Tris(dipivaloylmethanato)europium induced shifts of proton resonances in π-deficient nitrogen heterocycles

✍ Scribed by W. L. F. Armarego; T. J. Batterham; J. R. Kershaw

• Book ID: 102526170
• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 447 KB
• Volume: 3
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1270030512

✦ Synopsis

Tris(dipivaloy1methanato)europium

[Eu(DPM),] induced shifts of the proton resonances of pyridine and its 2-methy1, 3-methy1, 2,3-dimethyl and 2,5-dimethyl derivatives, pyridazine, pyrimidine, pyrazine, quinoline, isoquinoline, 1,6-, 1,7-and 1 &naphthyridine, cinnoline, phthalazine, quinazoline, quinoxaline, 1,4,5-and 1,4,6-triazanaphthalene, pteridine, acridine, phenanthridine and 1 ,lo-phenanthroline, have been measured for solutions containing 0.1, 0.3 and 0.5 molar equivalents of Eu(DPM),. Differences in the behaviour of these heterocycles are discussed in terms