title: Crystal structure and vibrational spectra of piperazinium bis(4-hydroxybenzenesulphonate) molecular-ionic crystal.
abstract: The piperazinium bis(4-hydroxybenzenesulphonate) crystallizes from water solution at room temperature in P2(1)/c space group of monoclinic system. The crystals are built up of doubly protonated piperazinium cations and ionized 4-hydroxybenzenesulphonate anions that interact through weak hydrogen bonds of O-H...O and N-H...O type. Mutual orientation of anions is determined by non-conventional hydrogen bonds of C-Hcdots, three dots, centeredpi type. Room temperature powder FT IR and FT Raman measurements were carried out. The vibrational spectra are in full agreement with the structure obtained from X-ray crystallography. The big single crystals of the title salt can be grown.
authors.affiliation: Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wrocław 2, P.O. Box 937, Poland. m.marchewka@int.pan.wroc.pl
authors.forename: M K
authors.initials: MK
authors.lastname: Marchewka
authors.forename: A
authors.initials: A
authors.lastname: Pietraszko
mesh_terms: D002244:Carbon / Q000737:chemistry; D003460:Crystallization; D018360:Crystallography, X-Ray / Q000379:methods*; D006859:Hydrogen / Q000737:chemistry; D006860:Hydrogen Bonding; D007477:Ions / Q000737:chemistry; D008958:Models, Molecular; D019800:Phenol / Q000737:chemistry; D000077489:Piperazine; D010879:Piperazines / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*; D014732:Vibration
chemical_list: D007477:Ions; D010879:Piperazines; C528383:piperazinium bis(4-hydroxybenzenesulphonate); D000077489:Piperazine; D019800:Phenol; D002244:Carbon; D006859:Hydrogen