title: Crystal structure of piperazine-1,4-diium bis-(4-amino-benzene-sulfonate).
abstract: The asymmetric unit of the title salt, C4H12N2 (2+)·2C6H6NO3S(-), consists of half a piperazindiium dication, located about an inversion centre, and a 4-amino-benzene-sulfonate anion. The piperazine ring adopts a chair conformation. In the crystal, the cations and anions are linked via N-H⋯O and C-H⋯O hydrogen bonds, forming a three-dimensional framework. Within the framework there are C-H⋯π inter-actions and the N-H⋯O hydrogen bonds result in the formation of R 4 (4)(22) and R 3 (4)(13) ring motifs.
authors: Department of Physics, SRM University, Ramapuram Campus, Chennai 600 089, India.
authors: K Sathesh
authors: KS
authors: Kumar
authors: Department of Physics, SRM University, Ramapuram Campus, Chennai 600 089, India.
authors: S
authors: S
authors: Ranjith
authors: Department of Physics, Alagappa University, Karaikudi 630 003, India.
authors: S
authors: S
authors: Sudhakar
authors: Department of Physics, University College of Engineering, Panruti, Cuddalore 607 106, India.
authors: P
authors: P
authors: Srinivasan
authors: Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.
authors: M N
authors: MN
authors: Ponnuswamy
keywords: 4-amino­benzene­sulfonate; crystal structure; hydrogen bonding; piperazine; three-dimensional framework