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Second-order effects in proton solution endor

✍ Scribed by J.C. Evans; A.Y. Obaid; C.C. Rowlands

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
369 KB
Volume
109
Category
Article
ISSN
0009-2614

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✦ Synopsis

The rsdical cation of6-hydrodipyrido-j1,2-c:2',l'c]-imidazolium iodide (monomethylene diquat) has been investigated using ESR, ENDOR and triple resonance. The bridge rncthylcne protons have B large hyperfinc coupling constant (2.46 mT) and show second-order interaction both in the ESR and ENDOR spectra. The relative signs of the coupling constants were obtained using triple resonance. The observed ENDOR second-order splitting (0.009 mT) together with the lint positions arc in complete agrcemcnt with theoretical prediction.

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