Redox Chemistry of Bis(phosphaethenyl)pyridine Iron Complexes
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https://figshare.com/articles/dataset/Redox_Chemistry_of_Bis_phosphaethenyl_pyridine_Iron_Complexes/2541865
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资源简介：
Redox reactions of iron complexes bearing a PNP-pincer-type
phosphaalkene ligand, 2,6-bis[1-phenyl-2-(2,4,6-tri-tert-butylphenyl)-2-phosphaethenyl]pyridine (BPEP), are reported. The
Fe(II) dibromide [FeBr2(BPEP)] (1) is readily
reduced by [Cp2Co] to afford the four-coordinate Fe(I)
monobromide [FeBr(BPEP)] (2), while 2 reacts
with PhCH2Br to reproduce 1. Treatment of 1 with MesMgBr or Mes2Mg(THF)2 (Mes
= 2,4,6-Me3C6H2) results in one-electron
reduction of 1, followed by transmetalation of the resulting 2 with mesitylmagnesium compounds to give the Fe(I) mesityl
complex [FeMes(BPEP)] (3). The single-crystal diffraction
study of 3 has revealed a distorted trigonal monopyramidal
arrangement around the iron center. SQUID magnetometry has established
a low-spin ground state (S = 1/2) of 3. Complex 2 reacts with Me2Mg(THF)2 to afford Fe(0) and Fe(II) complexes (4 and 5, respectively) coordinated with novel multidentate ligand systems
containing a phosphonium ylide structure. The formation processes
of 4 and 5 via an [FeMe(BPEP)] intermediate
are discussed on the basis of their X-ray structures.
创建时间：
2012-03-12
