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)

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Resolved electron-electron coupling is observed in the room temperature solution EPR spectra of the spin-labeled copper complex (3-(A'-(3-2, 2, 5, 5-tetramethylpyrroline-l-oxyl)amido)-4, 9-dimethyl-5, 8-diazadodeca-4, 8-diene-2, l 1-dione)-copper(II). Values of the coupling constant at room temperature vary with solvent (toluene, CH2CI2, THF, 1:1 THF-CH2C12, 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
DOIs
Publication statusPublished - 1979

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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