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Figure 1
Chemical diagrams for pyrazine-2,3,5,6-tetracarboxylic acid (pztca), 4,4′,4′′,4′′′-(pyrazine-2,3,5,6-tetrayl)tetrabenzoic acid (pztba), pyrazine-2,3-dicarboxylic acid (pzdca) and pyridine-2,6-dicarboxylic acid (pydca). |
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Figure 1
Chemical diagrams for pyrazine-2,3,5,6-tetracarboxylic acid (pztca), 4,4′,4′′,4′′′-(pyrazine-2,3,5,6-tetrayl)tetrabenzoic acid (pztba), pyrazine-2,3-dicarboxylic acid (pzdca) and pyridine-2,6-dicarboxylic acid (pydca). |