Knowledge Bank

Fluorine atoms, produced in a microwave discharge in fluorine-containing precursors, are reacted with $H2NCN$ and the products of the reaction are probed by absorption spectroscopy. A system of sharply defined bands have been observed in the region extending from 1870 A to 2175 A. At the present, the observations have been made photographically in the first order of a 6.65-meter grating vacuum spectrograph. The bands are degraded to lower energies and show spacings of approximately $375cm-1$.