A Dinitrogen Complex without Donor Ligands: Isolation and Characterization of a [Mn(CO)₅(η¹-N₂)]⁺ Salt.

ABSTRACT: Dinitrogen complexes are intermediates in nitrogen fixation. Until now, all isolated molecular dinitrogen complexes have relied on ancillary ligands that are net electron donors, yielding N₂ ligands carrying a clear negative partial charge. Here, we present the synthesis, isolation, and characterization of the complex salt [Mn(CO)₅(η¹-N₂)]⁺[F(Al(OR^F)₃)₂]^- (R^F = C(CF₃)₃) that resulted from the oxidation of Mn₂(CO)₁₀ under a dinitrogen atmosphere in pentafluorobenzene solvent. The IR/Raman spectra reveal a high N₂ frequency of 2301/2303 cm^-1 close to free N₂ gas (2330 cm^-1) that indicates little π

SUBMITTER: Sellin M 

PROVIDER: S-EPMC12464980 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature