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1.
《Microporous and mesoporous materials》2007,98(1-3):16-20
Deprotonation of 4,4′-biphenyldicarboxylic acid (H2BPDC) with triethylamine followed by the copolymerization with Y(III) in N,N-dimethylformamide (DMF) at room temperature yields a new three-dimensional (3-D) porous metal–organic coordination network, [Y2(BPDC)3(DMF)2(H2O)2]n · (DMF)n · (H2O)n (1). Compound 1 (C24.50H19N1.50O9Y) crystallizes in the triclinic P-1 space group (a = 8.220 (2), b = 13.998 (4), c = 14.212 (4) Å, α = 111.058 (5)°, β = 90.187 (5)°, γ = 94.318 (5)°, V = 1520.9 (7) Å3, and Z = 2). X-ray crystallography reveals that 1 consists of a 3-D framework contained open 1-D channels with the dimension of 5 × 10 Å along the crystallographic a axis. The adsorption measurements show that compound 1 can adsorb N2, Ar and CO2 into its pores. The adsorption isotherms for MeOH and H2O were also measured. 相似文献
2.
Jing-cai Yao Jin-bo Guo Jian-ge Wang Yu-fang Wang Li Zhang Cui-ping Fan 《Inorganic chemistry communications》2010,13(10):1178-1183
Two new 3d-4f complexes, [LnCo(3,5-pdc)2(3,5-Hpdc) (H2O)7]·H2O (Ln = Gd 2, La 3; 3,5-pdcH2 = pyridine-3,5-dicarboxylic acid), have been synthesized by the self-assembly of Ln(III) oxides, 3,5-pdcH2 and the template molecule [Co(3,5-pdc)(H2O)5]·H2O (1) under hydrothermal conditions. Heterometallic complexes 2 and 3 are isostructural with supracyclic units containing four Ln(III) ions and two Co(II) ions, in which Co(II) and Ln(III) are linked by the deprotonated 3,5-pdcH2 ligands in three kinds of bridging modes. The weak antiferromagnetic coupling of complex 2 and 3 imply that the large 3,5-pdc bridges with the greater separation ( > 7 Å) cannot lead to long range magnetic ordering, the strength of dn-fn exchange coupling increasing with decreases the size of the lanthanide ion. 相似文献
3.
Two new organic-inorganic hybrid materials, 1-(2-fluorophenyl)piperazine-1,4-diium tetrachlorocuprate, (C10H15FN2)[CuCl4] (I) and 1-(2-fluorophenyl)piperazin-4-ium nitrate, (C10H14FN2)[NO3] (II), have been synthesized by an acid/base reaction at room temperature in the presence of 1-(2-fluorophenyl)piperazine as an organic-structure directing agent and their structures were determined by single crystal X-ray diffraction. Compound (I), (C10H15FN2)[CuCl4], crystallizes in the monoclinic system and P21/c space group with a = 7.5253 (2), b = 20.6070 (7), c = 9.7281 (3) Å, β = 103.6730 (17)°, V = 1465.82 (8) Å3 with Z = 4. Full-matrix least-squares refinement converged at R = 0.037 and wR(F2) = 0.088. Compound (II), (C10H14FN2)[NO3], belongs to the monoclinic system, space group P21/c with the following parameters: a = 10.8034 (2), b = 7.5775 (1), c = 14.4670 (3) Å, β = 111.761 (2)°, V = 1099.91 (4) Å3 and Z = 4. The structure was refined to R = 0.044, wR(F2) = 0.136.In the structures of (I) and (II), the anionic and cationic entities are interconnected by means of set of hydrogen bonding contacts forming three-dimensional networks. Intermolecular interactions were investigated by Hirshfeld surfaces and the contacts of the four different chloride atoms were notably compared. The results of the optimized molecular structure are presented and compared with the experimental one. The Molecular Electrostatic Potential (MEP) maps and the HOMO and LUMO energy gap of both compounds were computed. The vibrational absorption bands were identified by infrared spectroscopy. Theory (DFT) calculations of normal mode frequencies are compared with experimental ones. 相似文献
4.
