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2-(4-chlorophenyl)-5-(4-nitrophenyl)-4,7-dihydropyrazolo[1,5-a]pyrimidine-3,6-dicarbaldehyde: a chain of rings built from N-H...O and C-H...O hydrogen bonds.

作者信息

Trilleras Jorge, Quiroga Jairo, Low John N, Cobo Justo, Glidewell Christopher

机构信息

Departamento de Química, Universidad de Valle, AA 25360 Cali, Colombia.

出版信息

Acta Crystallogr C. 2008 Jun;64(Pt 6):o341-3. doi: 10.1107/S0108270108014509. Epub 2008 May 21.

DOI:10.1107/S0108270108014509
PMID:18535344
Abstract

In the title compound, C20H13ClN4O4, the six-membered heterocyclic ring is planar and the molecular dimensions provide evidence for polarization of the molecular-electronic structure. Molecules are linked into a chain of rings by a combination of N-H...O and C-H...O hydrogen bonds, but the nitro group does not participate in the supramolecular aggregation. This study illustrates the marked influence of peripheral substituents on the pattern of hydrogen-bonded aggregation in compounds of this type.

摘要

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