One novel metal-organic framework(MOF), [Ba(L)(HO)](1, HL =aniline-2,5-disulfonic acid), has been synthesized by hydrothermal method. Each barium atom is eleven-coordinated into a distorted monocapped pentagonal antip...One novel metal-organic framework(MOF), [Ba(L)(HO)](1, HL =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)(HO)]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 COover Nat 273 K.展开更多
The hydrothermal reaction of ZnO with benzene 1,4 dicarboxylic acid gave Zn·BDC·2H 2O (1) and Zn·BDC·H 2O (2) (BDC=benzene 1,4 dicarboxylate), respectively. Polymer 1 (C 4H 4O 3Zn 0...The hydrothermal reaction of ZnO with benzene 1,4 dicarboxylic acid gave Zn·BDC·2H 2O (1) and Zn·BDC·H 2O (2) (BDC=benzene 1,4 dicarboxylate), respectively. Polymer 1 (C 4H 4O 3Zn 0.5 ) shows a one dimensional zigzag chain structure built up from the alternate connection of tetrahedral ZnO 4 and BDC units. Polymer 2 (C 4H 3O 2 5 Zn 0 5 ) possesses a three dimensional framework containing infinite zigzag Zn···Zn···Zn pseudochains generated by five coordinate zinc centers and a rectangular channel system including three groups of different straight channels along the [001], [010] and [60 1] directions. The two metal organic polymeric compounds exhibit strong photoluminescent emission bands at 402 nm ( λ ex =260 nm) (for 1) and at 344 nm and 385 nm ( λ ex =279 nm) (for 2) in the solid state at room temperature.展开更多
A new three-dimensional 3d-4d heterometallic coordination polymer,[Cd2Mn（H2O）4（BTC）2]·2H2O（BTC=1,3,5-benzenetricarboxylate） was prepared under hydrothermal conditions and characterized by single crystal X-r...A new three-dimensional 3d-4d heterometallic coordination polymer,[Cd2Mn（H2O）4（BTC）2]·2H2O（BTC=1,3,5-benzenetricarboxylate） was prepared under hydrothermal conditions and characterized by single crystal X-ray diffraction.This compound crystallized in the monoclinic space group C2/c,with cell parameters a=1.9452（4） nm,b=0.7094（2） nm,c=1.8064（4） nm,β=118.02（3）°,V=2.2004（8） nm3 and Z=4.Its structure contains trinuclear mixed metal clusters,which are further connected by BTC to form a three-dimensional framework.The compound exhibits intense photoluminescence at room temperature.Magnetic studies of the compound show a dominant antiferromagnetic exchange between the Mn（Ⅱ） ions.展开更多
Two novel transition metal phosphonate compounds, [Co（H2BDPP）（phen）]n 1 （BDPP = p-O3PCH2（C6H4）CH2PO3, phen = 1,10-phenanthroline） and [Pb3（BCP）2]n 2 （BCP = OOC（C6H4）CH2PO3）, have been synthesized and str...Two novel transition metal phosphonate compounds, [Co（H2BDPP）（phen）]n 1 （BDPP = p-O3PCH2（C6H4）CH2PO3, phen = 1,10-phenanthroline） and [Pb3（BCP）2]n 2 （BCP = OOC（C6H4）CH2PO3）, have been synthesized and structurally determined by X-ray single-crystal diffraction. Compound 1 crystallizes in the monoclinic system, space group C2/c with a = 21.169（4）, b = 12.001（2）, c = 7.6211（15）A, β = 98.03（3）°, V= 1917.2（6）A^3, C20H18N2O6P2Co, Mr = 505.22, Z = 8, De= 1.737 g/cm^3, p = 1.107 mm^-1, F（000） = 1020, the final R= 0.0450 and wR = 0.1306 for 2072 observed reflections （I 〉 2σ（I）. Compound 2 crystallizes in the monoclinic system, space group C2/c with a = 4.7167（9）, b = 18.753（2）, c = 22.781（3）A, β = 91.07（3）°, V= 2014.7（14）A^, C8H6O5PPb1.5, Mr = 523.88, Z = 8, Dc = 3.454 g/cm^3, p = 25.222 mm^-1, F（000） = 1856, the final R = 0.0441 and wR = 0.1906 for 2259 observed reflections （I 〉 2σ（I）. In compound 1, the 1D chain running along the c axis is bridged by four ligands （trans- HO3PCH2C6H4CH2PO3H） in four different directions to extend the structure into a three- dimensional network. In compound 2, the Pb（II） displays 4- and 5-coordination modes. There is a one-dimensional P-O-Pb band along the a axis formed by PO3 groups and Pb（II） cations. These bands are joined by μ2-O of -COO to yield two-dimensional inorganic P-O-Pb layers which are pillared by the OOCC6HaCH2PO3 ligands to form a three-dimensional network. Moreover, compound 2 displays a strong emission band attributed to the ligand-centered （LC） transition.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)(HO)](1, HL =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)(HO)]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 COover Nat 273 K.
