Reaction of a sterically encumbered iron(i) aryl/arene with organoazides: formation of an iron(v) bis(imide)†,10.1039/B810941A

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Reaction of a sterically encumbered iron(i) aryl/arene with organoazides: formation of an iron(v) bis(imide)†

Chengbao Ni,James C. Fettinger,Gary J. Long,Marcin Brynda,Philip P. Power

Chemical Communications Pub Date : 10/21/2008 00:00:00 , DOI:10.1039/B810941A

Abstract

Reaction of 3,5-Prⁱ₂Ar*Fe(η⁶-C₆H₆)(3,5-Prⁱ₂Ar* = C₆H₁-2,6-(C₆H₂-2,4,6-Prⁱ₃)₂-3,5-Prⁱ₂) with N₃C₆H₃-2,6-Mes₂ (Mes = C₆H₂-2,4,6-Me₃) afforded the dimeric iron(II) amido/aryl complex {CH₂C₆H₂-2(C₆H₃-2-N(H)FeAr*-3,5-Prⁱ₂)-3,5-Me₂}₂ (1) which arises viamethyl hydrogen abstraction by nitrogen and dimerization of the radical via C–C bond formation; in contrast, reaction of 3,5-Prⁱ₂Ar*Fe(η⁶-C₆H₆) with N₃(1-Ad) (1-Ad = 1-adamantanyl) gave the iron(V) bis(imido) complex 3,5-Prⁱ₂Ar*Fe{N(1-Ad)}₂ (2).