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Tris (dipivalomethanato) europium - induced shifts in PMR oximes

โœ Scribed by Z.W. Wolkowski

Book ID
104247494
Publisher
Elsevier Science
Year
1971
Tongue
French
Weight
169 KB
Volume
12
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

Proton magnetic resonance has revealed itself as a method of choice in the investigation of isomeric oximes, since the anisotropy of the hydroxyimino group determines large chemical shift differences between syn and anti protons (1). Positive results in assignment by PMR have also been obtained from benzene-induced shifts (2)(3), protortation of oxime in solution (4) or complex formation with trimethylaluminium (5).

We wish to report a NMR technique which seems superior to hitherto used methods and consists in interaction with tris(dipivalomethanato)europium ( 6).

๐Ÿ“œ SIMILAR VOLUMES

Quantitation of the chemical shifts indu
Quantitation of the chemical shifts induced by tris(dipivalomethanato)europium III in the PMR spectra of hydroxyadamantanes and cyclopentanol
โœ Anthony F. Cockerill; David M. Rackham ๐Ÿ“‚ Article ๐Ÿ“… 1970 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 220 KB

Like Wahl and Peterson,' we have recently used the NMR shift reagent, tris(dipivalomethanato)europium III [Eu(dpm)JZp3 to simplify the spectra of 2-hydroxyadamantane and in addition we have also studied a variety of I-R-adamantanes(R = (CH2),CH, n= 1, 2, 3) and cyclopentanol. Wahl and Peterson have