One novel metal-organic framework(MOF), [Ba(L)(H_2O)_(1.5)]_n(1, H_2L =aniline-2,5-disulfonic acid), has been synthesized by hydrothermal method. Each barium atom is eleven-coordinated into a distorted monocapped pent...One novel metal-organic framework(MOF), [Ba(L)(H_2O)_(1.5)]_n(1, H_2L =aniline-2,5-disulfonic acid), has been synthesized by hydrothermal method. Each barium atom is eleven-coordinated into a distorted monocapped pentagonal antiprismatic arrangement. Compound 1 shows an interesting 3 D pillar-layered structure constructed from 2 D inorganic layers[Ba(SO_3)_2(H_2O)_(1.5)]_(n) and organic pillars of phenyl moieties of L2-linkages. The inorganic layers are supported by the organic pillars, generating a novel 3 D open framework structure with {3, 4~6, 5~5, 6~5,7~4}2{3}{5} topology. The result of fluorescence measurement can reveal that the decayed emission band centered at 492 nm may be caused by the interactions of the ligands and the metal ions.Compound 1 exhibits selective toward the adsorption of CO_2 over N_2 at 273 K.展开更多
Two Zn(II) coordination polymers, namely [Zn_2(bpy)(aobtc)(H_2O)_2]·2H_2O(1) and [Zn_2(bpy)(aobtc)(H_2O)]·4H_2O(2)(bpy = 4,4?-bipyridine, H4 aobtc = 3,3?,5,5?-azoxybenzenetetracarboxylic acid) have been hydr...Two Zn(II) coordination polymers, namely [Zn_2(bpy)(aobtc)(H_2O)_2]·2H_2O(1) and [Zn_2(bpy)(aobtc)(H_2O)]·4H_2O(2)(bpy = 4,4?-bipyridine, H4 aobtc = 3,3?,5,5?-azoxybenzenetetracarboxylic acid) have been hydrothermally synthesized through tuning the p H value of the reaction system(1, C_(26)H_(22)N_(4)O_(13)Zn_2, Mr = 729.21; 2, C_(26)H_(24)N_4O_(14)Zn_2, Mr = 747.23), and their structures have been determined by single-crystal X-ray diffraction analyses. Compound 2 has been further characterized by infrared spectra(IR), elemental analyses, thermal analyses and powder X-ray diffraction(PXRD) analyses. Additionally, the photoluminescence of 2 is also discussed. The structure demonstrates that the crystal of 2 belongs to the triclinic system, space group P1 with a = 8.41494(18), b = 9.59838(19), c = 17.6477(3) ?, α = 91.5098(16), β = 98.1439(17), γ = 90.4323(17)°, V = 1410.44(5) ?3, Z = 2, ρcalc = 1.759 g/cm^3, μ = 2.819 mm-1, F(000) = 760.0, R = 0.0311 and w R = 0.0839(I > 2σ(I)). Compound 1 shows a two-dimensional monolayer while compound 2 displays a novel 2D double-layered network constructed from monolayer motifs, which is similar to the single layer in 1. Further, each bilayer motif in 2 is interdigitated by two others in a parallel fashion to yield an unusual 2D → 3D interdigitated framework.展开更多
A novel zinc coordination polymer,[Zn 2 (bptc)(bpe)(H 2 O)] n (1,H 4 bptc=3,3,4,4-benzophenonetetracarboxylate,bpe=1,2-bis(4-pyridyl) ethane),has been prepared under hydrother-mal conditions.The crystal structure is o...A novel zinc coordination polymer,[Zn 2 (bptc)(bpe)(H 2 O)] n (1,H 4 bptc=3,3,4,4-benzophenonetetracarboxylate,bpe=1,2-bis(4-pyridyl) ethane),has been prepared under hydrother-mal conditions.The crystal structure is of monoclinic,space group C/2c with a=27.50(2),b=6.207(4),c=16.233(11),β=107.522(14)°,V=2642 (3)3,C 29 H 22 N 2 O 11 Zn 2,M r=705.27,Z=4,D c=1.773 g/cm 3,F(000)=1432,μ=1.887 mm-1,R=0.0421 and wR=0.1049 for 2594 observed reflections (I > 2σ(I)).X-ray single-crystal diffraction analysis shows that 1 features two-dimensional [Zn 2 (bptc)(H 2 O)] layers,which are further linked by the bpe ligands to give rise to a three-dimensional pillar-layered structure.According to the topology analysis,this framework can be simplified into a (4,6)-connected (4 4 ·6 2)(4 4 ·6 10 ·8) network.展开更多
基金supported by the Liaoning Provincial Education Department(No.L2015299)Innovative training program for College Students(Nos.201710148000118,201710148000147)
文摘One novel metal-organic framework(MOF), [Ba(L)(H_2O)_(1.5)]_n(1, H_2L =aniline-2,5-disulfonic acid), has been synthesized by hydrothermal method. Each barium atom is eleven-coordinated into a distorted monocapped pentagonal antiprismatic arrangement. Compound 1 shows an interesting 3 D pillar-layered structure constructed from 2 D inorganic layers[Ba(SO_3)_2(H_2O)_(1.5)]_(n) and organic pillars of phenyl moieties of L2-linkages. The inorganic layers are supported by the organic pillars, generating a novel 3 D open framework structure with {3, 4~6, 5~5, 6~5,7~4}2{3}{5} topology. The result of fluorescence measurement can reveal that the decayed emission band centered at 492 nm may be caused by the interactions of the ligands and the metal ions.Compound 1 exhibits selective toward the adsorption of CO_2 over N_2 at 273 K.
