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1.
The self-assembly of Co(OAc)·4H2O with H2tbip and bipy (H2tbip = 5-tert-butyl isophthalic acid, bipy = 4,4'-bipyridine) generates one new complex, [Co3(tbip)2(Htbip)2(bipy)]n, which has been characterized by elemental analysis, X-ray diffraction, and IR spectroscopy. Single-crystal X-ray analysis reveals that it crystallizes in the triclinic space group P1 with a = 9.471(6), b = 12.597(8), c = 12.899(8), α = 84.660(7), β = 70.548(7), γ = 81.965(7)o, V = 1435.1(15)3, Mr = 1215.85, Dc = 1.407 g/cm3, Z = 1, F(000) = 629, μ(MoKα) = 0.926 mm-1, the final R = 0.0623 and wR = 0.1724. The complex consists of a tbip bridged trinuclear cobalt() unit and is further linked by 4,4'-bipyridine molecule to form a 2D supramolecular network. 相似文献
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Two new one-dimensional coordination polymers,[Zn(L)(phen)]n 1 and {[Co2(L)2(phen)2]·2H2O}n 2(H2L=5-methoxyisophthalic acid,phen=1,10-phenanthroline),have been obtained by hydrothermal conditions.According to their single-crystal X-ray diffraction analyses,complex 1 crystallizes in the monoclinic system,space group P2/c with a=8.9195(11),b=12.3620(15),c=17.0211(18),β=106.690(5)o,V=1797.7(4)3,the final R=0.0298 and wR=0.0715 for 3351 independent reflections with Rint=0.0353.Complex 2 crystallizes in the monoclinic system,space group C2/c with a=24.981(4),b=11.1204(19),c=18.125(3),β=132.5620(10)o,V=3708.5(11)3,the final R=0.0349 and wR=0.0914 for 3424 independent reflections with Rint=0.0214.Both 1 and 2 show L-bridged one-dimensional chain.1 and 2 are further assembled by π-π and hydrogen bonding interactions into 2-D layer structures,and they also display 3-D supramolecular frameworks through their other hydrogen bonds.Zn(Ⅱ) ion is five-coordinated with a distorted trigonal bipyramidal coordination geometry,while Co(Ⅱ) ion is six-coordinated and resides in a distorted octahedral coordination geometry.Additionally,complex 1 shows fluorescence in the solid state at room temperature. 相似文献
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通过水热法合成了两种锌配位聚合物{[Zn(ic)(bip)]·2H2O}n (1)和[Zn(ic)(bpe)]n (2)(H2ic=衣康酸,bip=3,5-二(1-咪唑基)吡啶,bpe=1,2-二(4-吡啶基)乙烯),并通过X射线单晶衍射和元素分析对其结构进行了表征.配合物1和2均为含有一维金属-羧酸链的二维(4,4)格子层结构.此外,对它们的热重、粉末X射线衍射和固体荧光性能进行了考察.与配体bip相比,1的发射光谱发生了明显的蓝移(~78 nm),可能归因于配体到金属的电荷转移;2显示与游离的bpe配体相似的荧光性质,轻微的红移可能是因为与金属离子之间的配位作用导致的. 相似文献
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在pH为3的醇水混合溶剂中合成了β-丙氨酸、1,10-邻菲咯林、铜的三元配合物,测定了配合物的晶体结构.晶体属单斜晶系,Pī空间群,晶胞参数a=1.0045(2) nm, b=1.2132(2) nm, c=0.71682(14) nm, α= 93.88(3)°, β= 94.31(3)°, γ= 99.81(3)°, V=0.8555(3) nm3, Z=2, Dc=1.669 Mg·m-3, μ=1.326 mm-1, F(000)=442, R=0.0457, Rw=0.1179.配合物中铜离子的配位数为5,分子间通过氢键构成三维网状结构. 相似文献
5.
Two novel complexes {[Co(A-glu)(Im)2]·0.5H2O}n (1) and [Cd(A-glu)(Im)3]n (2) (H2A-glu=N-acetyl-L-glutamic acid, Im=imidazole) have been synthesized from the reaction of H2A-glu with Co(CH3COO)2·4H2O or Cd(CH3COO)2·2H2O in the presence of Im. Both of the complexes display different coordination environment and similar one-dimensional chain structure. The magnetic susceptibility measurements for 1 show a weak antiferromagnetic interaction between two cobalt(Ⅱ) ions bridged by A-glu ligand. The complex 2 exhibits an intense fluorescent emission in solid state at room temperature. 相似文献
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The title compound [Co(IM2-Py)(PCA)(N3)2] (IM2-Py = 2-(2'-pyridyl)-4,4,5,5-te-
tramethylimidazoline-1-oxyl, PCA = 2-pyridine carboxylic acid) has been prepared and structurally
characterized by elemental analysis, IR spectra and X-ray diffraction. It crystallizes in monoclinic,
space group P21/c with a = 13.169(3), b = 11.235(2), c = 15.596(3) (A), β = 104.70(3)°, V = 2232.0(8) (A)3, C18H21CoN1oO3, Mr = 484.38, Z = 4, Dc = 1.441 g/cm3,μ(MoKα) = 0.811 mm-1, F(000) = 1000,the final R = 0.0563 and wR = 0.1010. The nitronyl nitroxide (NIT2Py) was reduced to IM2-Py, and another NIT2Py oxidated to PCA. The self-redox reaction between the radicals was observed. The cobalt(Ⅱ) ion is six-coordinated into a distorted octahedral geometry. Meanwhile, the intermolecular hydrogen bonds result in the dimer. 相似文献
10.
Three new lanthanide complexes with the formulae [Eu2(TsGly)6(phen)2(H2O)2] (1), [Ln(TsGly)2(phen)2-(H2O)2]C1·2H2O [Ln=Er(2a) and Yb (2b), TsGly=N-p-tolylsulfonylglycinate, phen= 1,10-phenanthroline] were synthesized. Crystallographic data for 1: monoclinic, P21/n, a= 1.29791(16) nm, b= 1.9034(2) nm, c= 1.7596(2) nm,β=93.410(3)°, V=4.3394(9) nm^3, Z=4, R1 =0.0326, wR2=0.0771; and for 2b: triclinic, P1, a= 1.2674(2) nm, b= 1.4405(2) nm, c= 1.4809(3) nm, a= 113.256(3)°, β= 108.253(3)°, γ=94.739(3)°, V=2.2922(7) nm°3, Z=2, R1=0.0292, wR2=0.0669. X-ray diffractional analysis reveals that compound 1 adopts dinuclear structure with fourfold bridging TsGly ligands between the Eu(Ⅲ) centers, while compound 2b features an unusual mononuclear structure. 相似文献