Synthesis, crystal structure and magnetic properties of a one-dimensional Mn complex constructed from (+)-dibenzoyltartaric acid and 2,2'-bipyridine.

The self-assembly reaction of (+)-dibenzoyltartaric acid (D-HDBTA) with 2,2'-bipyridine (bpy) and Mn(CHCO)·4HO yielded a new coordination polymer, namely, catena-poly[[[diaqua(2,2'-bipyridine-κN,N')manganese(II)]-μ-2,3-bis(benzoyloxy)butanedioato-κO:O] dihydrate], {[Mn(CHO)(CHN)(HO)]·2HO} or {[Mn(DBTA)(bpy)(HO)]·2HO}, (I). Complex (I) has been characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA) and single-crystal and powder X-ray diffraction. It crystallizes in the orthorhombic space group P222.

Synthesis, structure and magnetocaloric properties of a new two-dimensional gadolinium(III) coordination polymer based on azobenzene-2,2',3,3'-tetracarboxylic acid.

A new Gd coordination polymer (CP), namely, poly[diaqua[μ-1'-carboxy-3,3'-(diazene-1,2-diyl)dibenzene-1,2,2'-tricarboxylato]gadolinium(III)], [Gd(CHNO)(HO)], (I), has been synthesized hydrothermally from Gd(NO)·6HO and azobenzene-2,2',3,3'-tetracarboxylic acid (Habtc). The target solid has been characterized by single-crystal and powder X-ray diffraction, elemental analysis, IR spectroscopy and susceptibility measurements. CP (I) crystallizes in the monoclinic space group C2/c.

An ultra-sensitive selective fluorescent sensor based on a 3D zinc-tetracarboxylic framework for the detection and enrichment of trace Cu in aqueous media.

Herein, a novel and fluorescent zinc-organic framework sensor [Zn(μ-Hbptc)(μ-4,4'-bpy)(HO)]·2nHO (1) (Hbptc = 2,3,3',4'-biphenyl tetracarboxylic acid, 4,4'-bpy = 4,4'-bipyridine) is synthesized and characterized, demonstrating its excellent fluorescence performance for Cu detection and the enrichment of Cu in aqueous media. The fluorescence intensity of 1 can be selectively quenched by Cu in a linear range of Cu concentrations of 0-0.7 μM.

Three chiral one-dimensional lanthanide-ditoluoyl-tartrate bifunctional polymers exhibiting luminescence and magnetic behaviors.

Since Ln-CPs have excellent optical properties (higher color purity, longer fluorescence lifetime and higher quantum yield) and magnetic properties, it is of great significance to prepare dual magneto-optical materials based on Ln(iii). Herein, we obtained three versatile Ln-CPs, [Ln(HDTTA)(CHOH)] , derived from reactions of lanthanide salts (Ln = Tb 1, Dy 2, Ho 3) and a chiral and flexible ligand, namely, (+)-di--toluoyl-d-tartaric acid (d-HDTTA) in a methanol-water solution, at room temperature and pressure. The structures of these compounds have been characterized by single crystal and powder X-ray diffraction, infrared spectroscopy, elemental analyses and thermogravimetric analyses.

Luminescent and magnetic bifunctional coordination complex based on a chiral tartaric acid derivative and europium.

A new mononuclear europium complex incorporating the (+)-di-p-toluoyl-D-tartaric acid (D-HDTTA) ligand, namely, catena-poly[tris{μ-3-carboxy-2,3-bis[(4-methylphenyl)carbonyloxy]propanoato}tris(methanol)europium(III)], [Eu(CHO)(CHOH)], (I), has been synthesized and characterized by IR spectroscopy, elemental analysis, powder X-ray diffraction and single-crystal X-ray diffraction analysis. The structure analysis indicates that complex (I) crystallizes in the trigonal space group R3 and exhibits an infinite one-dimensional chain structure, in which the Eu ion is surrounded by six O atoms from six D-HDTTA ligands and three O atoms from three coordinated methanol molecules, thus forming a tricapped trigonal prism geometry. The D-HDTTA ligand is partially deprotonated and adopts a μ-coordination mode via two carboxylate groups to link adjacent Eu ions, affording an infinite one-dimensional propeller-shaped coordination polymer chain along the c axis, with an Eu.

Inhibition of MSK1 Promotes Inflammation and Apoptosis and Inhibits Functional Recovery After Spinal Cord Injury.

Mitogen- and stress-activated kinase (MSK) 1 is a nuclear serine/threonine kinase. In the central nervous system, it plays an important role in regulating cell proliferation and neuronal survival; it is also involved in astrocyte inflammation and the inhibition of inflammatory cytokine production. However, its specific role in spinal cord injury is not clear.