Three new two-dimensional coordination polymers were constructed from 2,6-bis(imidazole-1-yl)pyridine (2.6-bip), terephthalic acid (1,4-bdcH2), and M(NO3)∙nH2O (M = Co, Cd). [M(2,6-bip)(1,4-bdc)] (1: M = Co; 2: M = Cd) were prepared under hydrothermal condition, whereas [Cd(2,6-bip)(1,4-bdc)∙xDMF] (3) was obtained under solvothermal condition in DMF solvent. Single-crystal X-ray analyses revealed the first example of a 2D 4-connected net of 66 topology in 1 and 2 and a rare 2D 4,5-connected net of 4,5 L20 topology in 3. All these complexes were thermally robust and emissive in solid-states. This work confirmed the versatility of using hingelike 2,6-bip as a linker and the importance of solvent effect in the process of framework formation. 相似文献
5.
A new mononuclear Dy(III) complex, namely {[Dy(tbpy)2(NO3)(DMF)]⋅ DMF} (1) (tbpy = 6-(tetrazol-5-yl)-2,2′-bipyridine, DMF = N,N-dimethylformamide), has been synthesized and characterized. Structural measurements reveal that the Dy(III) ion displays a distorted tricapped trigonal prism with two mono-anionic tridentate chelating ligands, nitrate anion and N,N-dimethylformamide molecule. Magnetic investigation indicates that the title complex 1 exhibits field-induced single-ion magnet behavior. Moreover, the studies on photoluminescence properties show that complex 1 displays relatively strong fluorescent emission, which are typical narrow emission bands of lanthanide ion. 相似文献
6.
Synthesis,characterisation and cryomagnetic studies of a novel homonuclear Nd(III) Schiff base dimer
《Inorganic chemistry communications》2007,10(4):489-493
A novel homodinuclear complex [NdIII(L)(NO3)]2 (1) has been synthesised [H2L = N1,N3- bis(salicylideneimino)diethylenetriamine, a pentadentate Schiff base with N3O2 donor set] and characterised with spectroscopic and micro-analytical techniques. Single crystal X-ray diffraction study reveals a centrosymmetric binuclear neutral entity [space group, P21/n; a = 12.911(5); b = 11.938(5); c = 13.960(5) Å; Z = 4] where Nd(III) metal centers are bridged together by two phenoxo oxygen atoms each coming from the two ligands. The most interesting fact is that two similar “salen” moieties of each ligand are behaving completely different in their coordination. In the doubly deprotonated ligand (L2−), one phenoxo oxygen is mono coordinated to the metal, whereas its immediate neighbour on the other end bridges the two Nd(III) centers. The distance between the Nd(III) centers is found to be 3.884(3) Å. Temperature dependence (2–300 K) magnetic susceptibility study suggests the presence of an antiferromagnetic interaction operating via two phenoxo bridges. 相似文献
7.
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
8.
We report preparation and characterization of a novel complex cis–mer [Co(L)2]I2 CH3OH (1) (L-N,N-bis(1-(3,5-dimethylpyrazolylmethyl)amine)) isolated from the [Co0–1-hydroxymethyl-3,5-dimethylpyrazole–MoO3–NH4I] system. A two-ring scorpionate ligand (L) was obtained in situ via redox and condensation processes. The catalytical properties of MoO3 are responsible for the formation of this atypical scorpionate ligand. Compound (1) crystallizes in the orthorhombic space group Pna21 with a = 24.5578(14) Å, b = 13.8388(8) Å, c = 9.6072(7) Å, V = 3265.0(4) Å3 and Z = 4. The metal ion coordinates through six nitrogen atoms which belong to two tridentate ligands forming a deformed octahedron. The complex was characterized by IR, FIR, UV–VIS and magnetic investigations. The ligand was ranked in the spectrochemical series between imidazole and bipyridine. The crystal field splitting of tridentate N-donor L was found to be smaller in comparison to e.g. bidentate bipyridine. 相似文献
9.
