Dynamic NMR Spectroscopy
2005; Elsevier BV; Linguagem: Inglês
10.1016/b978-044451811-8.50008-5
Autores Tópico(s)Molecular spectroscopy and chirality
ResumoThis chapter describes on how the NMR spectroscopy can be used as a powerful tool for observing the dynamic processes that may be occurring in thin or between molecules. The processes include, bond rotation, bond axes, ring inversion, and tautomerism (intramolecular and intermolecular exchange of nuclei between the functional groups). All these dynamic processes result in changes of the chemical environment, and these changes appear in NMR spectra as a change in chemical shift and coupling constant. The basic theories explain the processes of an electrolytic reaction between molecules say, A and B. The chapter discusses the cases for fast exchange and slow exchange. Exercises are provided toward the end to determine the structure of the compounds whose NMR spectra and molecular formulae are given for the reader.
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