Abstract
In the title compound, C(10)H(16)N(2)(2+)center dot 2HSO(4)(-), the S atoms adopt slightly distorted tetrahedral geometry and the diprotonated piperazine ring adopts a chair conformation. In the crystal, the 1-phenylpiperazine-1,4-diium cations are anchored between chains formed by the sulfate entities via intermolecular bifurcated N-H center dot center dot center dot(O,O) and weak C-H center dot center dot center dot O hydrogen bonds. These hydrogen bonds contribute to the cohesion and stability of the network of the crystal structure.