A one-dimensional (1-D) selenidostannate, [AEPPH2]2[Sn5Se12] (AEPP = N-aminoethylpiperazine) (1), has been prepared under solvothermal condition and characterized. Single crystal X-ray analysis reveals that compound 1 crystallizes in the triclinic space group P-1, a = 10.6351(7) Å, b = 10.6850(7) Å, c = 10.7771(7) Å, α = 61.3440(10)°, β = 62.4420(10)°, γ = 67.4680(10). With distinct linkage modes between SnSe4 tetrahedrons and SnSe6 octahedrons, a secondary building unit (SBU) [Sn5Se14] is formed. Compound 1 contains infinite bead-like chains built up by the [Sn5Se14] SBUs, and the protonated [AEPPH2]2 + cations are located between the chain spaces. A pseudo 3-D network is formed through C–H···Se and N–H···Se hydrogen bonds between adjacent chains. Its optical property and theoretical band structure and density of state (DOS) calculations have also been studied. 相似文献
10.
Guo-Min Wang Rong-Jia Wei Li-Li Hu Xiao-Jun Sun Rong-Bin Huang Lan-Sun Zheng Jun Tao 《Inorganic chemistry communications》2009,12(7):622-624
A hexanuclear Fe(III) compound with new core topology, [Fe6(OMe)2(DHMP)4(AD)2] (1, H3DHMP = (E)-2-((1,3-dihydroxy-2-methylpropan-2-ylimino)methyl)phenol, H2AD = adipic acid), is reported. The hexanuclear Fe(III) core can be viewed as two Fe3(DHMP)2 units connected through double μ2-OMe? bridges, featuring adjacent Fe···Fe distances of 3.105 and 3.109 Å within unit and 3.111 Å between units, respectively. Variable temperature magnetic studies indicate antiferromagnetic exchanges between adjacent Fe(III) ions and which mediated by μ2-OMe? bridges is stronger than those by DHMP alkoxo bridges. Magnetic-structural correlation is also proposed. 相似文献
11.
Six isomorphous metal–organic frameworks: M2(ATPA)3(DMF)2(H2O)2 (M = Nd (1), Sm (2), Eu (3), Gd (4), Tb (5), Dy (6); ATPA = 2-aminoterephthalate, DMF = N,N-dimethylformamide), were synthesized by the self-assembly of lanthanide ions, 2-aminoterephthalate, DMF and H2O. Their crystal structures determined by X-ray crystallography reveal interpenetrating frameworks. Compounds 2, 3, 5 and 6 exhibit mainly ligand luminescence at room temperature while 3 exhibits enhanced Eu3+ emissions at 77 K. Magnetic studies indicate 4 is paramagnetic with slight Gd3+–Gd3+ couplings. 相似文献
12.
Gao-Juan Cao Wei-Hui Fang Shou-Tian Zheng Guo-Yu Yang 《Inorganic chemistry communications》2010,13(9):1047-1049
An organically-templated chiral borogermanate (CH3NH3)2[Ge(B4O9)] (1), has been solvothermally synthesized and characterized by elemental analysis, IR, PXRD, TGA, single-crystal X-ray diffraction and UV–vis spectrum. It crystallized in the monoclinic space group C2 (No. 5) with a = 10.249(1) Å, b = 9.449(1) Å, c = 6.956(2) Å, β = 131.76(2)°, V = 502.43(19) Å3, Z = 2. The structure is constructed by alternate linkage of GeO4 tetrahedra and B4O9 clusters to form a zeotype framework with diamond topology. Four intersecting channels with different sizes are observed. Large circular 10-ring channels are clearly extended along the [001] direction, 9-ring channels are running along the [101], [110], and [112] directions, respectively. Additionally, two pairs of the right- and left-handed channels couple together along the [100] and [010] directions, respectively. The preliminary investigations show that compound 1 exhibits second-harmonic generation (SHG) response and ferroelectric properties. 相似文献
13.
