Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 8 (August 2004)

gd1327 scheme

Acta Cryst. (2004). C60, o569-o571 [doi:10.1107/S0108270104014763]

Non-mutagenic organic pigment intermediates. II. Isomorphous 2,2'-dichloro-5,5'-dipropoxybenzidine and 2,2'-dimethyl-5,5'-dipropoxybenzidine

A. El-Shafei, D. Hinks, P. D. Boyle and H. S. Freeman

Abstract: The title compounds, C₁₈H₂₂Cl₂N₂O₂ and C₂₀H₂₈N₂O₂, respectively, are isomorphous. The molecules lie at general positions in the unit cell. In each structure, chemically equivalent but crystallographically inequivalent amine N atoms exhibit different degrees of pyramidalization. The structures exhibit weak N-HN hydrogen bonding, which is influenced by the differences in hybridization around the amine N atoms. The torsion angles across the biphenyl linkage for the two compounds are 67.2 (2) and 68.3 (3)°.

Formula: C₁₈H₂₂Cl₂N₂O₂ and C₂₀H₂₈N₂O₂

Online 21 July 2004


	Structure factor file (CIF format) (234.8 kbytes) Contains datablock I

	Structure factor file (CIF format) (234.8 kbytes) Contains datablock II

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