Hydro­gen bis­[l-lysinium(2+)] dichloride perchlorate

In the title compound, 2C₆H₁₅N₂O₂⁺·H⁺·ClO₄⁻·2Cl⁻, the two mono- and dicationic lysinium mol­ecules are held together by strong O—H⋯O hydrogen bonds. Both the perchlorate and chloride anions link mol­ecules 1 and 2 through the α-amino and ɛ-amino groups into infinite chains along the a axis. The aggregation of the hydro­philic groups is along the z = 0 plane and that of hydro­phobic is along the z = plane. Mol­ecule 1 is engaged in a zigzag (Z1) head-to-tail sequence.