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首页> 外文期刊>Crystal growth & design >Six new 2D or 3D metal-organic frameworks based on bithiophene-containing ligand and dicarboxylates: Syntheses, structures, and properties
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Six new 2D or 3D metal-organic frameworks based on bithiophene-containing ligand and dicarboxylates: Syntheses, structures, and properties

机译:基于含联噻吩的配体和二羧酸盐的六个新的2D或3D金属有机框架:合成,结构和性质

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摘要

Six new metal-organic frameworks (MOFs), namely, {[Cd(BPBP) _(0.5)(hfipbb)]·0.5DMF}_n (1), {[Zn(BPBP) 0.5(hfipbb)]}_n (2), {[Co(BPBP)_(0.5)(hfipbb) ·0.5DMF]}_n (3), {[Zn(BPBP)(trans-chdc)]·H 2O}_n (4), {[Zn_2(BPBP)(4,4′-sdb) _2]}_n (5), and {[Zn_2(BPBP)(oba) _2]·H_2O·DMA}_n (6) (BPBP = 5,5′-bis(4-pyridyl)-2,2′-bithiophene, H_2hfipbb = 4,4′-(hexa-uoroisopropylidene)bis(benzoic acid), trans-H_2chdc = trans-1,4-cyclohexanedicarboxylic acid, 4,4′- H_2sdb = 4,4′-sulfonyldicarboxylic acid, H_2oba = 4,4′- oxybis(benzoic acid), DMF = N,N-dimethylformamide, DMA = N,N-dimethylacetamide), have been hydrothermally synthesized. These compounds were characterized by IR spectroscopy, elemental analysis and X-ray single-crystal diffraction. Compounds 1-3 are isostructural and display 3D 2-fold interpenetrating frameworks with rare {4~4.6~(10).8} mab topologies. Compound 4 exhibits a 3D diamond-type (dia, 66) framework of 6-fold interpenetration. Compound 5 shows a 2D network with {4~4·6~2}-sql topology, which consists of 1D [Zn_2(4,4′-sdb)_2]_n chains. Compound 6 possesses a 3-fold interpenetrating 3D framework with 6-connected {4~(12)·6~3} pcu topology. Magnetic studies reveal that compound 3 exhibits antiferromagnetic behavior. Thermal stabilities for 1-6 and photoluminescence properties of the compounds 1, 2, 4, 5, and 6 have been examined in solid states at room temperature. Furthermore, the UV-vis absorption spectra and optical energy gap of 3 were also investigated.
机译:六个新的金属有机框架(MOF),即{[Cd(BPBP)_(0.5)(hfipbb)]·0.5DMF} _n(1),{[Zn(BPBP)0.5(hfipbb)]} _ n(2 ),{[Co(BPBP)_(0.5)(hfipbb)·0.5DMF]} _ n(3),{[Zn(BPBP)(trans-chdc)]·H 2O} _n(4),{[Zn_2( BPBP)(4,4'-sdb)_2]} _ n(5)和{[Zn_2(BPBP)(oba)_2]·H_2O·DMA} _n(6)(BPBP = 5,5'-bis(4) -吡啶基)-2,2'-联噻吩,H_2hfipbb = 4,4'-(六氟异丙叉基)双(苯甲酸),反式-H_2chdc =反式-1,4-环己烷二甲酸,4,4'-H_2sdb = 4已经水热合成了,4′-磺酰基二羧酸,H_2oba = 4,4′-氧双(苯甲酸),DMF = N,N-二甲基甲酰胺,DMA = N,N-二甲基乙酰胺)。这些化合物通过红外光谱,元素分析和X射线单晶衍射进行表征。化合物1-3是同构结构,具有3D 2折叠互穿框架,具有罕见的{4〜4.6〜(10).8} mab拓扑。化合物4表现出6倍互穿的3D菱形(直径66)框架。化合物5显示具有{4〜4·6〜2} -sql拓扑的2D网络,它由1D [Zn_2(4,4'-sdb)_2] _n链组成。化合物6具有3互穿3D框架,具有6个连接的{4〜(12)·6〜3} pcu拓扑。磁性研究表明,化合物3具有反铁磁性行为。在室温下以固态检查了化合物1、2、4、5和6的1-6的热稳定性和光致发光特性。此外,还研究了3的紫外可见吸收光谱和光能隙。

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