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The synthesis of trinuclear open-chain prototypes gave variable yields: Ͼ 53% for dications 1·2X and 2·2X and Ͼ 80% for proton-ionizable dications 3·2X−5·2X incorporating 1H-1,2,4-triazole moieties. Deprotonation of the latter compounds resulted in the formation of the betaine counterparts 13·X−15·X. The courses of the dequaternization reactions of compounds 4·2X and 5·2X were also studied. The structural properties of dicationic protophanes 1·2X and 2·2X, containing bis(imidazolium) motifs, were examined by 1 H and

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