Rods (1D assemblies) formed by alternate crown ether and arylenediamine molecules are the motif of the supramolecular architecture of crystals of molecular associates of 18 crown 6 with tetrafluoro 1,4 and 1,3 phenylenediamines, hexafluoro 2,6 and 2,7 naphthylenedi amines. Molecules in the assemblies are arranged via H bond predominantly between the crown ether oxygen atoms and the polyfluoroarene amino group hydrogen atoms. Influence of the amino groups mutual arrangement and the aromatic framework size on the crystal su pramolecular architecture is characterized. Specific melting heats of the crystalline 1D assem blies of para and pseudo para arylenediamines are higher than those of meta and pseudo meta analogs; the associates having higher melting heats selectively crystallize from solutions of isomeric phenylene or naphthylenediamine mixtures.
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