A Survey of the Angular Distortion Landscape in the Coordination Geometries of High-Spin Iron(II) 2,6-Bis(pyrazolyl)pyridine Complexes.

ABSTRACT: Reaction of 2,4,6-trifluoropyridine with sodium 3,4-dimethoxybenzenethiolate and 2 equiv of sodium pyrazolate in tetrahydrofuran at room temperature affords 4-(3,4-dimethoxyphenylsulfanyl)-2,6-di(pyrazol-1-yl)pyridine (L), in 30% yield. The iron(II) complexes [FeL₂][BF₄]₂ (1a) and [FeL₂][ClO₄]₂ (1b) are high-spin with a highly distorted six-coordinate geometry. This structural deviation from ideal D_2d symmetry is common in high-spin [Fe(bpp)₂]²⁺ (bpp = di{pyrazol-1-yl}pyridine) derivatives, which are important in spin-crossover materials research. The magnitude of the distortion in 1a and 1b is the largest yet discovered for a mononuclea

SUBMITTER: Capel Berdiell I 

PROVIDER: S-EPMC10848207 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature