Mimicking reactive high-valent diiron-μ₂-oxo intermediates of nonheme enzymes by an iron tetracarbene complex

Abstract

The first diiron(III,IV)-μ2-oxo tetracarbene complex is isolated and characterized by SC-XRD, UV/Vis, EPR, Evans’ NMR and elemental analysis. CV indicates the presence of a transient high-valent diiron(IV)-μ2-oxo species. Its formation...

The first macrocyclic abnormally coordinating tetra-1,2,3-triazole-5-ylidene iron complex: a promising candidate for olefin epoxidation

“…ThPF 6 as one-electron oxidising agent has been successfully used for the selective oxidation of iron(II) to iron(III) complexes. 23,51,52 The measured UV/Vis spectrum shows the disappearance of the two absorption bands by generating a new band around 431 nm, indicating the occurrence of an oxidation process (Fig. 3).…”

Organometallic chemistry confined within a porphyrin-like framework

“…244 It opens a route to interesting coordination chemistry on its own. 256–258 The formed tetracarbene dicationic complex S115-1 (Scheme 115) demonstrates the features of the diamagnetic low-spin iron( ii ) electronic state (the Fe–C distances of ca. 1.91 Å).…”

Organometallic Chemistry within the Structured Environment Provided by the Macrocyclic Cores of Carbaporphyrins and Related Systems

“…Silver and gold cluster complexes of 457 were also reported. Reaction of 457 with bis[bis(trimethylsilyl)amido]iron(II) gave iron(II) complex 461a [ 282 , 283 , 284 , 285 ], while treatment with cobalt(II) chloride afforded 461b [ 286 ]. Both of these complexes initially reacted with O 2 to give dioxygen complexes.…”