Synthesis and structure of 2-amino-4-methylpyridin-1-ium hydrogen squarate
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The title salt (systematic name: 2-amino-4-methyl-pyridin-1-ium 2-hy-droxy-3,4-dioxo-cyclo-but-1-en-1-olate), C6H9N2 +·C4HO4 -, was obtained by the proton-transfer reaction between 2-amino-4-methyl-pyridine and squaric acid in aqueous solution: protonation oc... ...
