Knowledge Bank

Three new electronic states of CrF and two electronic transitions tentatively assigned as $Cr2F$ were observed in the chemiluminescent flame resulting from the oxidation of chromium vapor under multiple collision conditions. The CrF transitions have been vibrationally analyzed and term symbols have been assigned for each. These new transitions correlated well with previously observed transitions in the ``pseudo-isoelectronic'' molecules MnO, CrH, and CrCl. This correlation provided the basis for determining the electronic configurations of these CrF states.