基金ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 0 12 80 0 1)
文摘The hydrothermal reaction of ZnO with benzene 1,4 dicarboxylic acid gave Zn·BDC·2H 2O (1) and Zn·BDC·H 2O (2) (BDC=benzene 1,4 dicarboxylate), respectively. Polymer 1 (C 4H 4O 3Zn 0.5 ) shows a one dimensional zigzag chain structure built up from the alternate connection of tetrahedral ZnO 4 and BDC units. Polymer 2 (C 4H 3O 2 5 Zn 0 5 ) possesses a three dimensional framework containing infinite zigzag Zn···Zn···Zn pseudochains generated by five coordinate zinc centers and a rectangular channel system including three groups of different straight channels along the [001], [010] and [60 1] directions. The two metal organic polymeric compounds exhibit strong photoluminescent emission bands at 402 nm ( λ ex =260 nm) (for 1) and at 344 nm and 385 nm ( λ ex =279 nm) (for 2) in the solid state at room temperature.
基金Supported by the Natural Science Foundation of Qingdao University of Science and Technology, China(No.0022311)
文摘A new three-dimensional 3d-4d heterometallic coordination polymer,[Cd2Mn（H2O）4（BTC）2]·2H2O（BTC=1,3,5-benzenetricarboxylate） was prepared under hydrothermal conditions and characterized by single crystal X-ray diffraction.This compound crystallized in the monoclinic space group C2/c,with cell parameters a=1.9452（4） nm,b=0.7094（2） nm,c=1.8064（4） nm,β=118.02（3）°,V=2.2004（8） nm3 and Z=4.Its structure contains trinuclear mixed metal clusters,which are further connected by BTC to form a three-dimensional framework.The compound exhibits intense photoluminescence at room temperature.Magnetic studies of the compound show a dominant antiferromagnetic exchange between the Mn（Ⅱ） ions.
基金Project supported by the National Natural Science Foundation of China （Nos. 20361002, 30460153）, the Teaching and Research Award Program for 0utstanding Young Teachers in Higher Education Institutions and the Program for New Century Excellent Talents in University of the Ministry of Education of China （No. NCET-04-836）.
基金supported by the State Key Laboratory of Structural Chemistry, National Natural Science Foundation of China (20873021)the Young Talent Programmed of Fujian Province (No. 2006F3072)
文摘Two novel transition metal phosphonate compounds, [Co（H2BDPP）（phen）]n 1 （BDPP = p-O3PCH2（C6H4）CH2PO3, phen = 1,10-phenanthroline） and [Pb3（BCP）2]n 2 （BCP = OOC（C6H4）CH2PO3）, have been synthesized and structurally determined by X-ray single-crystal diffraction. Compound 1 crystallizes in the monoclinic system, space group C2/c with a = 21.169（4）, b = 12.001（2）, c = 7.6211（15）A, β = 98.03（3）°, V= 1917.2（6）A^3, C20H18N2O6P2Co, Mr = 505.22, Z = 8, De= 1.737 g/cm^3, p = 1.107 mm^-1, F（000） = 1020, the final R= 0.0450 and wR = 0.1306 for 2072 observed reflections （I 〉 2σ（I）. Compound 2 crystallizes in the monoclinic system, space group C2/c with a = 4.7167（9）, b = 18.753（2）, c = 22.781（3）A, β = 91.07（3）°, V= 2014.7（14）A^, C8H6O5PPb1.5, Mr = 523.88, Z = 8, Dc = 3.454 g/cm^3, p = 25.222 mm^-1, F（000） = 1856, the final R = 0.0441 and wR = 0.1906 for 2259 observed reflections （I 〉 2σ（I）. In compound 1, the 1D chain running along the c axis is bridged by four ligands （trans- HO3PCH2C6H4CH2PO3H） in four different directions to extend the structure into a three- dimensional network. In compound 2, the Pb（II） displays 4- and 5-coordination modes. There is a one-dimensional P-O-Pb band along the a axis formed by PO3 groups and Pb（II） cations. These bands are joined by μ2-O of -COO to yield two-dimensional inorganic P-O-Pb layers which are pillared by the OOCC6HaCH2PO3 ligands to form a three-dimensional network. Moreover, compound 2 displays a strong emission band attributed to the ligand-centered （LC） transition.
文摘采用水热合成法合成了2种金属有机配合物{[Zn(tdc)(m-bix)]H2O}n(1)和{[Co5(btx)2(NDC)4(μ3-OH)2(H2O)2]}n(2)(H2tdc=2,5-噻吩二羧酸,m-bix=1,3-二咪唑基亚甲基苯),btx=对二(三氮唑甲基苯),H2NDC=1,4-萘二甲酸,通过X射线单晶衍射、元素分析、X射线粉末衍射和红外光谱对配合物的结构进行表征.结果表明配合物1是四连接的二维层状结构,拓扑符号为{4^4·6^2},借助于氢键作用力,该配合物拓展成三维超分子网状结构;而配合物2则以五核[Co5(μ3-OH)2(COO)8]作为次级结构单元,呈现出拓扑符号为{3^6·4^34·5^3·6^2}的罕见的十连接三维结构.此外,光致发光研究表明,配合物1在565 nm和605 nm处有发射峰,可作为一种潜在的荧光材料.磁学研究则表明配合物2存在弱的反铁磁相互作用,线性拟合得到该配合物的居里外斯温度Tθ=-3.3 K.
