Bis(N,N′-diphenylguanidinium) oxalate

Article abstract of DOI:10.1107/S010827019900493X

In the title compound, 2C₁₃H₁₄N₃⁺·C ₂O^2-₄, the anion is at an inversion centre. The cation has approximate C₂ symmetry, with the two phenyl rings oriented anti with respect to the unsubstituted N atom. Bond lengths and angles within the guanidinium moiety are close to those expected for a central Csp² atom with a small charge delocalization between the three C-N bonds. The anions and cations are interconnected by a two-dimensional hydrogen-bonding network extended in the (100) plane.