A Remarkably Unsymmetric Hexairon Core Embraced by Two High-Symmetry Tripodal Oligo-α-pyridylamido Ligands.

ABSTRACT: Oligo-α-pyridylamides offer an appealing route to polyiron complexes with short Fe-Fe separations and large room-temperature magnetic moments. A derivative of tris(2-aminoethyl)amine (H₆tren) containing three oligo-α-pyridylamine branches and 13 nitrogen donors (H₆L) reacts with [Fe₂(Mes)₄] to yield an organic nanocage built up by two tripodal ligands with interdigitated branches (HMes = mesitylene). The nanocage has crystallographic D₃ symmetry but hosts a remarkably unsymmetric hexairon-oxo core, with a central Fe₅(μ₅-O) square pyramid, two oxygen donors bridging basal sites, and an additional Fe center residing in one of the two tren-like pockets. Bond valence sum (BVS) analysis, density functional theor

SUBMITTER: Nicolini A 

PROVIDER: S-EPMC10324315 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature