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ESR and ENDOR study of 2,3-dihydro-1-oxo-1λ4,2,3,5-thiatriazol-3-yl radicals

✍ Scribed by Franz A. Neugebauer

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
204 KB
Volume
30
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Dehydrogenation of 2,5‐dihydro‐1,2,3,5‐thiatriazole 1‐oxides with thermally formed bis(4‐methylphenyl)aminyl generated 2,3‐dihydro‐1‐oxo‐1λ^4^,2,3,5‐thiatriazol‐3‐yl radicals. ESR, ENDOR and triple resonance studies in combination with ^15^N labelling yielded the magnitude and assignment of all ^1^H and ^14^N hyperfine coupling (HFC) constants. The radicals have a basic five‐π‐electron amidrazon‐2‐yl structure with the highest spin density at N‐2.

📜 SIMILAR VOLUMES

2-(p-dimethylaminophenyl)indan-1,3-dione
2-(p-dimethylaminophenyl)indan-1,3-dione-2-yl radical: ENDOR and ESR studies and MNDO calculation
✍ M. V. Motyakin; L. M. Pisarenko; P. Schuler; H. B. Stegmann 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 321 KB

## Abstract ENDOR and ESR spectra of the 2‐(p‐Dimethylaminophenyl)indan‐1,3‐dione‐2‐yl radical were measured in toluene and diethyl phthalate at 350 K. A solvent dependence of the coupling constants was observed. Using the MNDO method, the optimized structure of the radical and the spin population