Jia-Min Li Jin-Zhou Li Heng-Qiang Zhang Li-Ying Xu 《Inorganic chemistry communications》2010,13(5):573-576
A new cobalt complex, [Co(L)2·(H2O)2](HL = 4-hexanoyl-3-methyl-1-phenyl-1H -pyrazol-5(4H)-one), was synthesized by us. The complex was characterized by single crystal X-ray diffraction, IR, UV, fluorescence spectra and thermogravimetric analysis. The results of characterization showed that the crystal is monoclinic system with crystal parameters: a = 15.2439(12) Å, b = 7.4101(6) Å, c = 15.7381(18) Å, and Z = 2, S = 1.074. It was found that the Co2+ is located in the inversion center of the complex. The Co(II) had an ideal octahedral coordination environment with four oxygen atoms of HL ligands in the equatorial plane and two water molecules in axial positions. The complex exhibits yellow emission as the result of the fluorescence from the intraligand emission excited state. 相似文献
14.
Xing-wu Tan Bai-mu Wang Ye Wang Shu-zhong Zhan 《Inorganic chemistry communications》2010,13(9):1061-1063
The Mannich reaction of 2-aminoethanol, 2-tert-butyl-4-methylphenol, and formaldehyde at the ratio sets of 1:2:2 provided a new ligand, N-(1-ethanol)-N,N-bis(3-tert-butyl-5-methyl-2-hydroxybenxyl)amine (H3L). In the presence of base, H3L reacted with FeCl3·6H2O to form a dinuclear Fe(III) complex [Fe2L2] 1. The value of μeff at room temperature (5.95 μB), is much less than the expected spin-only value (8.37 μB) of two high spin (hs) Fe3+ (S = 5/2) ions [μ = g[∑ ZS(S + 1)]1/2], indicating there were strong interactions between Fe3+ ions. The effective magnetic moment (μeff) decreased abruptly with cooling to a minimum value of 0.1 μB at 2 K. It was worth noting that Fe3+ ions of 1 exhibited thermally induced quartet ? doublet spin transitions, and these transitions were abrupt. The magnetic behaviors of 1 denoted the occurrence of intramolecular anti-ferromagnetic interactions. J (? 13.58 cm? 1) agrees with the result from Gorun–Lippard equation, ? J (cm? 1) = Aexp(BP(Å) = 12.9). 相似文献
15.
Paula M. Cantos Mark Frisch Christopher L. Cahill 《Inorganic chemistry communications》2010,13(9):1036-1039
A 3D uranium-pyridinedicarboxylate, compound (1) [UO2(C7H3NO4)], represents the final member of a series of materials incorporating a series of 2,n-pyridinedicarboxylic (pydc) acids (n = 3,4,5,6). The resulting crystal structure [FW = 419.13, monoclinic, P21/n, a = 9.0096(3) Å, b = 8.1371(2) Å, c = 11.6954(4) Å, V = 852.45 Å3, Z = 4] was determined by single crystal X-ray diffraction and fluorescent properties were investigated. Additionally, the complete series of uranium-2,n-pydc materials was examined on a basis of fluorescent behaviors and architectural similarities. 相似文献
16.
A new reduced zincic molybdophosphate, (H2bpp)3[Zn3Mo12VO24(OH)6(H2O)2(HPO4)6(PO4)2]·2H2O 1 (bpp = 1,3-bis(4-pyridyl)propane) has been hydrothermally synthesized and characterized by elemental analysis, IR, TG, and single-crystal X-ray diffraction. Compound 1 crystallizes in the tetragonal space group I 41/a c d with a = 31.8033(4) Å, b = 31.8033(4) Å, c = 34.5593(8) Å, V = 34955.0(10) Å3, and Z = 16 and exhibits a 4,6-connected 3-D framework with (32.84)(34.42.83.95.10) topology. The basic building blocks of [Zn(2)(Mo6P4)2] are linked through [Zn(3)O6] octahedra and [Zn(1)O4] tetrahedra to construct 1-D chains along four different directions. Such 1-D chains are further connected by [Zn(1)O4]2+ linkers to form a 3-D intricate framework with helical channels occupied by protonated bpp and water molecules. Additionally, the electrochemical property of the 1-CPE has been studied in detail. 相似文献
17.
