Abstract

3,5-Dinitrobenzamide ( DNBA ) and 4,4′-bipyridyl ( BP ) co-crystallize to yield different types of channel structure from methanol and water, constituting supramolecular pseudopolymorphs. While, in the methanol adduct, DNBA and methanol molecules form a double helix network, in the water adduct, DNBA and water molecules yield a planar layer structure. However, in both the adducts, BP molecules sit in the channels created in the three-dimensional packing of the double helix or layers.

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