Wen-Jing Liu

A new family of 3D heterometallic 3d–4f organodisulfonate complexes based on the linkages of 2D [Ln(nds)(H2O)]+ layers and [Cu(ina)2]− chains

Seven novel 3D heterometallic coordination compounds, LnCu(nds)(ina)2·H2O [Ln = Eu (1), Ce (2), Er (3), Gd (4), Sm (5), Tb(6), Dy(7); nds = 2,6-naphthanlenedisulfonate; ina = isonicotinic acid], have been synthesized under hydrothermal conditions and characterized by elemental analysis, infrared spectra, thermogravimetric analysis and single-crystal X-ray diffraction analysis. These compounds are isostructural and constructed by the linkages of 2D [Ln(nds)(H2O)]+ layers and Cu(ina)2− chains, which represent the first examples of 3D heterometallic coordination polymers created by the organodisulfonate ligands. Moreover, the complexes exhibit a novel (3,6)-connected net. The luminescence properties of complexes 1, 5 and 6 and the magnetic property of 4 were also investigated.

Construction of a porous Na–Cd mixed metal–organic framework based on biphenyl-4,4′-dicarboxylate and benzotriazole

A novel mixed metal–organic framework, 2H3O·[NaCd3(C14H8O4)3(C6H4N3)3]·5.5H2O, has been synthesized under solvothermal conditions and characterized by single-crystal X-ray structure determination, IR spectroscopy, elemental analysis, TGA, and powder X-ray diffraction. Crystal structure analysis shows that the complex is a 3D framework with hexagonal channels accommodating guest water molecules. Furthermore, the photoluminescence properties and nitrogen gas adsorption of this complex were investigated. The complex exhibits strong photoluminescence emission, and its open cavities possess nitrogen adsorptive ability.Graphical abstract

Interesting structures of self-assembled gadolinium coordination polymers with tuned stoichiometric ratios

Hydrothermal reactions of gadolinium(III) salts with 2,6-naphthalenedisulfonate (nds) and 1,10-phenanthroline with varying mole ratios led to five different compounds, {Gd(phen)(nds)(OH)} n (1), {[Gd2(phen)4(nds)3(H2O)2]·7H2O} n (2), {[Gd(phen)2(nds)0.5(OH)(H2O)]·0.5(nds)} n (3), {[Gd2(phen)4(nds)2(OH)2(H2O)2]·2H2O} n (4), and {[Gd(nds)(phen)(H2O)4]·0.5(nds)·(phen)·2H2O} n (5). In the case of 1, nds coordinates as η 2 μ 2–η 2 μ 2 bridging ligand to adjacent dimers, leading to a three-dimensional network. In 2, nds bridges with each SO3 − coordinated as a η 3 μ 1–bridging group, creating a two-dimensional polymer. For 3, 1-D infinite chains with dinuclear units connected by nds results in a 3-D framework based on hydrogen-bond interactions. 0-D 4 and 1-D 5 contain dinuclear clusters, which are further assembled into 3-D supramolecular networks via weak hydrogen bonds and aromatic packing interactions.

Tetra-aqua-(2-hy-droxy-acetato-κO,O)magnesium nitrate.

In the title complex, [Mg(C2H3O3)(H2O)4]NO3, the MgII cation is hexacoordinated by four O atoms from water molecules and two O atoms from a 2-hydroxyacetate ligand in a distorted octahedral coordination geometry. The structure exhibits a three-dimensional supramolecular network, which is stabilized by nine different O—H⋯O hydrogen bonds.

Tetra-μ-acetato-κ4 O:O′;κ3 O,O′:O′;κ3 O:O,O′-bis­[(acetato-κ2 O,O′)(1,10-phenanthroline-κ2 N,N′)europium(III)]

In the title centrosymmetric dinuclear EuIII complex, [Eu2(CH3COO)6(C12H8N2)2], each EuIII cation is coordinated by seven O atoms from five acetate anions and two N atoms from one phenanthroline ligand in a distorted tricapped trigonal-prismatic geometry. Four acetate anions bridge two EuIII cations to form the dinuclear complex, with an Eu⋯Eu distance of 3.9409 (8) Å. Weak intermolecular C—H⋯O hydrogen bonding is present in the crystal structure.

Tetra-μ-acetato-κO:O';κO,O':O';κO:O,O'-bis-[(acetato-κO,O')(1,10-phenanthroline-κN,N')europium(III)].

In the title centrosymmetric dinuclear EuIII complex, [Eu2(CH3COO)6(C12H8N2)2], each EuIII cation is coordinated by seven O atoms from five acetate anions and two N atoms from one phenanthroline ligand in a distorted tricapped trigonal-prismatic geometry. Four acetate anions bridge two EuIII cations to form the dinuclear complex, with an Eu⋯Eu distance of 3.9409 (8) Å. Weak intermolecular C—H⋯O hydrogen bonding is present in the crystal structure.

Tetra-μ-acetato-κ4O:O′;κ3O,O′:O′;κ3O:O,O′-bis­[(acetato-κ2O,O′)(1,10-phenanthroline-κ2N,N′)europium(III)]

In the title centrosymmetric dinuclear EuIII complex, [Eu2(CH3COO)6(C12H8N2)2], each EuIII cation is coordinated by seven O atoms from five acetate anions and two N atoms from one phenanthroline ligand in a distorted tricapped trigonal-prismatic geometry. Four acetate anions bridge two EuIII cations to form the dinuclear complex, with an Eu⋯Eu distance of 3.9409 (8) Å. Weak intermolecular C—H⋯O hydrogen bonding is present in the crystal structure.