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15N NMR shifts for imidazole and 1-methyl imidazole in CH2Cl2 relative to aqueous solution

✍ Scribed by Mohammed Alei Jr.; William E Wageman

Book ID: 104244655
Publisher: Elsevier Science
Year: 1979
Tongue: French
Weight: 187 KB
Volume: 20
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)93540-3

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✦ Synopsis

The l5 N NMR frequencies for imidazole nitrogens undergo significant shifts when imidazole or l-methyl imidazole is taken from aqueous to CH2Cl2 solution. This shift is probably primarily due to strong hydrogen-bonding between 15N3 of imidazole and H20 protons in aqueous solution. It has been known for some time 2,3,4 that hydrogen-bonding interactions involving nitrogen lone-pair electrons can produce measurable 15 N NMR shffts.

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✍ Alei, M.; Morgan, L. O.; Wageman, W. E.; Whaley, T. W. 📂 Article 📅 1980 🏛 American Chemical Society 🌐 English ⚖ 805 KB