Knowledge Bank

An electron photodetachment spectrum of $Cl3\mathrm{<mrow\; data-mjx-texclass="ORD">-</mrow>}$ is reported for 193 nm (6.42 eV) excitation. The spectrum was assigned using high-level abinitio calculations for the $Cl3$ radical and the $Cl3\mathrm{<mrow\; data-mjx-texclass="ORD">-</mrow>}$ anion. A broad band centered around 1.25 eV (electron kinetic energy) has been assigned to the and transitions. Vertical photodetachment accesses the transition state region for the Cl exchange reaction: $Cl+Cl2⟶Cl2+Cl$. A narrow doublet band at 0.55 eV is assigned to the transition, split by spin-orbit interaction.