Metal-nitroxyl interactions. 8. Exchange interactions in a spin-labeled copper complex (3-(N-(3-2,2,5,5-tetramethylpyrroline-1-oxyl)amido)-4,9-dimethyl-5,8- diazadodeca-4,8-diene-2,11-dione)copper(II)

Daniel L DuBois, G. R. Eaton, S. S. Eaton

Research output: Contribution to journal › Article

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Abstract

Resolved electron-electron coupling is observed in the room temperature solution EPR spectra of the spin-labeled copper complex (3-(N-(3-2,2,5,5-tetramethylpyrroline-1-oxyl)amido)-4,9-dimethyl-5,8- diazadodeca-4,8-diene-2,11-dione)-copper(II). Values of the coupling constant at room temperature vary with solvent (toluene, CH2Cl2,THF, 1:1 THF-CH2Cl2, CHCl3, pyridine, Me2SO, 1:1 toluene-acetone, and 10:1 toluene-THF), ranging from 475 G (0.0454 cm-1) in THF to 520 G (0.0496 cm-1) in Me2SO. The coupling constant is also temperature dependent with values changing from 525 G (0.0501 cm-1) at -20°C to 472 G (0.0451 cm-1) at 119°C in toluene solution.

Original languageEnglish
Pages (from-to)2624-2627
Number of pages4
JournalJournal of the American Chemical Society
Volume101
Issue number10
Publication statusPublished - 1979

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Exchange interactions
Toluene
Copper
Metals
Temperature
Electrons
Acetone
Pyridine
Paramagnetic resonance
nitroxyl

ASJC Scopus subject areas

  • Chemistry(all)

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Metal-nitroxyl interactions. 8. Exchange interactions in a spin-labeled copper complex (3-(N-(3-2,2,5,5-tetramethylpyrroline-1-oxyl)amido)-4,9-dimethyl-5,8- diazadodeca-4,8-diene-2,11-dione)copper(II). / DuBois, Daniel L; Eaton, G. R.; Eaton, S. S.

In: Journal of the American Chemical Society, Vol. 101, No. 10, 1979, p. 2624-2627.

Research output: Contribution to journal › Article

DuBois, DL, Eaton, GR & Eaton, SS 1979, 'Metal-nitroxyl interactions. 8. Exchange interactions in a spin-labeled copper complex (3-(N-(3-2,2,5,5-tetramethylpyrroline-1-oxyl)amido)-4,9-dimethyl-5,8- diazadodeca-4,8-diene-2,11-dione)copper(II)', Journal of the American Chemical Society, vol. 101, no. 10, pp. 2624-2627.
DuBois DL, Eaton GR, Eaton SS. Metal-nitroxyl interactions. 8. Exchange interactions in a spin-labeled copper complex (3-(N-(3-2,2,5,5-tetramethylpyrroline-1-oxyl)amido)-4,9-dimethyl-5,8- diazadodeca-4,8-diene-2,11-dione)copper(II). Journal of the American Chemical Society. 1979;101(10):2624-2627.
DuBois, Daniel L ; Eaton, G. R. ; Eaton, S. S. / Metal-nitroxyl interactions. 8. Exchange interactions in a spin-labeled copper complex (3-(N-(3-2,2,5,5-tetramethylpyrroline-1-oxyl)amido)-4,9-dimethyl-5,8- diazadodeca-4,8-diene-2,11-dione)copper(II). In: Journal of the American Chemical Society. 1979 ; Vol. 101, No. 10. pp. 2624-2627.
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AB - Resolved electron-electron coupling is observed in the room temperature solution EPR spectra of the spin-labeled copper complex (3-(N-(3-2,2,5,5-tetramethylpyrroline-1-oxyl)amido)-4,9-dimethyl-5,8- diazadodeca-4,8-diene-2,11-dione)-copper(II). Values of the coupling constant at room temperature vary with solvent (toluene, CH2Cl2,THF, 1:1 THF-CH2Cl2, CHCl3, pyridine, Me2SO, 1:1 toluene-acetone, and 10:1 toluene-THF), ranging from 475 G (0.0454 cm-1) in THF to 520 G (0.0496 cm-1) in Me2SO. The coupling constant is also temperature dependent with values changing from 525 G (0.0501 cm-1) at -20°C to 472 G (0.0451 cm-1) at 119°C in toluene solution.

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