Richard S. Herrick Brenton R. Franklin Christopher J. Ziegler Anıl Çetin 《Inorganic chemistry communications》2009,12(12):1209-1211
The reaction of 1,1′-ferrocenedicarbonyl chloride with pyrazole or 3,5-dimethyl pyrazole generates novel 1,1′-ferrocene bis(amide) compounds 1 and 2, respectively. The crystal structure of 1 shows that the pyrazole rings are essentially co-planar with each other and with the cyclopentadienyl rings. Attempts to use the complexes as a chelating ligand were unsuccessful. Instead, treatment of 1 or 2 with Mo(CO)4(pip)2, pip = piperidine, led to displacement of the pyrazole ligands and formation of the known amide compound, 1,1′-ferrocene bis carbonyl piperidine. Replacement of the pyrazole is ascribed to the weakness of the amide bond caused by the aromaticity of the pyrazole ring. Crystal data for C18H14FeN4O2 (1): monoclinic P2(1)/c, a = 13.3907(18) Å, b = 10.2112(14) Å, c = 11.3082(16) Å, β = 105.209(2)°, V = 1492.1(4) Å3, Z = 4. 相似文献
18.
Mariola Puszyńska-Tuszkanow Marek Daszkiewicz Gabriela Maciejewska Maria Cieslak-Golonka 《Inorganic chemistry communications》2009,12(6):484-486
A novel Cu(II) coordination polymer, [Cu(ox)(DMSO)2]n (1) (ox-oxalate dianion, DMSO-dimethyl sulphoxide) has been prepared in the reaction of copper nitrate dihydrate and allantoin (5-ureidohydantoin) in DMSO/water solution. Compound (1) crystallizes in the monoclinic, space group P121/c1 with a = 5.1785(7), b = 13.6311(18), c = 8.5386(12) Å, β = 107.524(12)°, V = 574,76(14) Å3, Z = 4, Dcal = 1779 mg/m3, R1 = 0.0449. The metal ion coordinates through four oxygen atoms belonging to two bidentate bridging oxalate ligands, and two oxygen atoms from two DMSO ligands forming an elongated octahedron. The crystal structure was confirmed by FT-IR and Uv–vis spectroscopic data. 相似文献
19.
The new dinuclear rhodium complex [(Cp*RhCl)2(bpp)](PF6) ([1](PF6), Cp* = pentamethylcyclopentadienyl, bpp = 3,5-bis(2-pyridyl)pyrazolate) was synthesized by the reaction of [Cp*RhCl2]2 with 3,5-bis(2-pyridyl)pyrazole (bppH). [1](PF6) was characterized by 1H- and 13C{1H}-NMR spectroscopy and X-ray diffraction. The distance between the two Rh atoms in [1](PF6) is 4.746(3) Å. A cyclic voltammogram of [1](PF6) in acetonitrile shows three-step reduction peaks at Epc = − 1.44, − 1.68 and − 1.88 V (vs. Fc+/Fc), which are assigned to the reduction of the two Rh(III) centers and the bpp− ligand, respectively. [1](PF6) catalyzes the reduction reaction of NAD+ (nicotinamide adenine dinucleotide) using HCO2− as a reductant. 相似文献
20.
《Inorganic chemistry communications》2007,10(6):685-689
Coordination polymers [Zn(imc)(L1)] · H2O, (1, imc = iminodiacetate, L1 = bis(N-imidazolyl)methane) [Zn(hba)2(L2)]2 · EtOH · 3H2O, (2, hba = p-hydroxybenzoate, L2 = bis(N-benzimidazolyl)methane), [Cd(mal)(H2O)(L3)](3, L3 = 1,4-bis(N-imidazolyl)butane, mal = maleate) have been prepared and structurally characterized. Complex 1 consists of hexa-coordinated central Zn ions and exhibits 2D network structure. The Zn atoms in 2 have tetrahedral coordination geometry, and are linked by bis(imidazolyl) ligands into 1D chain structure. The cadmium ions in 3 are hepta-coordinated with pentagonal bipyramidal geometry. Complex 3 displays 2D grid structure. The TGA showed that the coordination polymers are stable up to 200 °C. All the three complexes are emissive at room temperature in their solid state. 相似文献