Binuclear lanthanide(III)-silver(I) f3-diketonate chelates are effective N M R shift and relaxation reagents for substrates containing one or two multiply bonded nitrogen atoms, despite the fact that some of the substrates are able to react with lanthanide chelates alone. The silver cation is bonded
✦ LIBER ✦
The 13C NMR of olefins complexed with a binuclear Ag(I)–Yb(III) chelate
✍ Scribed by William B. Smith
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 205 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The effect of silver ion complexation on the ^13^C NMR of several rigid olefin structures has been determined. The silver ion induced chemical shifts (AgIS) are not amenable to easy interpretation. Addition of Yb(fod)~3~ forms binuclear Ag–Yb complexes with the olefin. Lanthanide induced shifts (LIS) fall off rationally with distance from the site of complexation and the averaged position of the lanthanide. The complexes may be used as probes of olefin stereochemistry.
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M. Audit; D. Davoust; N. Goasdoue; N. Platzer
📂
Article
📅
1985
🏛
John Wiley and Sons
🌐
English
⚖ 645 KB