The 1650-1350 Å absorption spectrum of nitrogen dioxide

摘要: An analysis of the 1650-1350 $\overset{\circ}{\mathrm A}$ band system nitrogen dioxide has been carried out. A pattern spacings and intensities is found that complex but regular. It shown this qualitatively, to a large extent quantitatively, just what would be expected for transition in which shape molecule changes from bent linear. The parallel one upper state $^2\Sigma^+\_u$ symmetry. symmetrical stretching frequency increased its ground-state value ca. 1420 cm$^{-1}$ state. upper-state bending 600 cm$^{-1}$. N-O length decreased value, probably 1.1(3) A}$. resembles closely ground NO$^+\_2$. classed as Rydberg transitions leading first ionization potential NO$\_2$; orbital odd electron transferred (p$\sigma$) type. anharmonic constant g$\_{22}$ linear 2$\cdot$(3) Other may well present region, have not definitely identified.