From model compounds to applications: Kinetic studies on the activation of dioxygen using an iron complex in a SuperFocus mixer

Miska, Andreas; Schurr, D.; Rinke, Günter; Dittmeyer, Roland; Schindler, Siegfried

doi:10.1016/j.ces.2018.05.064

Cited by 7 publications

(1 citation statement)

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“…[5b] This reaction was investigated in acetonitrile as well as in methanol leading to the same results. [6] Furthermore, the reaction of the mononuclear iron(III) complex [Fe-(bztpen)(OMe)](ClO 4 ) 2 (3(ClO 4 ) 2 ; bztpen = N-benzyl-N,N',N'-tris(2pyridylmethyl)ethane-1,2-diamine) with hydrogen peroxide had been analyzed. [7] An end-on hydroperoxido complex was formed that could be transformed into a side-on peroxido species after the addition of a base.…”

Section: Introductionmentioning

confidence: 99%

A Mechanistic Study on the Reaction of Non‐Heme Diiron(III)‐Peroxido Complexes with Benzoyl Chloride

et al. 2021

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Dinuclear iron peroxido complexes are important intermediates for selective oxidation reactions. A detailed kinetic study of the reaction of benzoyl chloride (BzCl) with a dinuclear iron nonheme cis end-on peroxido complex with the ligand EtHPTB (N,N,N',N'-tetrakis[(N-ethyl-2-benzimidazolyl)methyl]-2-hydroxy-1,3-diamino-propane) had been performed. The starting complex, the iron peroxido complex, can be obtained either by reaction of the iron(II) complex with O 2 or instead, applying the corresponding iron(III) complex together with hydrogen peroxide. Using low temperature stopped-flow measurements allowed to obtain activation parameters and in combination with a Hammet plot it was possible to postulate a mechanism for the formation of a perbenzoate complex prior to its decomposition. Furthermore, the direct reaction of the dinuclear iron(III) EtHPTB complex with peracetic acid was analyzed. Additionally, in comparison a mononuclear non-heme iron complex with the ligand bztpen (N-benzyl-N,N',N'-tris(2pyridylmethyl)ethane-1,2-diamine) was investigated as well.

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Section: Introductionmentioning

confidence: 99%

A Mechanistic Study on the Reaction of Non‐Heme Diiron(III)‐Peroxido Complexes with Benzoyl Chloride

et al. 2021

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Kinetic Investigation of the Reaction of Dioxygen with the Copper(I) Complex [Cu(Pim^iPr2)(CH₃CN)]CF₃SO₃ {Pim^iPr2 = Tris[2‐(1,4‐diisopropylimidazolyl)]phosphine}

et al. 2020

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Model complexes for copper proteins such as hemocyanin or tyrosinase have been investigated in detail during the last four decades due to their potential to become valuable catalysts for selective oxidations of organic substrates. However, so far most of these compounds can only be investigated in aprotic solvents at lower temperatures. Therefore, industrial applications on a larger scale are still missing. In contrast the copper(I) complex with the ligand tris[2‐(1,4‐diisopropylimidazolyl)]phosphine can form a quite stable dinuclear copper peroxido complex in the protic solvent methanol at room temperature. The kinetic analysis of the reaction of [Cu(PimiPr2)(CH3CN)]CF3SO3 with dioxygen in methanol is reported. The results allowed to obtain rate constants and activation parameters (ΔH# = 25 ± 2 kJ mol–1 and ΔS# = –121 ± 8 J mol–1 K–1) for the formation of the reactive intermediate, a mononuclear copper superoxido complex, prior to the consecutive reaction to a dinuclear peroxido complex.

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Determination of Kinetics for Reactive Bubbly Flows Using SuperFocus Mixers

Mierka

Turek

Rinke

et al. 2021

Reactive Bubbly Flows

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From model compounds to applications: Kinetic studies on the activation of dioxygen using an iron complex in a SuperFocus mixer

Cited by 7 publications

References 49 publications

A Mechanistic Study on the Reaction of Non‐Heme Diiron(III)‐Peroxido Complexes with Benzoyl Chloride

A Mechanistic Study on the Reaction of Non‐Heme Diiron(III)‐Peroxido Complexes with Benzoyl Chloride

Kinetic Investigation of the Reaction of Dioxygen with the Copper(I) Complex [Cu(Pim^iPr2)(CH₃CN)]CF₃SO₃ {Pim^iPr2 = Tris[2‐(1,4‐diisopropylimidazolyl)]phosphine}

Determination of Kinetics for Reactive Bubbly Flows Using SuperFocus Mixers

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From model compounds to applications: Kinetic studies on the activation of dioxygen using an iron complex in a SuperFocus mixer

Cited by 7 publications

References 49 publications

A Mechanistic Study on the Reaction of Non‐Heme Diiron(III)‐Peroxido Complexes with Benzoyl Chloride

A Mechanistic Study on the Reaction of Non‐Heme Diiron(III)‐Peroxido Complexes with Benzoyl Chloride

Kinetic Investigation of the Reaction of Dioxygen with the Copper(I) Complex [Cu(PimiPr2)(CH3CN)]CF3SO3 {PimiPr2 = Tris[2‐(1,4‐diisopropylimidazolyl)]phosphine}

Determination of Kinetics for Reactive Bubbly Flows Using SuperFocus Mixers

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Kinetic Investigation of the Reaction of Dioxygen with the Copper(I) Complex [Cu(Pim^iPr2)(CH₃CN)]CF₃SO₃ {Pim^iPr2 = Tris[2‐(1,4‐diisopropylimidazolyl)]phosphine}