共查询到20条相似文献,搜索用时 15 毫秒
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Feilong Hu Xianhong Yin Yan Mi Wanshu Li Xinping Tang Zhen Ma 《Inorganic chemistry communications》2010,13(6):720-723
A new copper (II) complex with formula [Cu2(4,4′-bpy)5(H2O)4](ClO4)4(4,4′-bpy)(DMF)2(H2O)2 has been synthesized by reaction of 4,4′-bpyridine (4,4′-bpy) with Cu(ClO4)2. While strong hydrogen bonds play central roles in the formation of the 3D structure, the combined influence of the weak interactions such as C–H?O bonds, anion?π and C–H?π interactions are also evident in the structure. The preliminary investigation on the thermal property of the complex is presented. 相似文献
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A new paradodecatungstate-B compound decorated by transition metal copper, Na2Cu5(H2O)24(OH)2[H2W12O42]·10H2O (1), has been synthesized by convenient aqueous solution method and structurally characterized by single-crystal X-ray diffraction, IR spectrum, elemental analysis and TGA. The compound crystallizes in the triclinic P-1 space group with a = 10.7140(8) Å, b = 12.9476(9) Å, c = 13.6696(10) Å, α = 73.56°, β = 75.73°, γ = 67.69°, V = 1661.8(2) Å3 and Z = 1. In compound 1, polyanion of [H2W12O42]10 − acts as a dodecadentate ligand that links copper and sodium cations, forming a remarkable three-dimensional framework. The experiment of antitumor activities in vitro shows that the title compound exhibits remarkable inhibitory actions on human cervical carcinoma HeLa cells, ovarian carcinoma SKOV-3 cells, hepatoma HepG2 cells and neuroblastoma SHY5Y cells. 相似文献
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A novel organic-inorganic hybrid polyoxometalate-based 3D framework K5H4{Ce3(H2O)9[As2W21O72(mal)2]}·20H2O (1) (mal = malic acid) has been synthesized by the metastable precursor [As2W19O67(H2O)]14 −, which was further characterized by IR spectrum, thermogravimetric analysis (TGA), and X-ray single-crystal diffraction. Structural analysis revealed that 1 consists of the organo-functionalized [As2W21O72(mal)2]18 − units linked together by the Ce3 + ions resulting in 3D network-like architecture. Magnetic property studies indicate that obvious antiferromagnetic interactions exist in three Ce3 + ions. 相似文献
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Qing-Xiang Li Qiao Li Rong Chen Xiang-Liang Yang Jing-Yan Zhou Hui-Bi Xu 《Inorganic chemistry communications》2010,13(11):1293-1295
A novel tetranuclear copper(II) complex Na2[Cu4Na2(TACNTA)4(H2O)6]·(H2O)26, where TACNTA is 1,4,7-triazacyclononane-1,4,7-triacetate, was synthesized and characterized by X-ray crystallography. The result shows that each copper(II) ion is six-coordinated to three nitrogen atoms and three oxygen atoms of ligand TACNTA and adopts distorted octahedral coordination geometry. The superoxide (·O2?) dismutation activity of the complex was also investigated by the riboflavin–methionine–nitro blue tetrazolium assay. 相似文献
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Feilong Hu Xianhong Yin Yan Mi Shanshan Zhang Weiqiang Luo Yue Zhuang 《Inorganic chemistry communications》2009,12(12):1189-1192
Two novel copper(II) complexes, namely [Cu(phen)(L)2]·6H2O (1) and [Cu(phen)3]·(ClO4)2 (2) have been synthesized under mild condition (HL = 5-methyl-1H-pyrazole-3-carboxylic acid, phen = 1,10-phenanthroline). We report the structural evidence of discrete water decamer conformation in the solid state. These units are found to act as supramolecular glue in the aggregation of mononuclear copper(II) complex to give a three-dimensional network through hydrogen-bonding. The preliminary investigation on the thermal behavior and the anion exchange property of the complexes are presented. 相似文献
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《Inorganic chemistry communications》2002,5(2):143-146
Hydrothermal reaction between cobalt(II) nitrate and 2,2′-bipyridine-5,5′-dicarboxylic acid in the presence of NaOAc gave a two-dimensional coordination-polymer of cobalt(II), [Co(2,2′-bipyridine-5,5′-dicarboxylato)(H2O)]·(H2O) (1). X-ray structure determination showed that compound 1 has a two-dimensional infinite network based on cobalt-bipyridinedicarboxylate building blocks and has a relatively small channel of 5.0×6.6 Å. 相似文献
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《Inorganic chemistry communications》2003,6(9):1272-1274
The hydrothermal reaction of Na2WO4 · 2H2O, ZnCl2, Zn(Ac)2 · 2H2O, 2,2′-bipyridine, and H2O gives rise to a novel Keggin unit supported zinc-bipyridyl complex [Zn(2,2′-bipy)3]2[ZnW12O40Zn(2,2′-bipy)2] · H2O consisting of a novel heteropolyanion [ZnW12O40Zn(2,2′-bipy)2]4+ in which the Keggin anion [ZnW12O40]6− acts as a bidentate ligand towards the transition metal cation Zn2+ through a terminal oxygen and a bridging oxygen from the same WO6 octahedron. 相似文献
