An experimental search is underway to observe the long range triplet ionic states H+ H− of molecular hydrogen. Resonantly enhanced multi photon ionization of the metastable c 3 ∏− u 2pπ state is used access to the R(1)nd1 n=21 Rydberg state that serves as an intermediate stepping stone state to probe the energy region above the ionization limit with a second tunable laser photon. The metastable state is prepared by electron capture of 6 keV H+ 2 ions in potassium in a molecular beam. Formation of the H+ H− triplet configuration involves triplet excited states of the H− ion, especially the 2p2 3P e state, the second bound state of H− predicted to exist with a lifetime long compared to typical auto ionization lifetimes but not yet observed experimentally. Details of the experiment and preliminary results to date will be presented at the conference.