Yi-Hang Wen

Bis[μ-3-(2-hy­droxy­phen­yl)propenoato]bis­{aqua­(4,4′-bipyridine)­bis­[3-(2-hydroxy­phen­yl)propenoato]yttrium(III)} 4,4′-bipyridine disolvate

The title compound, [Y2(C9H7O3)6(C10H8N2)2(H2O)2]·2C10H8N2, contains two eight-coordinated YIII ions, which are linked by two carboxylate groups from two 2-hydroxycinnamate anions, leading to a centrosymmetric dinuclear structure surrounded by solvent 4,4′-bipyridine molecules. It forms a three-dimensional framework connected by extensive O—H⋯O and O—H⋯N hydrogen-bonding interactions.

Adamantane‐1‐ammonium 2‐nitro­benzoate

The title compound, C17H22N2O4, was obtained by the diffusion method. Strong N—H⋯O hydrogen bonds generate a chain-like structure.

2-[4-(Carb­oxy­meth­yl)phen­oxy]acetic acid

The title compound, C10H10O5, was obtained by the reaction of 4-hydroxyphenylacetic acid with chloroacetic acid. In the crystal, the molecules form a three-dimensional network by way of intermolecular O—H⋯O hydrogen bonding.

Bis(2-amino-3H-benzothia­zolium) bis­(7-oxabicyclo­[2.2.1]heptane-2,3-di­carbox­yl­ato)manganate(II) hexa­hydrate

In the crystal structure of the title salt, (C7H7N2S)2[Mn(C8H8O5)2]·6H2O, the heterocyclic N atom of the 2-aminobenzothiazole molecule is protonated. The MnII atom (site symmetry ) has a slightly distorted octahedral MnO6 coordination defined by the bridging O atoms of the bicycloheptane unit and four carboxylate O atoms of two symmetry-related and fully deprotonated ligands. The crystal packing is stabilized by N—H⋯O hydrogen bonds between the cations and anions and by O—H⋯O hydrogen bonds including the crystal water molecules.

Bis(μ-naphthalene-1,8-dicarboxyl­ato)bis­[aqua­(2,2′-bipyridine)zinc(II)] tetra­hydrate

The title complex, [Zn2(C12H6O4)2(C10H8N2)2(H2O)2]·4H2O, is a binuclear complex with two independent ZnII ions in a slightly disorted trigonal bipyramidal environment, coordinated by one aqua ligand, two naphthalene-1,8-dicarboxylate ligands and one 2,2′-bipyridine ligand. π–π Interactions [centroid–centroid distance of 3.8489u2005(5)u2005Å] and O—H⋯O hydrogen bonds connect the molecules, forming a three-dimensional structure.

Tetrakis[μ-3-(3-hy­droxy­phen­yl)propenoato]bis­{aqua­(2,2′-bipyridine)­[3-(3-hy­droxy­phen­yl)propenoato]neodymium(III)} 2,2′-bipyridine disolvate dihydrate

The dinuclear title compound, [Nd2(C9H7O3)6(C10H8N2)2]·2C10H8N2·2H2O, was synthesized under hydrothermal conditions. The centrosymmetric complex consists of two nine-coordinated Nd3+ cations, six 3-hydroxycinnamate anions and two chelating 2,2′-bipyridine molecules. The coordination geometry around the cations can be best described as distorted tricapped trigonal-prismatic. The carboxylate groups show different coordination and bridging modes. Two of them chelate to one Nd3+ cation, two bridge the two cations in a bis-monodentate fashion, and two chelate to one and bridge monodentately to the symmetry-related Nd3+ cation. The dinuclear molecule is surrounded by two 2,2′-bipyridine solvent and two water molecules. Extensive O—H⋯O and O—H⋯N hydrogen-bonding interactions between the components lead to the formation of a three-dimensional network.

Bis(μ-naphthalene-1,8-dicarboxyl-ato-κO:O)bis-[aqua-bis-(N,N'-dimethyl-formamide-κO)copper(II)].

