Knowledge Bank

Several rotational transitions of $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}N16O2$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">15</mrow>}N16O2$ have been studied with a microwave cavity spectrometer and have been assigned to the first excited bending vibration of the molecule. The experimental data are used to determine rotational constants, spin-rotational constants, inertial defect, etc., and they are compared with those of the ground vibrational state. These data also provide a test for the theory of spin-rotation vibrational $dependence.1$