Functional
Mononitrosyl Diiron(II) Complex Mediates
the Reduction of NO to N<sub>2</sub>O with Relevance for Flavodiiron
NO Reductases
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Abstract
Reaction of [Fe<sub>2</sub>(<i>N</i>-Et-HPTB)(CH<sub>3</sub>COS)](BF<sub>4</sub>)<sub>2</sub> (<b>1</b>) with (NO)(BF<sub>4</sub>) produces
a nonheme mononitrosyl diiron(II) complex, [Fe<sub>2</sub>(<i>N</i>-Et-HPTB)(NO)(DMF)<sub>3</sub>](BF<sub>4</sub>)<sub>3</sub> (<b>2</b>). Complex <b>2</b> is
the first example of a [Fe<sup>II</sup>{Fe(NO)}<sup>7</sup>] species
and is also the first example of a mononitrosyl diiron(II) complex
that mediates the reduction of NO to N<sub>2</sub>O. This work describes
the selective synthesis, detailed characterization and NO reduction
activity of <b>2</b> and thus provides new insights regarding
the mechanism of flavodiiron nitric oxide reductases
