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Poly[tris(dimethylformamide)(μ3-2,4,6-triiodol-1,3,5-benzene tricarboxylic acid)-praseodymium (III)] {Pr(TIBTC)(DMF)3}n (1) (H3TIBTC = 2,4,6-triiodo-1,3,5-benzene tricarboxylic acid) was synthesized by the reaction of Pr(NO3)3·6H2O and H3TIBTC at 85°C in a pyrex vial. 1 was characterized by elemental analysis, IR, UV–vis, TGA, PXRD, and atomic force microscopy analytical means. Each of the central Pr ions and the three carboxyl groups from the same ligand constitute a SBU, which is then joined by a carboxyl group to form a building block. In order to further explore the functional properties of 1, we used this compound for adsorption experiments. It is found that 1 can effectively adsorb anionic dyes in aqueous solutions. In particular, there is a good adsorption efficiency for coomassie brilliant blue R-250. Therefore, 1 shows good prospects for selective adsorption of anionic dyes from wastewater solution. [ABSTRACT FROM AUTHOR]

[Cu2(UO2)4(suc)4(pac)4] (1), [(Cu(H2O)2)(4,4′-bipy)2][(UO2)2(H2O)2(Hca)2]·3H2O (2), and [(Cu(H2O)2)(UO2)(bta)]·4H2O (3) were synthesized by the reaction of succinic acid and 3-pyridinecarboxylic acid, citric acid and 4,4′-bipyridine, or 1,2,4,5-benzenetetracarboxylic acid ligands with Cu(NO3)2·3H2O and UO2(CH3COO)2·2H2O. The complexes were characterized by IR and UV–vis spectroscopy, powder X-ray diffraction, single-crystal X-ray diffraction, and photoluminescence spectroscopy. Photocatalytic activities of the complexes were also investigated. [ABSTRACT FROM PUBLISHER]

Solvothermal reaction of uranyl acetate and succinic acid in DMF resulted in formation of three uranyl coordination polymers, [(UO2)4(μ2-OH)7(OH)6]·2(H2O)·(H3O)·4NH2(CH3)2(1), [(UO2)(μ2-OH)(OH)3]·2NH2(CH3)2] (2), and [(DMF)2(UO2)(μ2-OH)4(UO2))] (3). The products were characterized by elemental analysis, IR spectroscopy, X-ray single crystal, and powder diffraction. Structural analysis shows that1is a layer,2and3are 3-D network structures. [ABSTRACT FROM PUBLISHER]

Vanadium complexes (VO)2(2,2′-bipy)2(bta)(H2O)2(1) and (VO)2(1,10-phen)2(bta)(H2O)2(2) (H4bta = 1,2,4,5-benzenetetracarboxylic acid, 2,2′-bipy = 2,2-bipyridine and 1,10-phen = 1,10-phenanthroline) have been synthesized by the reaction of V2(SO4)3, H4bta, 2,2′-bipy (for1) and 1,10-phen (for2) by hydrothermal methods. The complexes were characterized by elemental analysis, IR, UV–vis, thermogravimetric analyses, and single-crystal X-ray diffraction. Structural analyses indicate that1and2are both VO-bta-N-heterocycle system complexes. The central vanadium is coordinated by N2O4donors to form a distorted octahedral geometry. The complexes exhibit catalytic bromination activity in a single-pot reaction with conversion of phenol red to bromophenol blue in a mixed solution of H2O-DMF at 30 ± 0.5 °C with pH 5.8, indicating that they can be considered as a functional model of vanadium-dependent haloperoxidases. The practical application of H2O2detection has also been studied. Two oxovanadium complexes, (VO)2(2,2′-bipy)2(bta)(H2O)2(1) and (VO)2(1,10-phen)2(bta)(H2O)2(2) (H4bta = 1,2,4,5-benzenetetracarboxylic acid, 2,2′-bipy = 2,2-bipyridine and 10-phen = 1,10-phenanthroline), have been synthesized and characterized. The catalytic bromination activity and the practical application of H2O2detection have been studied. [ABSTRACT FROM AUTHOR]

Three supramolecular complexes, [VO(phen)(C2O4)(H2O)]·CH3OH (1) [(VO)2(u2-C2O4)(C2O4)2(H2O)2]·L·H2O (2), and [(4,4′-bipyH2)0.5]+[VO2(2,6-dipic)]−·2H2O (3) (phen = 1,10-phenanthroline 4,4′-bipy = 4,4′-bipyridine, 2,6-dipic = 2,6-pyridinedicarboxylic, L = 1,4-bis((3,5-dimethyl-1H-pyrazol-1-yl)methyl)benzene), have been prepared and characterized by elemental analysis, IR, and UV–vis spectroscopy and single-crystal diffraction analysis. Structural analysis shows that the three complexes all contain carboxylate and V=O moiety; vanadium of1and2are six coordinate with distorted octahedral geometry with N2O4and O6donor sets, respectively, while3is five coordinate with distorted trigonal bipyramidal geometry with a NO4donor set. The complexes exhibit catalytic bromination activity in the single-pot reaction for the conversion of phenol red to bromophenol blue in H2O–DMF at 30 ± 0.5 C with pH 5.8, indicating that they can be considered as functional model vanadium-dependent haloperoxidases. In addition, electrochemical behaviors are also studied. [ABSTRACT FROM AUTHOR]

