Knowledge Bank

Production of a variety of loosely bound molecular species is readially acheived by use of a supersonic nozzle. Systems examined include the van der Walls isomers (NO)$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$ and $N2-O2$ and $H2$ - CO (isomeric with formaldehyde). Among the species studied are $(NO)n$ (n = 2, 3, 4), Ar $BF3$, $(O2)2$ and $(CO2)2$ . Electric delfection measurement have determined the polarity of the species. For $(NO)2$ some radio frequency and microwave transitions have been observed.