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Ultra-violet Absorption Spectra of the Diazines

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Abstract

NO rotational analysis of an electronic transition has been reported for a molecule containing as many as ten atoms. However, preliminary spectrograms of pyrazine (Fig. 1) showed fine structure clearly susceptible to analysis (Fig. 2). Twelve bands which were relatively free from overlapping were photographed in the fourth order of a 150,000-line grating, and the rotational constants and accurate band centres were obtained. Similar treatment was possible for the 3200 Å. absorption of pyrimidine and the 3700 Å. absorption by pyridazine. The constants obtained for the respective 0–0 bands are :

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References

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Authors and Affiliations

  1. Department of Chemistry, Vanderbilt University, Nashville Tennessee

    K. KEITH INNES, JAMES A. MERRITT, WAYNE C. TINCHER & SHELBY G. TILFORD

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  1. K. KEITH INNES
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  2. JAMES A. MERRITT
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  3. WAYNE C. TINCHER
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  4. SHELBY G. TILFORD
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INNES, K., MERRITT, J., TINCHER, W. et al. Ultra-violet Absorption Spectra of the Diazines. Nature 187, 500–501 (1960). https://doi.org/10.1038/187500a0

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