Mono­alkyl­ated 4′-aryl-substituted terpyridines

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1-Methyl-2-[4-phenyl-6-(pyridinium-2-yl)­pyridin-2-yl]­pyridinium diperchlorate, C22H19N32+·2ClO4, (I), and 2-[4-(methoxy­phenyl)-2,2′-bipyridin-6-yl]-1-methyl­pyridinium iodide, C23H20N3O+·I, (II), both crystallize in the monoclinic space group P21/c. In contrast with the monocharged mol­ecule of (II), the doubly charged mol­ecule of (I) contains an additional protonated pyridine ring. One of the two perchlorate counter-anions of (I) interacts with the cation of (I) via an N—H…O hydrogen bond. In (II), two mol­ecules related by a centre of symmetry are connected by weak – interactions, forming dimers in the crystal structure.

Document Type: Research Article


Publication date: June 1, 2004

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