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An 15N NMR study of the protonation of two di-(α-pyridyl) compounds in solutions and the solid state

✍ Scribed by J. Klimkiewicz; L. Stefaniak; E. Grech; G.A. Webb; I. Wawer

Book ID
104357806
Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
252 KB
Volume
7
Category
Article
ISSN
0926-2040

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✦ Synopsis

15N NMR data are reported for two Di-(alpha-pyridyl) derivatives in various stages of protonation. A combination of 15N NMR measurements taken, on a number of solutions, and on the solid state provide a quantitative overall view of the progress of protonation of these compounds. 15N shieldings, J(15N-1H) and 2J (15N-1H) interactions all provide information indicative of unsymmetrical monoprotonation in the solid state and producing both the monoprotonated [N-H-N]+ structure and the diprotonated structure in the presence of an excess of TFA.

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