Complexes of melamine with adipic acid and Cu(CH3COO)2 · H2O, [Cu2(MA)(ad)2] · H2O (1), and (MA) · (H2ad) · H2O (2) (MA = melamine; H2ad = adipic acid) have been synthesized under hydrothermal conditions and characterized by elemental analysis, infrared, UV-Vis, and single crystal X-ray diffraction. Both crystallized in the triclinic space group P-1. In 1, MA and adipate bond to copper to construct a 3-D supramolecular framework in an unusual noninterpenetrated pseudo-primitive cubic topology constructed from a four-connected binuclear Cu(II) secondary building unit. A variety of intra- or inter-molecular hydrogen bonds exist. In 2, the 3-D supramolecular structure is formed through strong interactions among MA, adipic acid, and lattice water. Thermal analysis, photoluminescence, and calculations were also performed. [ABSTRACT FROM AUTHOR]

The reactions of stoichiometric amounts of Cu(CH3COO)2 · 2H2O or Ni(CH3COO)2 · 2H2O with KHL (potassium salt of salicylideneglycine) and 4,4'-bipy or 2,2'-bipy ethanol afforded [Cu2(L)2(μ-4,4'-bipy)(4,4'-bipy)2] · 2H2O (1) (L = salicylideneglycine) and Ni(OAc)2(2,2'-bipy) (H2O)2 (2), respectively. The structure of 1 contains two Cu(II)'s, bridged by 4,4'-bipy; each copper is square pyramidal. Complex 2 contains a Ni(II) in highly distorted octahedral geometry. The two complexes were constructed into 3-D interwoven networks by typical H-bonding (i.e., O-H ··· O and N-H ··· O) and some other intra- or intermolecular weak interactions (i.e., C-H ··· O). [ABSTRACT FROM AUTHOR]

Three new transition metal complexes, [FeII(H2O)6][(C9H7NO3)2FeII] · H2O (1), H[K(H2O)3][(C9H7NO3)2CoII] · H2O (2), and [CoII(H2O)6][(C9H7NO3)2CoII] · H2O (3), with salicylideneglycine have been synthesized and characterized by elemental analysis, IR spectra, UV-Vis spectroscopy, and X-ray crystallography. The structure analyses indicate that the tridentate salicylideneglycine binds through aliphatic nitrogen, phenoxy, and carboxylic oxygen in the anion. There are many inter- and intra-molecular hydrogen bonds among lattice water, the anion, and the cation to form a 3-D network. The thermogravimetric analyses and the quantum chemistry calculations of compounds 1, 2, and 3 are also discussed. [ABSTRACT FROM AUTHOR]

Reaction of a mixture of CuCl2, Ni(CH3COO)2 and NaH2B(pz)2 in methanol solution, resulted in the dihydrobis(pyrazolyl)borate complexes Cu(H2B(pz)2)2 and Ni(H2B(pz)2)2, respectively. Complexes 1 and 2 were characterized by IR, elemental analyses, thermal analyses and X-ray diffraction. The two complexes both crystallize in the space group Pbca, with crystal parameters for complex 1a = 14.443(3) Å, b = 6.2162(12) Å, c = 17.865(4) Å, α = β = γ = 90°, V = 1604.0(5) Å3, Z = 4; for complex 2a = 14.5264(4) Å, b = 6.3235(2) Å, c = 17.4720(4) Å, α = β = γ = 90°, V = 1604.94(8) Å3, Z = 4, respectively. X-ray structure analysis has shown that complexes 1 and 2 are both monomeric neutral complexes, and possess similar coordination modes around the metal centers. [ABSTRACT FROM AUTHOR]

V(IV)O(H 2 O) 2 (2,6-pyridinedicarboxylate)·2H 2 O ( 1 ) was obtained by the reaction of VO(acac) 2 with 2,6-pyridine dicarboxylic acid in MeOH and water. Complex ( 1 ) was characterized by IR spectroscopy, element analysis and X-ray diffraction. It crystallizes in space group P . X-ray structure analysis has shown that complex ( 1 ) is a monomeric neutral complex containing vanadyl ion, 2,6-pyridinedicarboxylate ligand and coordinated water, possessing distorted octahedral geometry. Complex ( 1 ) is constructed from mononuclear vanadium, V(IV)O(H 2 O) 2 (2,6-pyridinedicarboxylate) units and crystallization water molecules held together in an extensive two-dimensional network via O-H···O hydrogen bonds, π-π stacking interactions between parallel aromatic pyridines, and face-to-face stacking interactions between parallel carbonyl groups of 2,6-pyridine dicarboxylic acid ligands along the plane formed by the x , z axis of the unit cell. [ABSTRACT FROM AUTHOR]