Rotational analysis of the 342 nm band of pyridine-N-oxide
Abstract
The 342 nm band of pyridine oxide vapor has been rotationally analyzed by computer simulation of a B-type contour, yielding the constants A' = 0.1871 ± 0.0002 (Δ A = -0.009 65), B' = 0.09343 ± 0.00008 (Δ B = +0.0002 1) and C' = 0.06232 ± 0.00003 (Δ C = -0.0009 3) cm -1. Since the polarization and rotational constant changes are like those occurring in the first 1B 2 ← 1A 1 electronic transition of phenol, it is concluded that the transition is π ∗ ← π rather than π ∗ ← n as suggested on the basis of solvent shifts.
- Publication:
-
Journal of Molecular Spectroscopy
- Pub Date:
- July 1971
- DOI:
- 10.1016/0022-2852(71)90290-6
- Bibcode:
- 1971JMoSp..39..171B