期刊
JOURNAL OF MOLECULAR STRUCTURE
卷 1182, 期 -, 页码 308-316出版社
ELSEVIER
DOI: 10.1016/j.molstruc.2019.01.061
关键词
Bis(N-salicylidene aniline); Intramolecular H-bonding; Non-covalent interactions; X-ray; Structural analysis
资金
- Consejo Nacional de Ciencia y Tecnologia (CONACyT), Mexico city [158098]
Seven N,N'-bis(salicylidene)diamines of common formula (2-OH-(5X)C6H3C=N)(2)-Z [Z = CH2(m-C6H4), X = H (1a), X = CH3 (lb), X = CI (lc), X = Br (1d), X = NO2 (le), X = OH (1f) and (2-OH-(3OH) C6H3C= N)(2)-Z [Z = CH2(m-C6H4) (1g)] have been synthesized and characterized by IR, NMR and mass spectroscopy. Molecular structures of la-ld and lg were elucidated by X-ray diffraction, the structures are stabilized by two intramolecular O-H center dot center dot center dot N hydrogen bonds. Furthermore, intermolecular bonds as O-H center dot center dot center dot O, C-H center dot center dot center dot O, C-H center dot center dot center dot N and C-H center dot center dot center dot Hal stabilize the structures at supramolecular level. Compound lg showed in one side and intramolecular O-H center dot center dot center dot N hydrogen bond and, at the other side and N-H center dot center dot center dot O hydrogen bond, showing the presence of enol and keto tautomers at the same molecule, which could be attractive to use in sensors and no -lineal optics. Besides, compounds la-ld showed weak intermolecular 7-interactions. (C) 2019 Elsevier B.V. All rights reserved.
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