Synthesis,Structure, and Spectroscopic Properties of [Feiii(tnpa)(OH)(PhCOO)]ClO4: A Model Complex for an Active Form of Soybean Lipoxygenase-1

The cis configuration between the hydroxo and the carboxylato and the three amino groups of the tetradentate, tripodal ligand tris(6-neopentylamino-2-pyridylmethyl)amine favors the formation of hydrogen bonds which stabilize the hydroxo–Feⁱⁱⁱ complex 1 . Thus, its structure closely resembles that of the active center of Feⁱⁱⁱ –soybean lipoxygenase-1, which also contains a six-coordinate Feⁱⁱⁱ atom.