A two-dimensional mixed-valence Cu(II)/Cu(I) coordination polymer constructed from 2-(pyridin-3-yl)-1H-imidazole-4,5-dicarboxylate.

Coordination polymers are a thriving class of functional solid-state materials and there have been noticeable efforts and progress toward designing periodic functional structures with desired geometrical attributes and chemical properties for targeted applications. Self-assembly of metal ions and organic ligands is one of the most efficient and widely utilized methods for the construction of CPs under hydro(solvo)thermal conditions. 2-(Pyridin-3-yl)-1H-imidazole-4,5-dicarboxylate (HPIDC(2-)) has been proven to be an excellent multidentate ligand due to its multiple deprotonation and coordination modes.

A new family of 1D, 2D and 3D frameworks aggregated from Ni5, Ni4 and Ni7 building units: synthesis, structure, and magnetism.

Three new Ni(ii)-clusters based on a Y-shaped ligand (biphenyl-3,4',5-tricarboxylate, H3BPT), [Ni5(HBPT)4(OH)2(H2O)12]n (), [Ni4(BPT)2(OH)2(H2O)6]n·4nH2O (), and [Ni7(BPT)2(1,4-bib)2(OH)6(HCO2)2]n·3nH2O () (1,4-bib = 1,4-bi(1H-imidazol-1-yl)benzene), have been synthesized under solvothermal conditions. They were studied by infrared spectroscopy (IR), single crystal X-ray diffraction, thermogravimetric analysis (TGA), and magnetochemistry. The complexes contain low nuclear Ni-clusters as building units (BUs).

Structure, photochemistry and magnetic properties of tetrahydrogenated Schiff base chromium(III) complexes.

Four mononuclear chromium(III) complexes [Cr(L(1))(en)]Br0.3Cl0.7 (1), [Cr(L(1))(pr)]Cl (2), [Cr(L(2))(en)]ClO4 (3), [Cr(L(2))(pr)]Cl (4) along with one dinuclear μ-methoxo [Cr(μ-OMe)(L1)]2 (5) were synthesized (en=1,2-ethanediamine, pr=1,3-diaminopropane H2L(1)=Tetrahydrosalen=H2[H4]salen=N,N'-bis(2-hydroxybenzyl)-1,2-ethanediamine, H2L(2)=Tetrahydrosalpr=H2[H4]salpr=N,N'-bis(2-hydroxybenzyl)-1,3-diaminopropane).

2-[(E)-(4-Bromo-phenyl)imino-methyl]-4-chloro-phenol.

In the title compound, C13H9BrClNO, the dihedral angle between the substituted benzene rings is 44.25 (11)°. There are strong intra-molecular O-H⋯N hydrogen bonds, which generate S(6) rings, and also inter-molecular Cl⋯Cl [3.

Bis(2,4,6-triamino-1,3,5-triazin-1-ium) hydrogen phosphate trihydrate.

In the title hydrated mol-ecular salt, 2C(3)H(7)N(6) (+)·HPO(4) (2-)·3H(2)O, three of the O atoms of the hydrogen phosphate anion are disordered over two positions, with relative occupancies of 0.763 (1) and 0.237 (1).

trans-Dichlorotetrabenzimidazolecadmium(II) tetrabenzimidazole: a three-dimensional supramolecular structure built from C-H...pi, N-H...Cl and N-H...N hydrogen bonds.

The title compound, [CdCl2(C7H6N2)4].4C7H6N2, consists of a Cd(Bzim)4Cl2 complex (Bzim is benzimidazole) lying on a fourfold rotation axis in the space group P4nc, and four benzimidazole molecules which are linked to the coordinated benzimidazole unit by N-H..

cis-Dichloro[tris(2-benzimidazolylmethyl)amine]iron(III) chloride ethanol dihydrate: hydrogen bonding changing the arrangement of tapes built from pi-pi and C-H...pi interactions.

The title compound, [FeCl2(C24H21N7)]Cl.C2H5OH.2H2O, comprises an [FeCl2(C24H21N7)]+ cation, a Cl- anion, an ethanol molecule and two water molecules.

Bis(mu-1,10-phenanthrolin-2-olato-kappa3N,N':O)dicopper(I)(Cu-Cu) monohydrate.

The crystal structure of the title compound, [Cu(2)(C(12)H(7)N(2)O)(2)].H(2)O, shows that this dinuclear complex has shorter Cu-N, Cu-O and Cu-Cu distances within the coordination sphere than similar reported complexes. The complex molecule is located on a centre of symmetry and the water molecule is on a twofold axis of the space group C2/c.