$\bar{a} {^{3}}B_{3u}-\widetilde{X} {^{1}}A_{g_{1}}$ AND $\bar{A} {^{1}}B_{3u}-\widetilde{X} {^{1}}A_{g}$ ELECTRONIC TRANSITIONS OF s-TETRAZINE

Livak, D. T.; Franks, L. A.; Innes, K. K.

$\bar{a} {^{3}}B_{3u}-\widetilde{X} {^{1}}A_{g_{1}}$ AND $\bar{A} {^{1}}B_{3u}-\widetilde{X} {^{1}}A_{g}$ ELECTRONIC TRANSITIONS OF s-TETRAZINE

Files

1968-B-03.jpg (126.89 KB)

Date

1968

Authors

Livak, D. T.

Franks, L. A.

Innes, K. K.

Publisher

Ohio State University

Abstract

Hochstrasser and $M a r z z a c o 1$ recently identified the lowest-energy triplet-singlet absorption of crystalline dimethyltetrazine. The 0-0 band lies at $7626 \AA$ , giving an apparent $(π ∗, n)$ singlet-triplet splitting of $4000 c m −1$ . Using a path of about one meter-atmosphere of vapor, we have found 20 bands of the analogous absorption by s-tetrazine. The 0-0 band lies at $7346 \AA$ so that the singlet-triplet splitting is in this case $4520 c m −1$ . A striking difference in the singlet and triplet systems of tetrazine is that in the $a ¯ − X ~$ system the origin band is one of the weakest while in the $A ~ − X ~$ system the origin band is one of the strongest. Accordingly it will be of interest to discuss the vibrational structures in some detail.

Description

This research was supported by the National Science Foundation. $1$ R. M. Hochstrasser and C. Marzzaco, J. Chem. Phys. 46, 4155 (1967).

Author Institution: Department of Chemistry, Vanderbilt University

URI

http://hdl.handle.net/1811/15409

Collections

Abstracts of OSU International Symposium on Molecular Spectroscopy 1960-1969

Full item page

Knowledge Bank