基金Financially supported by the National Natural Science Foundation of China(No.21571149)the Program for Chongqing Excellent Talents in University,the Fundamental Research Funds for the Central Universities(XDJK2013A027,XDJK2016C101)the Open Foundation of Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education(338080045)
文摘Two Zn(II) coordination polymers, namely [Zn_2(bpy)(aobtc)(H_2O)_2]·2H_2O(1) and [Zn_2(bpy)(aobtc)(H_2O)]·4H_2O(2)(bpy = 4,4?-bipyridine, H4 aobtc = 3,3?,5,5?-azoxybenzenetetracarboxylic acid) have been hydrothermally synthesized through tuning the p H value of the reaction system(1, C_(26)H_(22)N_(4)O_(13)Zn_2, Mr = 729.21; 2, C_(26)H_(24)N_4O_(14)Zn_2, Mr = 747.23), and their structures have been determined by single-crystal X-ray diffraction analyses. Compound 2 has been further characterized by infrared spectra(IR), elemental analyses, thermal analyses and powder X-ray diffraction(PXRD) analyses. Additionally, the photoluminescence of 2 is also discussed. The structure demonstrates that the crystal of 2 belongs to the triclinic system, space group P1 with a = 8.41494(18), b = 9.59838(19), c = 17.6477(3) ?, α = 91.5098(16), β = 98.1439(17), γ = 90.4323(17)°, V = 1410.44(5) ?3, Z = 2, ρcalc = 1.759 g/cm^3, μ = 2.819 mm-1, F(000) = 760.0, R = 0.0311 and w R = 0.0839(I > 2σ(I)). Compound 1 shows a two-dimensional monolayer while compound 2 displays a novel 2D double-layered network constructed from monolayer motifs, which is similar to the single layer in 1. Further, each bilayer motif in 2 is interdigitated by two others in a parallel fashion to yield an unusual 2D → 3D interdigitated framework.
基金Supported by the 973 program (No.2007CB815302,2009CB939803)the Chinese Academy of Sciences (No.KJCX2.YW.319 and KJCX2.YW.M10)+1 种基金the Knowledge Innovation Program of the Chinese Academy of Sciencesthe Fund of Fujian Key Laboratory of Nanomaterials (2006L2005)
文摘A novel zinc coordination polymer,[Zn 2 (bptc)(bpe)(H 2 O)] n (1,H 4 bptc=3,3,4,4-benzophenonetetracarboxylate,bpe=1,2-bis(4-pyridyl) ethane),has been prepared under hydrother-mal conditions.The crystal structure is of monoclinic,space group C/2c with a=27.50(2),b=6.207(4),c=16.233(11),β=107.522(14)°,V=2642 (3)3,C 29 H 22 N 2 O 11 Zn 2,M r=705.27,Z=4,D c=1.773 g/cm 3,F(000)=1432,μ=1.887 mm-1,R=0.0421 and wR=0.1049 for 2594 observed reflections (I > 2σ(I)).X-ray single-crystal diffraction analysis shows that 1 features two-dimensional [Zn 2 (bptc)(H 2 O)] layers,which are further linked by the bpe ligands to give rise to a three-dimensional pillar-layered structure.According to the topology analysis,this framework can be simplified into a (4,6)-connected (4 4 ·6 2)(4 4 ·6 10 ·8) network.
