Synthesis and characterization of a ditriflate-bridged, diiron(II) complex with syn-N-donor ligands: [Fe2(μ-OTf)2(PIC2DET)2](BARF)2

The diiron(II) complex [Fe2(μ-OTf)2(PIC2DET)2](BARF)2, where PIC2DET is a 2,3-diethynyltriptycene-linked dipicolinic methyl ester ligand, has been synthesized and characterized. X-ray crystallographic data reveal a new mode of coordination for the syn N-donor ligand PIC2DET. Molar conductivity, 1H NMR spectroscopic, and magnetic susceptibility data are consistent with a complex containing two high spin iron atoms that retains its structure in solution.