The first phosphorus containing species observed in an interstellar medium was phosphorus mononitride (PN). This N2 analogue is highly reactive and has only been isolated and studied in low temperature matrices. As a result, little is known about this species. Recently work has shown that transition metals can allow the PN linkage to be accessed, specifically through a transient (N[tBu]Ar)3V-N≡P (Ar = 3,5-Me2C6H3) species. In the current work, a unique PN coordination complex was synthesized by reductive coupling of LiPr2FeN (L = tris(carbene)borate; R = 1,5-diisopropyl) with (N3N)MoP (N3N = tris(2-trimethylsilylaminoethy1)amine). The crystallographically characterized heterobimetallic complex reveals a short P-N distance consistent with that of a double bond, providing structural evidence for the first isolable PN compound. Crystallographic and spectroscopic data reveal that metal oxidation states to be Fe(II) and Mo(IV), suggesting P=N2− ligand. Cyclic voltammetry reveals a reversible oxidation wave, and chemical oxidation with AgBPh4 yields the [Fe-NP-Mo][BPh4]. The impact of metal oxidation state on the nature of the PN ligand as well as its reactivity will also be presented.