Volume 60, Issue 39 pp. 21221-21225
Communication

Direct NO Reduction by a Biomimetic Iron(II) Pyrazolate MOF

Dr. Zhongzheng Cai

Dr. Zhongzheng Cai

Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210 USA

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Dr. Wenjie Tao

Dr. Wenjie Tao

Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210 USA

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Dr. Curtis E. Moore

Dr. Curtis E. Moore

Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210 USA

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Prof. Dr. Shiyu Zhang

Prof. Dr. Shiyu Zhang

Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210 USA

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Prof. Dr. Casey R. Wade

Corresponding Author

Prof. Dr. Casey R. Wade

Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210 USA

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First published: 02 August 2021
Citations: 23

Graphical Abstract

A novel iron(II) metal–organic framework containing accessible coordination sites on adjacent metal centers facilitates the direct reduction of NO to N2O.

Abstract

A novel metal-organic framework (MOF) containing one-dimensional, Fe2+ chains bridged by dipyrazolate linkers and N,N-dimethylformamide (DMF) ligands has been synthesized. The unusual chain-type metal nodes feature accessible coordination sites on adjacent metal centers, resulting in motifs that are reminiscent of the active sites in non-heme diiron enzymes. The MOF facilitates direct reduction of nitric oxide (NO), producing nearly quantitative yields of nitrous oxide (N2O) and emulating the reactivity of flavodiiron nitric oxide reductases (FNORs). The ferrous form of the MOF can be regenerated via a synthetic cycle involving reduction with cobaltocene (CoCp2) followed by reaction with trimethylsilyl triflate (TMSOTf).

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