X-Ray crystal structure of a 1,4-dihydropyridine-crown ether–sodium perchlorate complex crystallized with a molecule of acetone

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Abstract
The crown ether–1,4-dihydropyridine (1) complexes with NaClO4 and forms crystals containing a molecule of acetone co-ordinated to Na+; an X-ray structural determination reveals the dihydropyridine ring to be in a pronounced boat conformation and tilted relative to the polyethyleneglycol chain.