18. G. Herzberg, Revs. Modern Phys. 14, 219 (1942).
  19. For a more detailed explanation see Fig. 111, p. 389 of ref. (5) and the accompanying discussion.
  20. P. E. Martin and E. F. Barker, Phys. Rev. 41, 291 (1932).
  21. J. de Heer and H. H. Nielsen, J. Chem. Phys. 20, 101 (1952).

Adams, W. S.

W. S. Adams and T. Dunham, Publ. Astron. Soc. Pacific 44, 243 (1932).

Adel, A.

A. Adel and V. M. Slipher, Phys. Rev. 46, 240 (1934).

A. Adel and D. M. Dennison, Phys. Rev. 44, 99 (1933).

Barker, E. F.

P. E. Martin and E. F. Barker, Phys. Rev. 41, 291 (1932).

Benedict, W. S.

W. S. Benedict and E. K. Plyler, J. Research Natl. Bur. Standards 46, 246 (1951).

Bernstein, H. J.

H. J. Bernstein and G. Herzberg, J. Chem. Phys. 16, 30 (1948).

Cohen, E. R.

J. W. M. DuMond and E. R. Cohen, Phys. Rev. 82, 555 (1951).

de Heer, J.

J. de Heer and H. H. Nielsen, J. Chem. Phys. 20, 101 (1952).

Dennison, D. M.

A. Adel and D. M. Dennison, Phys. Rev. 44, 99 (1933).

DuMond, J. W. M.

J. W. M. DuMond and E. R. Cohen, Phys. Rev. 82, 555 (1951).

Dunham, T.

W. S. Adams and T. Dunham, Publ. Astron. Soc. Pacific 44, 243 (1932).

Herman, R. C.

R. C. Herman, Astrophys. J. 107, 386 (1948).

Herzberg, G.

H. J. Bernstein and G. Herzberg, J. Chem. Phys. 16, 30 (1948).

G. Herzberg (unpublished): see Astron. J. 52, 147 (1947).

G. Herzberg, reference 5, p. 274.

G. Herzberg and L. Herzberg, J. Chem. Phys. 18, 1551 (1950).

G. Herzberg, in G. P. Kuiper's The Atmospheres of the Earth and Planets (University of Chicago Press, Chicago, 1949), first edition, p. 346; (1952), second edition, p. 406. See also a preliminary note on the photographic infrared spectrum by G. Herzberg and H. Verleger, Phys. Rev. 48, 706 (1935).

G. Herzberg, Infrared and Raman Spectra of Polyatomic Molecules (D. Van Nostrand Company, Inc., New York, 1945).

G. Herzberg, Revs. Modern Phys. 14, 219 (1942).

Herzberg, L.

G. Herzberg and L. Herzberg, J. Chem. Phys. 18, 1551 (1950).

Martin, P. E.

P. E. Martin and E. F. Barker, Phys. Rev. 41, 291 (1932).

Mulliken, R. S.

R. S. Mulliken, J. Phys. Chem. 41, 159 (1937).

Nielsen, A. H.

A. H. Nielsen and Y. T. Yao, Phys. Rev. 68, 173 (1945).

Nielsen, H. H.

J. de Heer and H. H. Nielsen, J. Chem. Phys. 20, 101 (1952).

Plyler, E. K.

W. S. Benedict and E. K. Plyler, J. Research Natl. Bur. Standards 46, 246 (1951).

Slipher, V. M.

A. Adel and V. M. Slipher, Phys. Rev. 46, 240 (1934).

Yao, Y. T.

A. H. Nielsen and Y. T. Yao, Phys. Rev. 68, 173 (1945).

Other

W. S. Adams and T. Dunham, Publ. Astron. Soc. Pacific 44, 243 (1932).

A. Adel and V. M. Slipher, Phys. Rev. 46, 240 (1934).

G. Herzberg and L. Herzberg, J. Chem. Phys. 18, 1551 (1950).

G. Herzberg, in G. P. Kuiper's The Atmospheres of the Earth and Planets (University of Chicago Press, Chicago, 1949), first edition, p. 346; (1952), second edition, p. 406. See also a preliminary note on the photographic infrared spectrum by G. Herzberg and H. Verleger, Phys. Rev. 48, 706 (1935).

G. Herzberg, Infrared and Raman Spectra of Polyatomic Molecules (D. Van Nostrand Company, Inc., New York, 1945).

H. J. Bernstein and G. Herzberg, J. Chem. Phys. 16, 30 (1948).

G. Herzberg (unpublished): see Astron. J. 52, 147 (1947).

G. Herzberg, reference 5, p. 274.

R. C. Herman, Astrophys. J. 107, 386 (1948).

R. S. Mulliken, J. Phys. Chem. 41, 159 (1937).

Taylor, Benedict, and Strong, J. Chem. Phys. 20, 1884 (1952).

Goldberg, Mohler, McMath, and Pierce, Phys. Rev. 76, 1848 (1949).

W. S. Benedict and E. K. Plyler, J. Research Natl. Bur. Standards 46, 246 (1951).

A. H. Nielsen and Y. T. Yao, Phys. Rev. 68, 173 (1945).

This is also shown by the appreciable scatter of the B" values obtained by Goldberg et al. for different bands without the use of combination differences.

J. W. M. DuMond and E. R. Cohen, Phys. Rev. 82, 555 (1951).

A. Adel and D. M. Dennison, Phys. Rev. 44, 99 (1933).

G. Herzberg, Revs. Modern Phys. 14, 219 (1942).

For a more detailed explanation see Fig. 111, p. 389 of ref. (5) and the accompanying discussion.

P. E. Martin and E. F. Barker, Phys. Rev. 41, 291 (1932).

J. de Heer and H. H. Nielsen, J. Chem. Phys. 20, 101 (1952).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.