In the title compound (systematic name: 3,8-diamino-5-ethyl-6-phenylphenanthridin-5-ium 2,2,3,3,4,4,4-heptafluorobutyrate), C21H20N3 +·C4F7O2 -, two ethidium ions, C21H20N3 + form a dimerized structure due to π-π inter-actions, even though they are positive... ...