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A novel 2D compound based on Wells–Dawson polyoxometalates, [Cu3(bbi)6(P2W18O62)] (bbi = 1,1′-(1,4-butanediyl)bis(imidazole)) (1) has been hydrothermally synthesized and characterized by elemental analyse, IR, TG, PXRD and single crystal X-ray diffraction. In compound 1, each Cu2+ ion is connected with four adjacent Cu2+ ions by bbi ligands along four different directions and each bbi ligand is two-coordinated by two Cu2+ ions, which results in an unusual 2D interlink lock-liked layer. Interestingly, two kinds of macrocycles exist in the structure, in which six smaller 33-membered rings are placed end to end to form the larger ones (66-membered macrocycles). The [P2W18O62]6− polyoxoanions as bidentate ‘guest’ is incorporated into the larger macrocycles. These 2D layers are further packed into 3D framework through strong supramolecular interactions. Additionally, electrochemical and electrocatalysis behavior of 1-CPE have been studied in detail. 相似文献
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Lenka Klištincová Erik Rakovský Peter Schwendt Gustav Plesch R. Gyepes 《Inorganic chemistry communications》2010,13(11):1275-1277
The decavanadate with a novel glycine–glycinato complex of copper (II) in the cationic part, (NH4)2[Cu2(H2O)4(NH3CH2COO)2(NH2CH2COO)2]H2V10O28·6H2O (1), has been prepared and characterized by elemental analysis, infrared and EPR spectroscopies. The triplet X band EPR spectrum of powdered sample evidenced magnetic interaction between the Cu(II) atoms in the dimeric unit which is probably realized through the bridging water molecules in this part of the complex. A single crystal X-ray diffraction study revealed that the structure of 1 contains cationic copper complex with a rare Cu(H2O)2Cu double bridge. In this cation, a simultaneous bidentate N, O– and monodentate O– coordination of glycine to the same central atom was observed for the first time. 相似文献
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《Inorganic chemistry communications》2003,6(7):908-911
A novel zinc complex, [Zn2(H2O)3 (2,2′-bipy)2(btc)][Zn(H2O)(2, 2′-bipy)(btc)]·8H2O (1), (H3btc=1,3,5- benzenetricarboxylic acid, 2,2′-bipy=2,2′-bipyridine) has been prepared by hydrothermal reaction of H3btc, Zn(CH3CO2)2·2H2O and 2,2′-bipyridine at 180 °C and characterized by single-crystal X-ray diffraction analysis. Complex 1 consists of independently cationic and anionic chains. The hydrogen bonding interactions between chains extend 1 into a two-dimensional supramolecular architecture. 相似文献
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The title polyoxometalate (POM) 1 was obtained by a 1:2 molar-ratio reaction of tri-lacunary Dawson POM [B-α-P2W15O56]12? with Hf(SO4)2 or HfCl4 in an aqueous solution, and isolated as dimethylammonium salt (Me2NH2-1) and, also, as sodium salt (Na-1). These compounds were unambiguously characterized by complete elemental analysis, including sodium and oxygen analyses, TG/DTA, FTIR, single-crystal X-ray structure analysis, (solid-state and solution) 31P NMR and solution 183W NMR spectroscopy. X-ray crystallography revealed that 1 with Ci symmetry was composed of a tetra-HfIV cluster cation species [Hf4(μ3-O)2(μ-OH)2(H2O)4]10+ sandwiched between 2 di-lacunary Dawson polyoxometalates (POMs), [P2W16O59]12?, and it was isostructural with the previously reported Zr4 analogue. Thus, a pair of Hf- and Zr-containing POMs belonging to the same structure-family was built up. 相似文献
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《Inorganic chemistry communications》2003,6(7):803-806
The crystal structure of the compound [Cu3(μ-ox)3(μ-4,4′-bpy)2(4,4′-bpy)2]n 1 (ox=oxalato, 4,4′-bpy=4,4′-bipyridine) is comprised of two-dimensional sheets in which copper(II)–oxalato chains are cross-linked by bridging bidentate 4,4′-bpy ligands. Metal centers show a tetragonally elongated octahedral environment formed by four oxygen atoms from two asymmetrically coordinated oxalato ligands and two nitrogen atoms from two trans-coordinated 4,4′-bpy molecules. The magnetic measurements show the occurrence of weak ferromagnetic couplings. 相似文献
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A new compound (NH4)2[Ni(H2O)5(NH3)]2[V10O28]·4H2O (1) containing a {V10O28} 6− anionic cluster and a novel complex cation, [Ni(H2O)5(NH3)]2 +, has been synthesized and fully characterized by single crystal X-ray crystallography, spectroscopy and thermogravimetric analysis. The presence of the ammonia ligand in the complex cation in 1 was established unambiguously by X-ray crystallography and variable temperature (200–400 °C) thermogravimetric analyses in combination with FTIR spectroscopic studies. The formation of the novel complex species {Ni(H2O)5(NH3)}2 + during the synthesis of 1 can be rationalized in terms of ligand substitution involving {Ni(H2O)6}2 +. 相似文献
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A novel octa-nuclear cerium(III)-containing organic-inorganic hybrid polyoxometalate [N(CH3)4]8H16[{Ce(η1-C6H5NO2)2(H2O)6[Ce(H2O)3(α2-P2W17O61)]}{Ce(η2-C6H5NO2)2(H2O)5[Ce(H2O)(α2-P2W17O61)]}]2·90H2O (C6H5NO2 = isonicotinic acid) (1) was obtained, which had been hydrothermally synthesized and characterized by IR spectrum, thermogravimetric analysis (TGA), and X-ray single-crystal diffraction. Structural analysis indicated at 1 is composed of four lacunary Dawson-type units [α2-P2W17O61]10 − joined together by eight cerium cations forming an uncommon zigzag tetrameric structure with eight isonicotinic acids as the organic pendants coordinating to the cerium cations. Magnetic property studies indicate that obvious antiferromagnetic interactions exist in eight Ce3 + cations. 相似文献