The [Fe3(CO)6(μ3-Se)(μ-AsCH3{CpFe(CO)2})2(μ-CO)] (Cp=η5-C5H5) cluster has been obtained by the reaction of [Fe3(CO)9(μ3-Se)(μ3-AsCH3)] with [CpCo(CO)2]. Its crystal and molecular structures have been determined by X-ray analysis. 相似文献
The crystal structure of a novel [Cu2(μ3-CO3)(SCN)2(py)4]n complex has been determined. It comprises of [CuCO3Cu]n infinite chains, running along the a-axis, and is in this aspect similar to the previously described [Cu(CO3)(4-aminopyridine)2]·H2O complex. The FTIR spectrum of [Cu2(μ3-CO3)(SCN)2(py)4]n has been recorded and analyzed. A CuCO3Cu intrachain coupling between Cu(II) atoms has been found to be responsible for the weak ferromagnetic properties of [Cu2(μ3-CO3)(SCN)2(py)4]n. 相似文献
By reacting Ni(CH3COO)2·6H2O with H2S in the presence of PPh3, the new Ni/S cluster of formula [Ni5(μ5-S)(μ3-S)2(μ2-S)(μ-CH3COO)(PPh3)5]PF6·C7H8·0.5CH2Cl2 has been isolated and characterized by X-ray diffraction analysis. Crystal data: space group P21/c, a=15.774(4), b=21.235(7), c=29.288(7) Å, β=95.66(4)°. The inner core consists of a square pyramid of five nickel atoms, linked together by a bridging acetate and four variously bridging sulfur ligands. The 31P{1H} NMR spectra in dichloromethane solution are consistent with the above geometry. 相似文献
吡唑与醋酸铜在p H 9的水溶液中,室温下通过自组装合成标题配合物。用元素分析和X-射线单晶衍射分析配合物的结构,结果显示,晶体属于单斜晶系,空间群为P2(1)/c,晶体单胞参数为a=11.648(2),b=19.869(3),c=9.703 5(16),β=99.535(2)°。配合物3个中心铜(Ⅱ)离子均采取四面体构型,氢氧根与3个铜离子均形成配位键,由于配体桥连使配合物形成螺旋链,螺旋链之间通过醋酸根连接。 相似文献
The thermal decomposition of Ru3(CO)10(dppe) in refluxing benzene gives, in contrast to the pyrolysis of the dppm analogue, the tetranuclear cluster Ru4(μ-CO)(CO)9(η4-μ4-C6H4)(η2-μ1,μ4-PCH2CH2PPh2) (1) along with Ru3(CO)9(η2-μ1,μ2-C6H5)(η3-μ1,μ2-PPhCH2CH2PPh2) (2). The single-crystal structure analysis of 1 reveals a square-planar tetraruthenium skeleton containing a η4-μ4-benzyne ligand as well as a η2-μ1,μ4-phosphinidene–phosphine ligand. 相似文献
The reaction of Ph2PH with [Ru3(CO)10(μ-dppm)] (1) at 98°C gave [Ru3(μ-CO)(CO)6(μ-PPh2)2(μ3-CH2PPh)] (7) in 20% yield. Compound 7 was characterized by elemental analysis, 1H and 31P{1H} NMR and mass spectroscopic data and also by a single crystal structure determination. The compound is shown to consist of a triruthenium cluster with an unusual example of a triply bridging CH2PPh ligand and two doubly bridging PPh2 ligands. 相似文献
A chiral 3-D open-framework coordination polymer [Co3(μ3-OH)(μ5-btc)(μ6-Hbtc)(H2O)3·6H2O]n was successfully obtained from the mixture of Co(CH3COO)2·4H2O, H3btc (where H3btc=benzene-1,2,4-tricarboxylic acid), NaOH and H2O under hydrothermal condition, which contains a novel and unprecedented coordination mode of btc (see Scheme 1
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Scheme 1. Coordination modes of btc in the compounds having been synthesized. I, μ4-btc (in the literature [9]); II, μ6-btc and III, μ5-btc (see this paper).). 相似文献
A 3D coordination polymer, {[Cd15(μ4-Mtta)12(μ3-Mtta)6(μ3-SO4)4(μ3-OH)4] · 6H2O}n (1) (Mtta = 5-methyl-tetrazolate), which shows the rare multifunction of in situ formed Mtta and bright photo-induced blue emission, was isolated from a hydrothermal reaction of CdSO4 · 8/3H2O, NaN3 in acetonitrile and water. 相似文献
Nano rods of a new 1D polymeric lead(II) complex containing the Pb2-(μ-N3)2 motif, [Pb(phen)(μ-N3)(μ-NO3)]n (phen?=?1,10-phenanthroline), has been synthesized by a sonochemical method. The new nano-structure was characterized by scanning electron microscopy, X-ray powder diffraction, elemental analyses and IR spectroscopy. A single crystalline material was obtained by applying a heat gradient to a solution of reagents. The single crystal X-ray data showed the coordination number of the Pb2+ ions to be eight (PbN4O4), with the Pb2+ ions having “stereo-chemically active” electron lone pairs; the coordination sphere was hemidirected. The chains of [Pb(phen)(μ-N3)(μ-NO3)]n interact with each other via π–π interactions to create a 3D framework. PbO nanoparticles were obtained by thermolysis of 1 at 180?°C with oleic acid as a surfactant. The average diameter of the nanoparticles was estimated to be 33?nm by the Scherrer equation. The morphology and size of the prepared PbO samples were further observed using SEM. 相似文献
