So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Hansen, Poul Erik; Spanget-Larsen, Jens researched the compound: 8-Hydroxyquinoline 1-oxide( cas:1127-45-3 ).Product Details of 1127-45-3.They published the article 《On prediction of OH stretching frequencies in intramolecularly hydrogen bonded systems》 about this compound( cas:1127-45-3 ) in Journal of Molecular Structure. Keywords: intramol hydrogen bond stretching frequency hydroxyquinoline oxide. We’ll tell you more about this compound (cas:1127-45-3).
OH stretching frequencies are investigated for a series of non-tautomerizing systems with intramol. hydrogen bonds. Effective OH stretching wavenumbers are predicted by the application of empirical correlation procedures based on the results of B3LYP/6-31G(d) theor. calculations in the harmonic and PT2 anharmonic approximations, as well as on exptl. NMR parameters, i.e., proton chem. shifts (δ H) and two-bond deuterium isotope effects on 13C chem. shifts (2ΔCOD). The procedures are applied in a discussion of the spectra of 2,6-dihydroxy-4-methylbenzaldehyde and 8-hydroxyquinoline N-oxide. The spectrum of the former displays a broad, composite band between 3500 and 2500 cm-1 which can be assigned to overlapping monomer and dimer contributions. In the latter case, the results support a reassignment of the OH stretching band of 8-hydroxyquinoline N-oxide; the reassignment is supported by correlation with the IR spectra of a series of substituted derivatives
In some applications, this compound(1127-45-3)Product Details of 1127-45-3 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider