Supramolecular architectures constructed through self-assembly of a chalcone and substituted diazo-β-diketones

Organic compounds namely pyridyl chalcone viz. 3-[4-(3-oxo-3-pyridin-2-yl-propenyl)-phenyl]-1-pyridin-2-yl-propenone (L1), p-cholorophenyldiazopentane-2,4-dione (L2) and p-methyl phenyldiazopentane-2,4-dione (L3) have been characterized by their single-crystal X-ray crystallographic studies. Several structural motifs resulting upon their self-association through probable non-covalent interactions have been discussed. The studies of related motifs found in Cambridge Structural Database are performed and the results are related to the structural data obtained for crystal structures reported here in.