The structure of N-phenylpiperazinium trichloromercurate, (C10H15N2)[H
gCl3], consists of isolated bitetrahedral [Hg2Cl6](2-) units, di-mu-ch
loro-bis(dichloromercury), sharing one edge, with two short bonds of 2
.346(7) and 2.365(7) Angstrom, and two long bonds of 2.852(5) and 2.62
4(7) Angstrom. The organic cation, (C10H15N2)(+), is located between t
he [Hg2Cl6](2-) units. The phenylpiperazinium groups are connected to
the Hg2Cl6 dimer by hydrogen bonds to the Cl atoms.