Miao-Ling Huang

catena-Poly[[(2,2′-bipyridine)copper(II)]-μ-5-tert-butyl­isophthalato]

In the crystal structure of the title polymeric compound, [Cu(C12H12O4)(C10H8N2)]n, the asymmetric unit consists of one CuII ion, one 5-tert-butylisophthalate (tbip) and one 2,2′-bipyridine (bpy) ligand. The copper(II) ion is four-coordinated by two N atoms from bipy and two O atoms from two tbip ligands, leading to a distorted tetrahedral coordination. Each tbip ligand adopts a bis-monodentate coordination mode to connect two symmetry-related copper(II) ions, so forming a zigzag polymer chain parallel to [001]. The tert-butyl methyl groups are disordered over two positions with occupancies of 0.506 (6)/0.494 (6)

A dinuclear copper complex: bis­(μ-4-amino­benzoato)bis­[aqua(1,10-phenanthroline)copper(II)] dichloride bis(4-amino­benzoic acid) dihydrate

The title complex, [Cu2(C7H6NO2)2(C12H8N2)2(H2O)2]·2C7H7NO2·2H2O, consists of a dinuclear [Cu2(C7H6NO2)2(C12H8N2)2(H2O)2]2+ cation, two Cl− anions, two 4-aminobenzoic acid molecules and two disordered water molecules (site occupancy factors 0.5). The Cu(II) ion adopts a distorted square-pyramidal geometry formed by two N atoms from the 1,10-phenanthroline ligand and two O atoms of the two 4-aminobenzoic acid ligands and one water O atom. The Cu⋯Cu separation is 3.109 (2) Å. A twofold axis passes through the mid-point of the Cu⋯Cu vector.

Aqua-{N-[(4-methyl-phen-yl)sulfon-yl]glycinato(2-)-κN,O}(1,10-phenan-throline)copper(II).

In the title complex, [Cu(C9H9NO4S)(C12H8N2)(H2O)], the CuII ion is coordinated in a distorted square-pyramidal geometry by the two N atoms from a 1,10-phenanthroline ligand, one N atom from the deprotonated amino group of an N-tosylglycinate ligand, one O atom from the carboxylate part of the N-tosylglycinate ligand and a water O atom. Intermolecular O—H⋯O hydrogen bonds involving the water H atoms link neighboring molecules into supramolecular chains along [010]. Weak π–π stacking interactions [centroid–centroid distances of 3.456 (1) and 3.691 (1) Å] between the benzene rings of 1,10-phenanthroline ligands of adjacent molecules extend the chains into a layer structure parallel to (001).

Bis(4-aminobenzenesulfonato)tri­aqua­bis(1,10-phenanthroline)neodymium(III) nitrate tetrahydrate

The title complex, [Nd(C6H6NO3S)2(C12H8N2)2(H2O)3]NO3·4H2O, comprises a mononuclear cation, an NO3 − anion and two uncoordinated water molecules; the NdIII cation, one coordinated water molecule, and the NO3 − anion each lie on a twofold axis of symmetry. The NdIII ion exhibits an NdN4O5 coordination environment comprising two O atoms of two monodentate 4-aminobenzenesulfonato ligands, four N atoms of the bidentate 1,10-phenanthroline ligands, and three water-O atoms. The coordination geometry is based on a tricapped triangular-prismatic arrangement. The components are consolidated into a three-dimensional network via O—H⋯O, O—H⋯N and N—H⋯O hydrogen-bonding interactions

4-(4-Methylbenzenesulfonamido)benzoic acid N,N-dimethyl-formamide mono-solvate.

In the title compound, C14H13NO4S·C3H7NO, the C—S—N—C torsion angle of −64.55 (17)° defines the folded conformation of the molecule. The dihedral angle between the benzene rings is 83.367 (6)°. In a crystal, molecules are linked into a chain along a axis through intermolecular N—H⋯O and O—H⋯O hydrogen bonds. There is also an intramolecular C—H⋯π interaction.

4,4'-Bipyridine-4-(p-toluene-sulfonamido)-benzoic acid (1/2).

In the title compound, C14H13NO4S·0.5C10H8N2, the two benzene rings are nearly perpendicular to each other [dihedral angle = 83.21 (10)°]. The bipyridine molecule is centrosymmetric, the mid-point of the C—C bond linking the pyridine rings being located on an inversion center. Intermolecular N—H⋯O and O—H⋯N hydrogen bonds and weak intermolecular C—H⋯O hydrogen bonds are present in the crystal structure.

Bis(4-amino-benzoato)-κO,O';κO-(2,2'-bipyridine-κN,N')zinc.

In the title complex, [Zn(C7H6NO2)2(C10H8N2)], the ZnII cation is coordinated by two aminobenzoate anions and one 2,2′-bipyridine ligand in a distorted trigonal–bipyramidal geometry. The carboxylate group of one aminobenzoate anion coordinates to the ZnII cation in a monodentate manner, whereas the carboxylate group of the other aminobenzoate anion chelates the Zn cation with different Zn—O bond lengths. Intermolecular N—H⋯N and N—H⋯O hydrogen bonding is present in the crystal structure.

{4,4'-Dibromo-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}copper(II).

In the title compound, [Cu(C16H12Br2N2O2)], the CuII atom is coordinated in a slightly distorted square-planar geometry by two O and two N atoms of the tetradentate dianionic 4,4′-dibromo-2,2′-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolate Schiff base ligand.

Bis{μ-1,3-bis­[2-(5-bromo-2-oxidobenzyl­idene­amino)ethyl]-2-(5-bromo-2-oxido­phenyl)-1,3-imidazolidine}dineo­dymium(III) N,N-dimethyl­formamide hexa­solvate

In the title centrosymmetric dinuclear complex, [Nd2(C27H24Br3N4O3)2]·6C3H7NO, the NdIII ion is coordinated in a slightly distorted square-antiprismatic geometry by four N atoms and four O atoms from two centrosymmetrically-related 1,3-bis[2-(5-bromo-2-oxidobenzylamino)ethyl]-2-(5-bromo-2-oxidophenyl)-1,3-imidazolidine ligands. The Nd⋯Nd separation is 4.5012 (12) Å.

catena-Poly[{di-μ-isonicotinato-bis[di­aqua­isonicotinatoeuropium(III)]}-μ-isonicotinato-[diisonicotinatocopper(II)]-μ-isonicotinato]

The title compound, [CuEu2(C6H4NO2)8(H2O)4]n, displays a one-dimensional chain structure. The four-coordinate CuII ion (site symmetry ) adopts a trans-CuN2O2 geometry and is bridged by two carboxylate groups from two isonicotinate ligands. The EuIII ion adopts a distorted square-antiprismatic geometry, being coordinated by four O atoms from bridging carboxylate groups of four isonicotinate ligands, two O atoms from chelating carboxylate groups of one isonicotinate ligand and two O atoms from coordinated water molecules; adjacent EuIII ions in the chain are related by inversion. The water molecules interact with the ligands via O—H⋯N hydrogen bonds [O⋯O = 2.782 (3)–2.881 (3) Å], which link the chains into a three-dimensional structure.