Synthesis and characterization of [Co(NO2)2(acac) (IMH2py)] with one-electron-reduced imino nitroxide radical associated with unusual displacement of acetylacetonate in the starting complex trans-Na[Co(NO2)2(acac)2]

Terukazu Ishida; Takayoshi Suzuki; Sumio Kaizaki

doi:10.1016/j.ica.2004.03.031

Synthesis and characterization of [Co(NO₂)₂(acac) (IMH2py)] with one-electron-reduced imino nitroxide radical associated with unusual displacement of acetylacetonate in the starting complex trans-Na[Co(NO₂)₂(acac)₂]

Terukazu Ishida, Takayoshi Suzuki, Sumio Kaizaki

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

7 Citations (Scopus)

Abstract

A reaction of trans-Na[Co(NO₂)₂(acac)₂] with IM2py(2(2^′-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazol-1-oxyl) in methanol afforded trans-[Co(NO₂) ₂(acac)(IMH2py)](IMH2py=1-hydroxyl-2(2^′-pyridyl)-4, 4,5,5-tetramethyl-4,5-dihydro-1H-imidazole); one-electron reduction of the N-O radical moiety in IM2py and displacement of one of the two acac ligands with retention of two nitrito ligands in the starting complex during the reaction. This new complex was characterized by UV-Vis, ¹H NMR spectra and X-ray analysis.

Original language	English
Pages (from-to)	3134-3138
Number of pages	5
Journal	Inorganica Chimica Acta
Volume	357
Issue number	11
DOIs	https://doi.org/10.1016/j.ica.2004.03.031
Publication status	Published - Aug 5 2004
Externally published	Yes

Keywords

Co(III) complex
Hydroxylamine tautomer
Imino nitroxide radical
Reduced imino nitroxide radical

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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Synthesis and characterization of [Co(NO₂)₂(acac) (IMH2py)] with one-electron-reduced imino nitroxide radical associated with unusual displacement of acetylacetonate in the starting complex trans-Na[Co(NO₂)₂(acac)₂]. / Ishida, Terukazu; Suzuki, Takayoshi; Kaizaki, Sumio.

In: Inorganica Chimica Acta, Vol. 357, No. 11, 05.08.2004, p. 3134-3138.

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

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title = "Synthesis and characterization of [Co(NO2)2(acac) (IMH2py)] with one-electron-reduced imino nitroxide radical associated with unusual displacement of acetylacetonate in the starting complex trans-Na[Co(NO2)2(acac)2]",

abstract = "A reaction of trans-Na[Co(NO2)2(acac)2] with IM2py(2(2′-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazol-1-oxyl) in methanol afforded trans-[Co(NO2) 2(acac)(IMH2py)](IMH2py=1-hydroxyl-2(2′-pyridyl)-4, 4,5,5-tetramethyl-4,5-dihydro-1H-imidazole); one-electron reduction of the N-O radical moiety in IM2py and displacement of one of the two acac ligands with retention of two nitrito ligands in the starting complex during the reaction. This new complex was characterized by UV-Vis, 1H NMR spectra and X-ray analysis.",

keywords = "Co(III) complex, Hydroxylamine tautomer, Imino nitroxide radical, Reduced imino nitroxide radical",

author = "Terukazu Ishida and Takayoshi Suzuki and Sumio Kaizaki",

year = "2004",

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doi = "10.1016/j.ica.2004.03.031",

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T1 - Synthesis and characterization of [Co(NO2)2(acac) (IMH2py)] with one-electron-reduced imino nitroxide radical associated with unusual displacement of acetylacetonate in the starting complex trans-Na[Co(NO2)2(acac)2]

AU - Ishida, Terukazu

AU - Suzuki, Takayoshi

AU - Kaizaki, Sumio

PY - 2004/8/5

Y1 - 2004/8/5

N2 - A reaction of trans-Na[Co(NO2)2(acac)2] with IM2py(2(2′-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazol-1-oxyl) in methanol afforded trans-[Co(NO2) 2(acac)(IMH2py)](IMH2py=1-hydroxyl-2(2′-pyridyl)-4, 4,5,5-tetramethyl-4,5-dihydro-1H-imidazole); one-electron reduction of the N-O radical moiety in IM2py and displacement of one of the two acac ligands with retention of two nitrito ligands in the starting complex during the reaction. This new complex was characterized by UV-Vis, 1H NMR spectra and X-ray analysis.

AB - A reaction of trans-Na[Co(NO2)2(acac)2] with IM2py(2(2′-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazol-1-oxyl) in methanol afforded trans-[Co(NO2) 2(acac)(IMH2py)](IMH2py=1-hydroxyl-2(2′-pyridyl)-4, 4,5,5-tetramethyl-4,5-dihydro-1H-imidazole); one-electron reduction of the N-O radical moiety in IM2py and displacement of one of the two acac ligands with retention of two nitrito ligands in the starting complex during the reaction. This new complex was characterized by UV-Vis, 1H NMR spectra and X-ray analysis.

KW - Co(III) complex

KW - Hydroxylamine tautomer

KW - Imino nitroxide radical

KW - Reduced imino nitroxide radical

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JF - Inorganica Chimica Acta

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