Magnetic coupling between Fe(NO) spin probe ligands through diamagnetic Ni^II, Pd^II and Pt^II tetrathiolate bridges.

ABSTRACT: Reaction of the nitrosylated-iron metallodithiolate ligand, paramagnetic (NO)Fe(N₂S₂), with [M(CH₃CN)_n][BF₄]₂ salts (M = Ni^II, Pd^II, and Pt^II; n = 4 or 6) affords di-radical tri-metallic complexes in a stairstep type arrangement ([FeMFe]²⁺, M = Ni, Pd, and Pt), with the central group 10 metal held in a MS₄ square plane. These isostructural compounds have nearly identical ν(NO) stretching values, isomer shifts, and electrochemical properties, but vary in their magnetic properties. Despite the intramolecular Fe⋯Fe distances of ca. 6 Å, antiferromagnetic coupling is observed between {Fe(NO)}⁷ units as established by magnetic susceptibi

SUBMITTER: Quiroz M 

PROVIDER: S-EPMC10466285 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature