title: Piperazine-1,4-diium bis-(perchlorate) dihydrate.
abstract: The asymmetric unit of the title compound, C(4)H(12)N(2) (2+)·2ClO(4) (-)·2H(2)O, contains half of a piperazinediium cation, one perchlorate anion and one water mol-ecule. The diprotonated piperazine ring, which is completed by crystallographic inversion symmetry, adopts a chair conformation. In the crystal structure, the cations and anions are linked by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional network.
authors: Department of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, People's Republic of China.
authors: Cong-Hu
authors: CH
authors: Peng
references: J Am Chem Soc. 2006 Dec 13;128(49):15775-85
references: 17147387
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677