Binary nickel, palladium, and platinum nitrous oxide complexes Ni(NNO)(x), Pd(NNO)(x) (x = 1, 2), and PtNNO have been produced by the reactions of laser-evaporated metal atoms with nitrous oxide in solid argon. The complexes were identified on the basis of isotopically substituted infrared absorptions as well as theoretical frequency calculations. These complexes were characterized to have structures with the terminal N atom of N2O bound to the metal atoms. The MNNO complexes are photosensitive and rearrange to OMNN or MO + N-2 upon ultraviolet-visible irradiation.