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Polysulfonic acids and their compounds have been scarcely investigated, despite the huge knowledge that we have of the respective polycarboxylic acids and polycarboxylates. This is because of the limited availability of polysulfonic acids, for which reliable synthetic protocols are often lacking. Here, we present the first compound of the recently reported disulfonic acid 1,4‐bis(4‐sulfophenyl)butadiyne...
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