Quantitative evaluation of Lewis acidity of organotin compounds and the catalytic reactivity in electron transfer

Kei Ohkubo; Tomoyoshi Suenobu; Hiroshi Imahori; Akihiro Orita; Junzo Otera; Shunichi Fukuzumi

doi:10.1246/cl.2001.978

Quantitative evaluation of Lewis acidity of organotin compounds and the catalytic reactivity in electron transfer

Kei Ohkubo, Tomoyoshi Suenobu, Hiroshi Imahori, Akihiro Orita, Junzo Otera, Shunichi Fukuzumi

Department of Chemistry & Nanoscience

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

22 Scopus citations

Abstract

The g-values of ESR spectra of superoxide (O₂^·-) complexes with various organotin compounds acting as Lewis acids were determined in acetonitrile at 143 K. The binding energies (ΔΕ) in the complexes between organotins and O₂^·- have been evaluated from deviation of the g_zz-values from the free spin value. The ΔΕ values are well correlated with the catalytic reactivity of organotins as well as a series of metal ions acting as Lewis acids to promote electron transfer from cobalt(II) tetraphenylporphyrin to O₂, which would not occur in the absence of Lewis acids under otherwise the same experimental conditions.

Original language	English
Pages (from-to)	978-979
Number of pages	2
Journal	Chemistry Letters
Issue number	10
DOIs	https://doi.org/10.1246/cl.2001.978
State	Published - 2001

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title = "Quantitative evaluation of Lewis acidity of organotin compounds and the catalytic reactivity in electron transfer",

abstract = "The g-values of ESR spectra of superoxide (O2·-) complexes with various organotin compounds acting as Lewis acids were determined in acetonitrile at 143 K. The binding energies (ΔΕ) in the complexes between organotins and O2·- have been evaluated from deviation of the gzz-values from the free spin value. The ΔΕ values are well correlated with the catalytic reactivity of organotins as well as a series of metal ions acting as Lewis acids to promote electron transfer from cobalt(II) tetraphenylporphyrin to O2, which would not occur in the absence of Lewis acids under otherwise the same experimental conditions.",

author = "Kei Ohkubo and Tomoyoshi Suenobu and Hiroshi Imahori and Akihiro Orita and Junzo Otera and Shunichi Fukuzumi",

year = "2001",

doi = "10.1246/cl.2001.978",

language = "English",

pages = "978--979",

journal = "Chemistry Letters",

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T1 - Quantitative evaluation of Lewis acidity of organotin compounds and the catalytic reactivity in electron transfer

AU - Ohkubo, Kei

AU - Suenobu, Tomoyoshi

AU - Imahori, Hiroshi

AU - Orita, Akihiro

AU - Otera, Junzo

AU - Fukuzumi, Shunichi

PY - 2001

Y1 - 2001

N2 - The g-values of ESR spectra of superoxide (O2·-) complexes with various organotin compounds acting as Lewis acids were determined in acetonitrile at 143 K. The binding energies (ΔΕ) in the complexes between organotins and O2·- have been evaluated from deviation of the gzz-values from the free spin value. The ΔΕ values are well correlated with the catalytic reactivity of organotins as well as a series of metal ions acting as Lewis acids to promote electron transfer from cobalt(II) tetraphenylporphyrin to O2, which would not occur in the absence of Lewis acids under otherwise the same experimental conditions.

AB - The g-values of ESR spectra of superoxide (O2·-) complexes with various organotin compounds acting as Lewis acids were determined in acetonitrile at 143 K. The binding energies (ΔΕ) in the complexes between organotins and O2·- have been evaluated from deviation of the gzz-values from the free spin value. The ΔΕ values are well correlated with the catalytic reactivity of organotins as well as a series of metal ions acting as Lewis acids to promote electron transfer from cobalt(II) tetraphenylporphyrin to O2, which would not occur in the absence of Lewis acids under otherwise the same experimental conditions.

UR - http://www.scopus.com/inward/record.url?scp=0035541266&partnerID=8YFLogxK

U2 - 10.1246/cl.2001.978

DO - 10.1246/cl.2001.978

M3 - Article

AN - SCOPUS:0035541266

SN - 0366-7022

SP - 978

EP - 979

JO - Chemistry Letters

JF - Chemistry Letters

IS - 10

ER -

Quantitative evaluation of Lewis acidity of organotin compounds and the catalytic reactivity in electron transfer

Abstract

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