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3,6,9‐trioxanthracenes and 3,6‐dioxa‐9‐thianthracenes: Conformational analysis and complete assignment of 13 C NMR spectra
Author(s) -
MorenoMañas Marcial,
Ribas Jordi,
SánchezFerrando Francisco,
Virgili Albert
Publication year - 1987
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260251112
Subject(s) - heteronuclear molecule , chemistry , multiplicity (mathematics) , coupling constant , spectral line , nuclear magnetic resonance spectroscopy , nmr spectra database , pulse sequence , crystallography , two dimensional nuclear magnetic resonance spectroscopy , decoupling (probability) , j coupling , carbon 13 nmr satellite , nuclear magnetic resonance , spectroscopy , analytical chemistry (journal) , stereochemistry , fluorine 19 nmr , physics , organic chemistry , geometry , mathematics , particle physics , astronomy , control engineering , quantum mechanics , engineering
The 20.15 MHz 13 C NMR spectra of five 3,6,9‐trioxanthracenes and four 3,6‐dioxa‐9‐thianthracenes have been assigned using a variety of one‐dimensional techniques. These include spin‐echo multiplicity sorting (SEFT), long‐range heteronuclear coupling constant determination via gated decoupling and selective heteronuclear 13 C{ 1 H} NOE difference spectroscopy. The axial position of substituents on C‐10 has been demonstrated.