Syntheses and Structural Studies of Schiff Bases Involving Hydrogen Bonds

Molecules

Almudena Perona¹  Dionisia Sanz¹  Rosa M. Claramunt¹ 

[1] Departamento de Química Orgánica y Bio-Orgánica, Facultad de Ciencias, UNED, Senda del Rey 9, E-28040 Madrid, Spain; ^†

关键词: Schiff bases;    Tautomerism;    Hydrogen bonds;    NMR spectroscopy;    Density functional calculations;   

DOI  :  10.3390/11060453

来源: mdpi

【 摘 要 】

New Schiff bases have been prepared by reacting 3-hydroxy-4-pyridine-carboxaldehyde with various amines. NMR spectroscopic methods provided clear evidence that the Schiff bases exist in the solid state and in solution as hydroxyimino tautomers with the E-configuration. A study of the stabilities of the tautomeric forms and the different conformers has been carried out using density functional calculations at the B3LYP/6-31G** level.

【 授权许可】

Unknown   
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