Acta Crystallographica Section C

Crystal Structure Communications

Volume 58, Part 9 (September 2002)

organic compounds

 

Ethyl 5-[2-(2-aminophénylimino)-2-phényléthylidène]-4-(4-chlorophényl)-4,5-dihydro-1,3,4-thiadiazole-2-carboxylate et éthyl 5-{2-[2-(méthylamino)phénylimino]-2-phényléthylidène}-4-(4-nitrophényl)-4,5-dihydro-1,3,4-thiadiazole-2-carboxylate

S. El Hazazi, A. Baouid, A. Hasnaoui et M. Pierrot

Abstract: Condensation of N-aryl-C-(ethoxycarbonyl)nitrilimines with 4-phenyl-1,2-dihydro-3H-1,5-benzodiazepine-2-thione lead to the title compounds, C₂₅H₂₁ClN₄O₂S, (IIIa), and C₂₆H₂₃N₅O₄S, (IIIb), respectively. Crystals of both compounds were obtained by evaporation of ethanol solutions at room temperature. In the structures of both compounds, a non-bonding interaction is observed between the S atom and the imino N atom. It is established that 1,3-dipolar cycloaddition occurs on the C=S double bond of the 1,5-benzodiazepine-2-thione.

Formula: C₂₅H₂₁ClN₄O₂S et C₂₆H₂₃N₅O₄S

	Structure factor file (CIF format) (208.1 kbytes) Contains datablock IIIa
	Structure factor file (CIF format) (227.4 kbytes) Contains datablock IIIb

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