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https://www.selleckchem.com/products/Teniposide(Vumon).html of the ring MnIII ions.Three salts containing the 4-(4-fluoro-phen-yl)piperazin-1-ium cation have been prepared and structurally characterized. In 4-(4-fluoro-phen-yl)piperazin-1-ium 2-hy-droxy-3,5-di-nitro-benzoate, C10H14FN2 +·C7H3N2O7 -, (I), the anion contains an intra-molecular O-H⋯O hydrogen bond, and it has a structure similar to that of the picrate ion. The cations and anions are linked into [001] chains of rings by a combination of two three-centre N-H⋯(O)2 hydrogen bonds. The anion in 4-(4-fluoro-phen-yl)piperazin-1-ium hydrogen oxalate, C10H14FN2 +·C2HO4 -, (II), is planar, and the cations and anions are linked into (100) sheets by multiple hydrogen bonds including two-centre N-H⋯O, three-centre N-H⋯(O)2, O-H⋯O, C-H⋯O and C-H⋯π(arene) types. In 4-(4-fluoro-phen-yl)piperazin-1-ium hydrogen (2R,3R)-tartrate monohydrate, C10H14FN2 +·C4H5O6 -·H2O, (III), the anion exhibits an approximate non-crystallographic twofold rotation symmetry with anti-periplanar carboxyl groups. A combination of eight hydrogen bonds, encompassing two- and three-centre N-H⋯O systems, O-H⋯O and C-H⋯π(arene) types, link the independent components into a three-dimensional framework. Comparisons are made with some related structures.The CoII atom in the title complex, [Co(SO4)(C12H8N2)(H2O)3] (or C12H14CoN2O7S), is octa-hedrally coordinated within a cis-N2O4 donor set defined by the chelating N-donors of the 1,10-phenanthroline ligand, sulfate-O and three aqua-O atoms, the latter occupying an octa-hedral face. In the crystal, supra-molecular layers lying parallel to (110) are sustained by aqua-O-H⋯O(sulfate) hydrogen bonding. The layers stack along the c-axis direction with the closest directional inter-action between them being a weak phenanthroline-C-H⋯O(sulfate) contact. There are four significant types of contact contributing to the calculated Hirshfeld surface at 44.5%, the major contribution comes from O-H⋯O contacts follow

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