[N,N′-Bis(2,6-diisopropylphenyl)acenaphthene-1,2-diimine-1κ²N,N′]heptacarbonyl-1κC,2κ³C,3κ³C-di-μ₃-tellurido-triiiron(II)(2Fe—Fe)

Abstract

The sterically hindered title complex, [Fe(3)Te(2)(C(36)H(40)N(2))(CO)(7)], was obtained by substitution of two carbonyl groups in the [Fe(3)(μ(3)-Te)(2)(CO)(9)] cluster by the bulky redox-active N,N'-bis(2,6-diisopropylphenyl)acenaphthene-1,2-diimine (dpp-BIAN) ligand. The asymmetric unit contains two molecules of the same geometry. The C=N bond lengths in dpp-BIAN indicate a rather low level of electron transfer from the cluster core to the dpp-BIAN ligand.

Redox‐Active BIAN‐Based Iron Complexes in Catalysis

“…Another interesting example in the iron coordination chemistry of BIAN was disclosed by Piryazev and coworkers in 2012 [33] . In this report, they highlight the ability of BIAN ligands to support an iron‐based cluster.…”

“…[32] Another interesting example in the iron coordination chemistry of BIAN was disclosed by Piryazev and coworkers in 2012. [33] In this report, they highlight the ability of BIAN ligands to support an iron-based cluster. The cluster compound Fe 3 (μ 3 -Te) 2 ( Dipp BIAN)(CO) 7 ] (Complex 37, Scheme 6) was obtained by direct ligand substitution of [Fe 3 (μ 3 -Te) 2 (CO) 9 ] with one equivalent of Dipp BIAN.…”

“…Since then, notable progress has been made in this area. A number of structural studies have been reported which describe the structural, optoelectronic, and electrochemical characterization of this class of compound [8,9a,23–25,33–36] …”

Ferrous complexes supported by sterically encumbered asymmetric bis(arylimino)acenaphthene (BIAN) ligands: synthesis, characterization and screening for catalytic hydrosilylation of carbonyl compounds

“…19 Other known BIAN-Fe compounds usually involve identical aryl N-substituents (Mes or Dipp), featuring mononuclear, 20,21 dinuclear 22 or multinuclear structural motifs. 23 It was discovered that the radical anionic form of BIAN ligands could be installed to Fe(II) centers through the treatment of FeI 2 with various molar ratio of potassium salt of the radical anion. 22 Findlater and co-workers reported the structure of a toluene-capped low-valent iron complex supported by a partially reduced BIAN ligand, i.e.…”