Zhe An

Diaquabis[1-ethyl-6-fluoro-7-(4-methylpiperazin-4-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylato]cobalt(II) octahydrate

In the title compound, [Co(C17H19FN3O3)2(H2O)2]·8H2O, the CoII atom (site symmetry overline{1}) exhibits a distorted octaxadhedral geometry that is defined by two bidentate O,O-bonded 1-ethyl-6-fluoro-7-(4-methylxadpiperazin-4-yl)-4-oxo-1,4-dihydroxadquinoline-3-carboxylxadate (pef) monoanions and two water molxadecules. A network of O—H⋯O and O—H⋯N hydrogen bonds help to establish the crystal packing.

Aqua­bis[1-ethyl-6-fluoro-7-(4-methyl­piperazin-1-yl)-4-oxo-1,4-dihydro­quinoline-3-carboxyl­ato]zinc(II) dihydrate

The title compound, [Zn(C17H19FN3O3)2(H2O)]·2H2O or [Zn(pef)2(H2O)]·2H2O, where pef is 1-ethyl-6-fluoro-7-(4-methylpiperazin-4-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate, was synthesized under hydrothermal conditions. The ZnII atom exhibits a distorted ZnO5 square-pyramidal geometry defined by two bidentate O,O-bonded pef anions in the basal plane and one water molecule in the apical position. A network of O—H⋯O and O—H⋯N hydrogen bonds is formed between the ZnII complexes and the uncoordinated water molecules.

Diaquabis[1-ethyl-6-fluoro-7-(4-methylpiperazin-4-ium-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylato-κ2O3,O4]manganese(II) benzene-1,4-dicarboxylate tetradecahydrate

In the title compound, [Mn(C17H20FN3O3)2(H2O)2](C8H4O4).14H2O, the MnII atom (site symmetry overline{1}) exhibits a distorted MnO6 octaxadhedral geometry defined by two neutral bidentate O,O-bonded 1-ethyl-6-fluoro-7-(4-methylxadpiperazin-4-ium-1-yl)-4-oxo-1,4-dihydroxadquinoline-3-carboxylxadate (Hpef) zwitterions and two water molxadecules. The charge-balancing benzene-1,4-dicarboxylxadate (1,4-bdc) anion is also centrosymmetric. An extensive network of O—H⋯O and O—H⋯N hydrogen bonds helps to establish the crystal packing.

Poly[[bis­[μ2-8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydro­pyrido[2,3-d]pyrimidine-6-carboxyl­ato]zinc(II)] dihydrate]

The title compound, {[Co(C14H16N5O3)2]·2H2O}n or [Co(ppa)2]·2H2O}n, where ppa denotes the 8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydroxadpyrido[2,3-d]pyrimidine-6-carbxadoxxadylxadate anion, was synthesized under hydroxadthermal conditions. The CoII atom (site symmetry overline{1}) exhibits a distorted trans-CoN2O4 octaxadhedral geometry defined by two monodentate N-bonded and two bidentate O,O′-bonded ppa anions. The extended two-dimensional structure is a square grid, which is consolidated by N—H⋯O hydrogen bonds. The disordered uncoordinated water molxadecules occupy cavities within the grid.The title compound, {[Zn(C14H16N5O3)2]·2H2O}n or [Zn(ppa)2]·2H2O}n, where ppa = 8-ethyl-5,8-dihydro-5-oxo-2-(1-piperazinyl)-pyrido(2,3-d)-pyrimidine-6-carboxylate, was synthesized under hydrothermal conditions. The ZnII atom (site symmetry ) exhibits a distorted trans-ZnN2O4 octahedral geometry defined by two monodentate N-bonded and two bidentate O,O-bonded ppa monoanions. The extended two-dimensional structure arising from this connectivity is a square grid and the disordered uncoordinated water molecules occupy cavities within the grid. An N—H⋯O hydrogen bond occurs.

catena‐Poly[bis­[bis­(1H‐benzotriazole)zinc(II)]‐μ4‐benzene‐1,2,4,5‐tetra­carboxyl­ato], a one‐dimensional coordination polymer with double chains

In the title compound, [Zn2(C10H2O8)(C6H5N3)4]n, the ZnII atom has a distorted tetraxadhedral coordination geometry, defined by two N atoms and two carboxyl O atoms from two benzotriazole ligands and a benzene-1,2,4,5-tetraxadcarboxylxadate ligand. The structure exhibits one-dimensional double chains running along the [100] direction, which further extend into a three-dimensional supramolecular network by π–π stacking.

mer-Triaqua­(1,10-phenanthroline-κ2N,N′)(sulfato-κO)magnesium(II)

In the title compound, [Mg(SO4)(C12H8N2)(H2O)3], the MgII centre exhibits a slightly distorted octahedral coordination environment defined by two N atoms from a 1,10-phenanthroline molecule, one O atom from a sulfate dianion and three meridionally arranged O atoms from coordinated water molecules. The crystal structure involves intra- and intermolecular O—H⋯O hydrogen bonds.

Poly[[bis­[μ-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazin­yl)quinoline-3-carboxyl­ato-κ3O3,O4:N7]cobalt(II)] dihydrate]

In the title compound, {[Co(C16H17FN3O3)2]·2H2O}n, the Co atom exists in a distorted trans-CoN2O4 octaxadhedral geometry that is defined by two monodentate N-bonded and two bidentate O,O′-bonded 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinxadyl)-3-quinoline carboxylxadate ligands. The extended two-dimensional structure exhibits a 13.33 × 16.19u2005A square grid. The Co atom lies on a center of inversion.

Poly[[bis[μ-1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylato]nickel(II)] dihydrate]

In the title compound, {[Ni(C16H17FN3O3)2]·2H2O}n, the NiII atom (site symmetry overline{1}) exists in a distorted trans-NiN2O4 octaxadhedral geometry defined by two monodentate N-bonded and two bidentate O,O-bonded 1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroxadquinoline-3-carboxylxadate (norf) monoxadanions. The extended two-dimensional structure is a square grid. N—H⋯O hydrogen bonds are present in the crystal structure. The water O atom is disordered over two positions; the site occupancy factors are ca. 0.77 and 0.23.

Bis[1-ethyl-6-fluoro-7-(4-methyl­piperazin-1-yl)-4-oxo-1,4-dihydro­quinoline-3-carboxyl­ato-κ2O3,O4]­copper(II)

In the title compound, [Cu(C17H19FN3O3)2], the CuII atom (site symmetry ) exhibits a slightly distorted CuO4 square-planar geometry defined by two bidentate O,O′-bonded 1-ethyl-6-fluoro-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate (perfloxacinate) anions.

Poly[[bis­[μ-1-ethyl-6-fluoro-4-oxo-7-(1-piperazin­yl)-1,4-dihydro-1,8-naphthyridine-3-carboxyl­ato]cobalt(II)] dihydrate]

In the title compound, {[Co(C15H16FN4O3)2]·2H2O}n, the CoII atom (site symmetry overline{1}) exists in a distorted trans-CoN2O4 octaxadhedral geometry that is defined by two monodentate N-bonded and two bidentate O,O-bonded 1-ethyl-6-fluoro-4-oxo-7-(1-piperazine)-1,4-dihydro-1,8-naphthyridine-3-carbxadoxyxadlxadate (enox) monoanions. The extended two-dimensional structure is a square grid.