Acta Cryst. (2005). C61, o276-o280 [ doi:10.1107/S0108270105007286 ]
Formula: C6H8N+·C8H4NO6-, C6H7ClN+·C8H4NO6-, C6H7BrN+·C8H4NO6- and C6H7IN+·C8H4NO6-
Online 2 April 2005
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