Molecule with 13 total electrons
There are quite some molecules that are persistent (= live long enough in solution to allow for a spectroscopical characterization, but cannot be isolated) or even stable (= can be isolated, bottled and/or used as a starting material) that have an odd number n of electrons, however $n \ne 13$.



Among these radicals are the Gomberg radical (1), the Koelsch radical (2), and the TEMPO radical (3).