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Substituent effects on ESR parameters of α-phenyl-N-tert-butylnitrone spin adducts. Resolution enhancement and mass spectrometry (1993)

Pan, Kai ; Lin, Chiou-Rong ; Ho, Tong-Ing

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 31 (1993), S. 632-638

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Details

ISSN: 0749-1581

Schlagwort(e): ESR ; Spin adducts ; Spin trapping ; Mass spectrometry ; α-Phenyl-N-tert-butylnitrones ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The combination of high-performance liquid chromatography (HPLC) and ESR spectrometry was used to isolate the free radicals produced by the reaction of a Grignard reagent with 15 substituted α-Phenyl-N-tert-butylnitrone. Long-range hyperfine splitting constants (hfsc) were obtained by the resolution enhancement method. Linear correlation studies between hfsc and Hammett σp constants are reported. Dual-parameter correlations using σR and σI were also studied. The mass spectra for the HPLC-isolated spin adducts and their fragmentation patterns are reported.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/mrc.1260310705

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