Cocondensation of palladium atoms with 14N2 at 4.2–10 °K leads to the formation of a binary dinitrogen complex. The complex is detected by matrix isolation infrared and Raman spectroscopy. Isotope studies using equimolar 14N2/15N2 mixtures, together with isotope frequency and integrated absorption intensity calculations, suggest that the species is tris-dinitrogen palladium(0), Pd(N2)3.