Rapid nitrite reduction enabled by secondary sphere hydrogen bonds within non-heme iron complexes.
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ABSTRACT: A non-heme iron(ii) complex bearing a ligand with secondary sphere hydrogen bond (H-bond) donors, (tris(6-phenylaminopyridylmethyl)amine, TPANHPh, rapidly reduces nitrite (NO2 -) to nitric oxide (NO) in the absence of exogenous additives, affording a Fe(iii)2(μ-O)2 diamond core. An electronically analogous complex containing a ligand without H-bonds (tris(6-methylpyridylmethylamine), TPAMe, also reduces NO2 - to NO and forms an Fe(iii)2(μ-O)2 core, but is four orders of magnitude slower, highlighting the impact of H-bonds to promote NO2 - reduction. We compare the structural and spectroscopic differences of the two Fe(iii)2(μ-O)2 complexe
SUBMITTER: LaDuca AR
PROVIDER: S-EPMC12421430 | biostudies-literature | 2025 Aug
REPOSITORIES: biostudies-literature
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