A new metal-organic framework (MOF) [Co2(μ3-OH)(μ2-OH2)(oba)(Hoba)(pyz)]n(1), (oba = 4,4’-oxybis(benzoate), pyz = pyrazine) has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction, infrared spectroscopy, thermal gravimetric analysis, elemental analysis, and magnetic techniques. The framework defines an eight-connected CsCl net with 424·64 topology symbol. To the best of our knowledge, this is the first eight-connected CsCl-type net built on unique [Co2(μ3-OH)(μ2-OH2)(CO2)3]2 molecular building blocks (MBBs). 相似文献
A new nano-flower lead(II) azido coordination polymer from the ligand, orthophenanthroline (o-phen), [Pb(o-phen)(μ1,1-N3)(μ1,3-N3)]n (1), was synthesized by a sonochemical method. Compound 1 was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), elemental analyses and IR spectroscopy. Single crystalline material was obtained using a heat gradient applied to a solution of the reagents. The structure of 1 is a coordination polymer of lead(II) containing the Pb-(μ1,1-N3)(μ1,3-N3) motif, formed of one-dimensional chains. The structure of the 1 was optimized by density functional theory. Structural parameters and IR spectra for 1 are consistent with the crystal structure. Pure phase PbO nanoparticles were obtained by thermolysis of 1 with oleic acid as a surfactant at 180 and 200 °C an air. PbO nanoparticles were characterized by XRD and SEM. 相似文献
The tetranuclear ynenyl complex [Ru4(μ-η2-Me2pz)(μ4-η4-MeCHCCCMe)(μ-CO)(CO)10] (Me2pz=3,5-dimethylpyrazolate) has been prepared by reaction of [Ru3(μ-H)(μ-η2-Me2pz)(CO)10] with 2,4-hexadiyne and has been characterized by X-ray diffraction methods. It consists of an unusual broken-wing butterfly (spiked triangle) tetraruthenium framework (64-electron) with all the metal atoms bridged by a hex-2-yn-4-en-4-yl ligand (7-electron donor). This type of coordination is unprecedented for ynenyl ligands. 相似文献
The reaction of EuOCl (EuCl3) with dibenzoylmethane (HDBM) in the presence of N-methylmorpholine yields a novel Eu5 square-pyramid polynuclear complex with a rare μ4-OH bridging mode, Eu5(μ4-OH)(μ3-OH)4(μ-DBM)4(DBM)6 (1). The compound was characterized by elemental analysis, IR, fluorescence and Mössbauer spectra as well as by an X-ray single crystal structure determination. Crystallographic data for 1, C150H115Eu5O25, monoclinic, P21/c, a=22.223(5), b=17.427(1), c=35.708(5) Å, β=100.11(2)°, V=13614(4) Å3, Z=4, R1=0.0979, wR2=0.1695. 相似文献
In order to obtain a better anhydrous precursor for various applications in materials science and catalysis, thermal dehydration reactions of Y(TFA)3(H2O)3 (TFA = trifluoroacetate) (A) were investigated. Thermal treatment of A at different temperatures under vacuum (5 × 10?2 mm) for several hours failed to give totally anhydrous yttrium trifluoroacetate (as indicated by IR). Two different complexes, a partially dehydrated [Y(μ,η1:η1-TFA)3(THF)(H2O)]1∞·THF (1) and a partially hydrolyzed [Y4(μ3-OH)4(μ,η1:η1-TFA)6(η1-TFA)(η2-TFA)(THF)3(DMSO)(H2O)] · 6THF (2), were obtained with good and moderate yield, respectively, by crystallization of two different thermally treated batches of A from THF (or THF + DMSO) at room temperature. More efficient dehydration of A could be achieved at 200 °C in a furnace, the obtained anhydrous yttrium tris-trifluoroacetate giving Y(TFA)3(THF)2 (3) on crystallization from THF. All the products were characterized by elemental analyses, FT-IR and 1H NMR spectroscopy as well as thermo-gravimetric analysis. In addition, single crystal X-ray structures are reported for 1 and 2, which show either a terminal (η1 and η2) or bridging (μ,η1:η1) bonding behavior of the TFA ligand. 相似文献
Dissociation of C60 from Ir(CO)(PPh3)2(Cl)(η2-C60) in a binary mixture of solvents (solvent1 and solvent2) produced non-equilibrium mixtures of Ir(CO)(PPh3)2(Cl)(solvent1) and Ir(CO)(PPh3)2(Cl)(solvent2). Once the solvated species were produced, they underwent a relative fast solvent exchange between them to produce an equilibrium mixture. 相似文献
In this work, we present a rare earth metal–organic framework, Y2(H2O)(BDC)3(DMF)]·(DMF)3 (BDC = 1,3-benzenedicarboxylate) 1, with a rare 2D (42.6)(45.6)2(48.62)(49.65.8) net, helical tubes with opposite chirality interweaving of triple-helical chains, opened windows and high thermal stability. 相似文献