In general, the different 13Ns show similar structures upon adsorption of NxHy and the energies follow similar trends. At low temperatures, the surfaces are terminated by relatively undecomposed adsorbates with the hydrogen-bonded NH2(tp) termination being the most stable surface structure. At higher temperatures the entropy causes the surface to prefer structures that lead to more free gas molecules such as either N2H2 and N2 dimer adsorbed species and at the highest temperatures the surface becomes uncovered forming bare metal sites.