Yu Sun, Ran Zhang, Qing Jin
Aug 15, 2006
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Influential Citations
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Journal
Acta crystallographica. Section C, Crystal structure communications
Abstract
The two title compounds, both with formula C 18 H 16 ClN 3 O, are structurally similar Schiff bases derived from the condensation of 4-chlorobenzaldehyde or 2-chlorobenzaldehyde with 4-aminoantipyrine in methanol solution. As expected, both compounds adopt trans configurations about the central C=N bonds. In the crystal structure of the 4-chloro analogue, molecules are linked through weak C-H···O hydrogen bonds, forming chains running along the a axis. In the crystal structure of the 2-chloro analogue, molecules are linked through weak C-H···O and C-H···Cl hydrogen bonds, forming layers parallel to the ab plane.