The reaction of ferrimyoglobin with methylhydroperoxide

Mordechai L. Kremer

doi:10.1039/F19868202133

The reaction of ferrimyoglobin with methylhydroperoxide

Mordechai L. Kremer^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Methylhydroperoxide reacts with ferrimyoglobin in an irreversible reaction. In the course of the reaction two intermediates are formed in two consecutive steps. The experimental data are consistent with a mechanism in which MeOOH is dehydrated catalytically by ferrimyoglobin to yield CH₂O. MeOH is not formed in the system, even as a transient. The relative rate constants of the reaction have been evaluated: k₁ = 1 dm³ mol^-1 s^-1. k₂ = 2.23 × 10^-4 s^-1 and k₃ = 4.0 × 10^-6 s^-1. The molar absorptivities of the intermediates have been determined at λ = 549 nm: ε_I = 1.75 × 10⁴ dm³ mol^-1 cm^-1 and ε_II = 6.32 × 10³ dm³ mol^-1 cm^-1.

Original language	English
Pages (from-to)	2133-2140
Number of pages	8
Journal	Journal of the Chemical Society, Faraday Transactions I
Volume	82
Issue number	7
DOIs	https://doi.org/10.1039/F19868202133
State	Published - 1986

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title = "The reaction of ferrimyoglobin with methylhydroperoxide",

abstract = "Methylhydroperoxide reacts with ferrimyoglobin in an irreversible reaction. In the course of the reaction two intermediates are formed in two consecutive steps. The experimental data are consistent with a mechanism in which MeOOH is dehydrated catalytically by ferrimyoglobin to yield CH2O. MeOH is not formed in the system, even as a transient. The relative rate constants of the reaction have been evaluated: k1 = 1 dm3 mol-1 s-1. k2 = 2.23 × 10-4 s-1 and k3 = 4.0 × 10-6 s-1. The molar absorptivities of the intermediates have been determined at λ = 549 nm: εI = 1.75 × 104 dm3 mol-1 cm-1 and εII = 6.32 × 103 dm3 mol-1 cm-1.",

author = "Kremer, \{Mordechai L.\}",

year = "1986",

doi = "10.1039/F19868202133",

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T1 - The reaction of ferrimyoglobin with methylhydroperoxide

AU - Kremer, Mordechai L.

PY - 1986

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N2 - Methylhydroperoxide reacts with ferrimyoglobin in an irreversible reaction. In the course of the reaction two intermediates are formed in two consecutive steps. The experimental data are consistent with a mechanism in which MeOOH is dehydrated catalytically by ferrimyoglobin to yield CH2O. MeOH is not formed in the system, even as a transient. The relative rate constants of the reaction have been evaluated: k1 = 1 dm3 mol-1 s-1. k2 = 2.23 × 10-4 s-1 and k3 = 4.0 × 10-6 s-1. The molar absorptivities of the intermediates have been determined at λ = 549 nm: εI = 1.75 × 104 dm3 mol-1 cm-1 and εII = 6.32 × 103 dm3 mol-1 cm-1.

AB - Methylhydroperoxide reacts with ferrimyoglobin in an irreversible reaction. In the course of the reaction two intermediates are formed in two consecutive steps. The experimental data are consistent with a mechanism in which MeOOH is dehydrated catalytically by ferrimyoglobin to yield CH2O. MeOH is not formed in the system, even as a transient. The relative rate constants of the reaction have been evaluated: k1 = 1 dm3 mol-1 s-1. k2 = 2.23 × 10-4 s-1 and k3 = 4.0 × 10-6 s-1. The molar absorptivities of the intermediates have been determined at λ = 549 nm: εI = 1.75 × 104 dm3 mol-1 cm-1 and εII = 6.32 × 103 dm3 mol-1 cm-1.

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JO - Journal of the Chemical Society, Faraday Transactions I

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IS - 7

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The reaction of ferrimyoglobin with methylhydroperoxide

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