In the centrosymmetric dinuclear title complex, [Cu2(C12H6O4)2(C3H7NO)4(H2O)2], the coordination environment of each Cu(II) atom displays a distorted CuO5 square-pyramidal geometry, which is formed by two carboxylate O atoms of two μ-1,8-nap ligands (1,8-nap is naphthalene-1,8-dicarboxylate), two O atoms of two DMF (DMF is N,N′-dimethylformamide) and one coordinated water molecule. The Cu—O distances involving the four O atoms in the square plane are in the range 1.9501u2005(11)–1.9677u2005(11)u2005Å, with the Cu atom lying nearly in the plane [deviation = 0.0726u2005(2)u2005Å]. The axial O atom occupies the peak position with a Cu—O distance of 2.885u2005(12)u2005Å, which is significantly longer than the rest of the Cu—O distances. Each 1,8-nap ligand acts as bridge, linking two CuII atoms into a dinuclear structure. Intermolecular O—H⋯O and C—H⋯O hydrogen-bonding interactions consolidate the structure.

catena-Poly[[[tetra­aqua­manganese(II)]-μ-4,4′-bipyridine] bis­(3-hydroxy­cinnamate) dihydrate]

The title compound, {[Mn(C10H8N2)(H2O)4](C9H7O3)2·2H2O}n, was obtained by the hydrothermal reaction of manganese chloride with mixed 3-hydroxylcinnamic acid (H2 L) and 4,4′-bipyridine (4,4′-bipy) ligands. The structure contains [Mn(C10H8N2)(H2O)4]2+ cations with the MnII atoms lying on a centres of inversion and bridged into a linear chain along the a axis by 4,4′-bipy ligands, surrounded by HL − anions and uncoordinated water molecules. Extensive O—H⋯O hydrogen-bonding and weak π–π interactions [centroid–centroid distance = 3.7572 u2005(3)u2005Å] between the constituents lead to the formation of a three-dimensional supramolecular network.

Poly[[tetraaqua­bis(μ3-1H-benzimidazole-5,6-dicarboxyl­ato)dicobalt(II)] trihydrate]

The title complex, {[Co2(C9H4N2O4)2(H2O)4]·3H2O}n, was synthesized hydrothermally. The unique CoII ion is coordinated in a distorted octahedral coordination environment by two water molecules and three symmetry-related 1H-benzimidazole-5,6-dicarboxylate (Hbidc) ligands. The Hbidc ligands coordinate via a bis-chelating and mono-chelating carboxylate group and by an imidazole group N atom, bridging the CoII ions and forming an extended two-dimensional structure in the ab plane. In the crystal structure, intermolecular N—H⋯O and O—H⋯O hydrogen bonds connect complex and solvent water molecules, forming a three-dimensional supermolecular network. One of the solvent water molecules lies on a twofold rotation axis.

Three New Metal–Organic Polymers Based on Flexible 3-(4-(Carboxymethoxy) Phenyl) Propanoic Acid: Crystal Structures, Luminescent and Magnetic Properties

Three new metal–organic coordination complexes, [Zn2L(bpp)2Cl2]n (1), [ZnL(bipy)]n (2), [NiL(bipy)(H2O)]n (3), have been synthesized through hydrothermal reactions of flexible 3-(4-(carboxymethoxy)phenyl) propanoic acid(H2L) with different pyridyl-containing 1,3-bis(4-pyridyl)propane(bpp) or 4,4′-bipyridine(bipy) ligand, and they are characterized by elemetal analysis and single-crystal X-ray diffraction techniques. Complex 1 has a 2-D layer supramolecular network composed of 1-D distorted trapezoidal chains via C–H···π stacking interactions. Complex 2 displays a 2-D lattice-shaped layer structure. Complex 3 has three kinds of O–H···O intermolecular hydrogen bonds, exhibiting a 3-D supramolecular framework. The luminescent properties of complex 1 and 2 have indicated the mixture characteristic of intraligand and ligand-to-ligand charge transition. The magnetic property of 3 has shown the ferromagnetic coupling between Ni2+ ions.