Equilibrating magnetic dispersion and magnet homogeneity for the high-resolution proton nuclear magnetic resonance of monosubstituted naphthalenes

Accurate chemical shift and coupling constant for 1- and 2-naphthyl derivatives were decipher by iterative full spin analysis. Each of the seven magnetically nonequivalent H2-H8 atoms in 1-naphthyl derivatives, or of the H1, H3-H8 atoms in 2-naphthyl derivatives were unambiguously identified by anal...

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Published inSpectroscopy letters Vol. 55; no. 6; pp. 424 - 436
Main Authors Becerra-Martínez, Elvia, Pérez-Hernández, Nury, Sánchez-Zavala, Maricruz, Meléndez-Rodríguez, Myriam, Aristeo-Dominguez, Alberto, Suárez-Castillo, Oscar R., Joseph-Nathan, Pedro
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 03.07.2022
Taylor & Francis Ltd
Subjects
1-naphthyl derivatives
2-naphthyl derivatives
Chemical equilibrium
Coupling
Homogeneity
Iterative full spin analysis
long-range couplings
Magnetic dispersion
NMR
Nuclear magnetic resonance
proton nuclear magnetic resonance
Protons
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Summary:Accurate chemical shift and coupling constant for 1- and 2-naphthyl derivatives were decipher by iterative full spin analysis. Each of the seven magnetically nonequivalent H2-H8 atoms in 1-naphthyl derivatives, or of the H1, H3-H8 atoms in 2-naphthyl derivatives were unambiguously identified by analyzing their intra- and inter-ring coupling constants at 300 MHz and by two-dimensional homo- and heteronuclear experiments at 750 MHz. 13 C chemical shifts were also determined during this study, from where some literature ambiguities were resolved using long-range C-H correlations at 750 MHz. The complete proton nuclear magnetic resonance parameters are herein ascribed for the first time.
ISSN:0038-7010
1532-2289
DOI:10.1080/00387010.2022.2089684