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organic compounds
The cation of the title salt, C13H14N3+.NO3-, is found to have a conformation with both phenyl rings lying in syn positions with respect to the unsubstituted N atom. The geometry of the guanidinium group is close to that expected for a central Csp2 atom. The structure is stabilized by a two-dimensional network of hydrogen bonds in the (100) plane, where the O atoms of the anion are acceptors from the N-H guanidinium groups.