Iron(II) Complex Based on π -Conjugated 4-Tetrathiafulvalene-2, 6-di(pyrazin-2-yl)pyridine Ligand

2017 
The tetrathiafulvalene (TTF) functionalized 2, 6-di(pyrazin-2-yl)pyridine derivative, 4-tetrathiafulvalene-2, 6-di(pyrazin-2-yl)pyridine (L), was designed and synthesized. Based on L, one electrochemically active TTF-containing Fe(Ⅱ) complex, namely, [Fe(Ⅱ)(L) 2 ](BF 4 ) 2 ·2.75CH 3 CN·0.25CH 2 Cl 2 ( 1 ), was synthesized and characterized by IR, elemental analysis, and X-ray single crystal diffraction. The complex 1 is formed by ligands and iron(Ⅱ) in a tridentate fashion. Complex 1 exhibits a discrete structure and features diverse nonclassical hydrogen bonding interactions, π … π and S…S interactions. In addition, magnetic, electrochemical, and spectroelectrochemistry properties for complex 1 have been studied.
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