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The effect of paramagnetic metal ions on proton-decoupled C-13 NMR intensities

✍ Scribed by G.N. la Mar

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
330 KB
Volume
10
Category
Article
ISSN
0009-2614

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✦ Synopsis

The C-1 3 nuclear Ove&wer e~~rne~t 0 in Proto decoupled NMR spectra is redu& by pammagnetic metal ions. The similarity of the Iimiting intensities for various ions suggests the NOE is quantitatively eliminated, with the "three &n effect" relatively urimportaJ&

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Carbon-13 isotope effect on proton decou
Carbon-13 isotope effect on proton decoupled 13C and 31P n.m.r. spectra of bis(diphenylphosphino)acetylene
✍ R. Paasonen; J. Enqvist; M. Karhu; E. Rahkamaa; M. Sundberg; R. Uggla πŸ“‚ Article πŸ“… 1978 πŸ› John Wiley and Sons 🌐 English βš– 196 KB

## Abstract High resolution proton decoupled ^13^C and ^31^P n.m.r. spectra of bis(diphenylphosphino)acetylene in (CD~3~)~2~SO and CDCl~3~ are analysed as ABX spectra to give the relative chemical shifts of the ^13^C and ^31^P nuclei as well as the spin–spin coupling constants ^3^__J__(PP) and ^__n