Nuclear quadrupole resonance in 5-membered heterocycles: Pyrazole, imidazole, 1, 2, 4-triazole
作者： E. Schempp , P.J. Bray
DOI: 10.1016/0375-9601(67)90054-0
关键词: Ring (chemistry) 、 1,2,4-Triazole 、 Nuclear magnetic resonance 、 Coupling constant 、 Pyrazole 、 Imidazole 、 Quadrupole 、 Meta- 、 Crystallography 、 Nuclear quadrupole resonance 、 Physics
摘要: Abstract Nitrogen-14 nuclear quadrupole coupling constants and asymmetry parameters have been measured in several elementary aromatic azoles. Ring nitrogens ortho to the imino nitrogen e 2 qQ ≈4.2 MHz η ≈66%; meta position give ≈3.5 ≈12%.
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