Electron paramagnetic resonance spectroscopic study of radical cations from hydrazine, methylhydrazine, and dimethylhydrazines


Journal Article

The substrates hydrazine, methylhydrazine, 1,1-dimethylhydrazine, and 1,2-dimethylhydrazine have been investigated in turn within an aqueous continuous-flow system at 25 ± 2° using the titanous chloride-hydrogen peroxide radical-generating method. For each hydrazine the electron paramagnetic resonance spectrum of the corresponding monopositive radical ion was the only one observed, viz. [NH2NH2]·+, [CH3NHNH2]·+, [(CH3)2NNH2]·+, [cis-CH3NHNHCH3]·+, and [trans-CH3NHNHCH3]·+. The hydrogen and nitrogen nuclear hyperfine coupling constants of these radical cations have been determined and discussed in terms of the σ-π interaction theories of Karplus and Fraenkel and McConnell. Values for several empirically calculated spin-polarization parameters are presented.

Full Text

Duke Authors

Cited Authors

  • Smith, P; Stevens, RD; Kaba, RA

Published Date

  • January 1, 1971

Published In

Volume / Issue

  • 75 / 13

Start / End Page

  • 2048 - 2055

International Standard Serial Number (ISSN)

  • 0022-3654

Digital Object Identifier (DOI)

  • 10.1021/j100682a024

Citation Source

  • Scopus