Quality Control of 2-Chloropyridine 1-oxide. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 2-Chloropyridine 1-oxide, is researched, Molecular C5H4ClNO, CAS is 2402-95-1, about Broad single-minimum proton potential and proton polarizability of the hydrogen bonds in trifluoroacetic acid + pyridine N-oxide systems as a function of donor and acceptor properties and environment. Infrared studies. Author is Boehner, Ulrich; Zundel, Georg.
F3CCO2H + pyridine-N-oxide (1:1) system properties were studied in CCl4 and MeCN as functions of the basicity of the N-oxide. In CCl4, acid-base complexes are formed almost completely, whereas in MeCN the degree of complex formation increases with increasing basicity of the N-oxide. In the O-…H+…ON bonds, a single-min. proton potential is present, and if the degree of symmetry of this potential is sufficiently large continua indicate that these H bonds show a large proton polarizability caused by the fluctuating proton. The broad single-min. potential well shifts with increasing basicity of the N-oxide, from the donor to the acceptor. This shift is larger in MeCN solutions than in CCl4 solutions since in the polar solvent the interaction of the H-bond dipole with the reaction field induced by it in the solvent is larger.
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Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem