CHARACTERIZATION OF SCHIFF BASES DERIVED FROM 3,4-DIMETHOXYBENZALDEHYDE: THE CRYSTAL STRUCTURE OF N,N'-BIS(3,4-DIMETHOXYBENZYLIDENE)-2,2-DIMETHYLPROPANE-1,3-DIAMINE HYDRATE
A. D. Khalaji1, A. Foroghnia2, K. Fejfarova3, M. Dusek3
1Golestan University, Gorgan, Iran
ad.khalaji@gu.ac.ir
2Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
3Institute of Physics, Czech Academy of Sciences, Prague 8, Czech Republic
Ключевые слова: diimine, Schiff base, spectroscopy, single crystal X-ray diffraction
Страницы: 728-732
Подраздел: КРИСТАЛЛОХИМИЯ
Аннотация
The Schiff base compounds N,N'-bis(3,4-dimethoxybenzylidene)-2,2-dimethylpropane-1,3-diamine hydrate, (3,4-MeO-ba)2Mepn.H2O (1), and N,N'-bis(3,4-dimethoxybenzylidene)butane-1,4-diamine, (3,4-MeO-ba)2bn (2), with different central groups derived from 3,4-dimethoxybenzaldehyde are synthesized and characterized by elemental analysis, FT—IR and 1H NMR spectroscopy. The crystal structure of 1 is determined by single crystal X-ray diffraction. Each imino functional group (—C=N—) is coplanar with its adjacent benzene ring and the two benzene rings form a dihedral angle of 86.868(27)°. Title compound 1 crystallizes in the monoclinic space group P21/n with unit cell parameters: a = 9.0774(2) Å, b = 29.2138(5) Å, c = 8.5696(2) Å, b = 92.4756(14)°, V = 2270.41(8) Å3 and Z = 4.
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