Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about Solvent effect on the intramolecular hydrogen bond in 8-quinolinol N-oxide.Safety of 8-Hydroxyquinoline 1-oxide.
Solvent effect on intramol. hydrogen bond in 8-quinolinol N-oxide has been studied by IR, UV, 1H NMR and 13C NMR spectroscopy, dipole moment measurements and quantum-mech. calculations The solute-solvent interactions are of local character and they vary considerably over the range of solvent under study. The results suggest that formation complexes with solvent mols. weaken the intramol. hydrogen bond in 8-quinolinol N-oxide.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider