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NMR analysis, cytotoxic activity and theoretical study of a complex between SRPIN340 and p-sulfonic acid

Lívia Cristina de Souza Viol1, Natália Aparecida Liberto Silva1, Cristiane Isaac Cerceau1

  • 1Departamento de Química, Universidade Federal de Viçosa, Viçosa 36570-900, MG, Brazil.

Future Medicinal Chemistry
|July 1, 2024
PubMed

Keywords:
NMR quantificationSRPIN340aqueous solubilitycalix[6]arenecancertheoretical study

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¹H NMR: Complex Splitting01:13

¹H NMR: Complex Splitting

A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.