Knowledge Bank

The data were obtained with the Florida State grating instrument at a resolution of $0.019cm-1$. Sample pressures ranged from 0.05 to 0.6 Torr and the samples were at room temperature $(296\circ K$). Transitions for the parallel bond were observed from P40 to R46 ($2862-2933cm-1$) for K up to and including 9. Spin splittings were observed for $1\le k\le 9$ and were included in the analysis. The results indicate that the line strengths for each value of K can be calculated via the rigid rotor expression in terms of N but that the strengths show a K dependency. The measurements ($0.0033cm-1$ resolution) and quantum assignments of Dana and Maillard (Tours 1977) were used to determine values of absolute line positions and spin splittings for the 2890 to $2932cm-1$ region.