Reduction of Nitrite to Nitric Oxide by Tetranuclear Iron(II)-Polychalcogenides: Direct Reduction by Iron(II) vs the Reaction of Nitrite with Coordinated Polychalcogenides.

The complexes, [Fe2(HPTP)(EPh)2]1+ (E = S, 2a; Se, 2b), [Fe4(HPTP)2(S3)(S6)]2+ (3) and [Fe4(HPTP)2(Se3)2]2+ (4), directly reduced nitrite (NO2-) to nitric oxide (NO) and generated the DNICs, [Fe(EPh)2(NO)2]1- and [Fe(E5)(NO)2]1- (E = S, Se), respecti…

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