Easy Synthesis and Crystal Structure of a Novel Ortho Hydroxyl Schiff Base Compound CH2-{CYCLO-C6H10)-NCH-C6H4-OH-2}2


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A one-pot and neat reaction procedure is used for the synthesis of CH2-{cyclo-C6H10)-NCH-C6H4-OH-2}2. 1H NMR shows a mixture of ZE and EE isomers in a ratio of 2:0.9. The EE isomer is easily isolated as crystals suitable for the X-ray analysis. 1H,13C NMR and UV-visible spectra of the title compound are studied in different solvents. The crystal structure shows intramolecular H bonds as an EE isomer. The molecule lies about a twofold symmetry axis, passing through the C1 atom. The cyclo-hexyl ring C2-7 shows a chair conformation, with both C2-C1 and C5-N1 bonds in equatorial orientations. The phenolic hydrogen atom H1a forms a good hydrogen bond with the imino nitrogen atom N1 and the N1-C8 bond is short, as expected for a double bond (1.265(4) Å).

作者简介

M. Said

Chemistry Department

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Email: musa_said04@yahoo.co.uk
沙特阿拉伯, Al-Madinah Al-Munawarah

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