We solve the electronic structure problem using high-level ab initio methods following the protocols from our previous studies on laser-coolable species. We use the equationof-motion coupled-cluster method for electron attachment (EOM-EA-CC) to describe the ground and excited electronic states of doublet radical cations . In these calculations the target states (with +1 charge) are obtained by attaching an electron to a closed-shell +2 reference state described by the coupled-clusters singles doubles (CCSD) method. This F, Cl, Br, O, S, N, P aug-cc-pVTZ 47-49 a When two basis sets are shown for the same atom, it means that the energy and properties calculations were computed with a basis with an effective core potential and SOCs were computed with an all-electron basis.