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Figure 3 The structures of the 1,4-di(2-ammonioethyl)piperazine cations of the C7H5O3− (standard atom colours, 1), the NO3− (green, Junk & Smith, 2005) and the H4B5O10− (red, Jiang, et al., 2009) salts, superimposed on each other to show the similar conformations adopted by the cations in all three structures. |