A novel coordination polymer [Co3（tma）（pda）2（H2O）3]n·nH2O was synthesized by hydrothermal reaction of 3-（3-pyridyl）acrylate acid （pda） and trimesic acid （tma） with COCl2·6H2O. The structure was c...A novel coordination polymer [Co3（tma）（pda）2（H2O）3]n·nH2O was synthesized by hydrothermal reaction of 3-（3-pyridyl）acrylate acid （pda） and trimesic acid （tma） with COCl2·6H2O. The structure was characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction analysis. It crystallizes in triclinic, space group PT with a = 9.569（4）, b = 12.562（6）, c = 12.666（6） A, a = 97.321（7）, β = 110.295（7）, γ = 106.110（7）°, V = 1328.9（10）A^3, Dc = 1.877 g/cm^3, Mr = 751.24, Z = 2,μ = 1.930 mm^-1, F（000） = 758, the final R = 0.0392 and wR = 0.0837. The diffraction result shows that Co atoms are linked through pda and tma ligands to form an infinite three-dimensional network.展开更多
A unique metal-organic framework [Cd2（L）1.5（μ3-OH）（H2 O）2 ]·2H2 O（1, H2 L = 2,5-dibenzoylterephthalic acid） has been synthesized under hydrothermal conditions, and characterized by single-crystal X-ray d...A unique metal-organic framework [Cd2（L）1.5（μ3-OH）（H2 O）2 ]·2H2 O（1, H2 L = 2,5-dibenzoylterephthalic acid） has been synthesized under hydrothermal conditions, and characterized by single-crystal X-ray diffractions, elemental analyses, IR spectra and fluorescence spectrum. The compound is of triclinic system, space group P1, C33 H27 CdO14, Mr = 870.33, a = 12.2939（17）, b = 12.5135（9）, c = 13.2046（10）, α = 115.3190（10）, β = 96.9140（10）, γ = 109.7950（10）°, V = 1641.6（3）3, Z = 2, Dc = 1.761 g/cm3, F（000） = 862, μ（MoK） = 1.366 mm-1, Rint = 0.0148, R = 0.0240 and wR = 0.0639 for 5995 observed reflections with I 〉 2σ（I）. X-ray analysis shows that the title complex exhibits a 3D framework with（412·63） topology, in which the tetra-nuclear [Cd4（μ3-OH）2 ] clusters act as 6-connected nodes, and the L ligands can be simplified to be linear connectors. Moreover, the thermal stability and fluorescence have been studied in detail.展开更多
A new pseudo Keggin-type bicapped compound（Et3N）0.5（en）2[SiMo12O40（VO）2]·4H2O（Et3N=triethylamine,en=ethylenediamine） has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X...A new pseudo Keggin-type bicapped compound（Et3N）0.5（en）2[SiMo12O40（VO）2]·4H2O（Et3N=triethylamine,en=ethylenediamine） has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X-ray crystallography.The title compound crystallizes in monoclinic,space group P21/n with a=17.576（2）,b=13.535（1）,c=21.587（2）,β=103.790（10）°,V=4987.3（8）3,Z=4,Dc=2.925 Mg/m3,Mr=2196.12,F（000）=4148,μ=3.400 mm–1,R=0.0379 and wR=0.1219.The most remarkable structural feature of the compound is that the clusters represent bicapped pseudo-Keggin structure and are linked one by one through V-O-V bonds forming an infinite 1D chain. Furthermore, such chains are interconnected in a cross-like arrangement through multiform hydrogen bonds to yield a 3D supramolecular network.展开更多
THIS note first researches the geochemical characteristics of rare earth elements （REEs） and Sr and Ndisotopes of hydrothermal chimney in the middle Okinawa Trough. On this basis, the sources of mineralforming mater...THIS note first researches the geochemical characteristics of rare earth elements （REEs） and Sr and Ndisotopes of hydrothermal chimney in the middle Okinawa Trough. On this basis, the sources of mineralforming material and mechanisms of mineralization are discussed. 1 Analysis methods and results A hydrothermal chimney was obtained from theIsuzu depression in the middle Okinawa Trough andsamples for analysis were handpicked from chimney.Four samples belong to two types of ores, respectively,in which samples 360-1, 360-5 and 360-8 are of Cu-Znsulfide type and 159H is of barite-amorphous SiO<sub>2</sub>type. REEs were analyzed by TQ-TURBO II ICP-展开更多
文摘A novel coordination polymer [Co3（tma）（pda）2（H2O）3]n·nH2O was synthesized by hydrothermal reaction of 3-（3-pyridyl）acrylate acid （pda） and trimesic acid （tma） with COCl2·6H2O. The structure was characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction analysis. It crystallizes in triclinic, space group PT with a = 9.569（4）, b = 12.562（6）, c = 12.666（6） A, a = 97.321（7）, β = 110.295（7）, γ = 106.110（7）°, V = 1328.9（10）A^3, Dc = 1.877 g/cm^3, Mr = 751.24, Z = 2,μ = 1.930 mm^-1, F（000） = 758, the final R = 0.0392 and wR = 0.0837. The diffraction result shows that Co atoms are linked through pda and tma ligands to form an infinite three-dimensional network.
基金supported by the NNSFC(No.20871023)the Jilin Provincial Science Research Foundation of China(No.20101549)+1 种基金Xiaonei Foundation of Changchun University of TechnologyThe 12th Five-Year Plan for Science&Technology Research sponsored by Department of Education of Jilin Province(Nos.130 and 146,2013)
文摘A unique metal-organic framework [Cd2（L）1.5（μ3-OH）（H2 O）2 ]·2H2 O（1, H2 L = 2,5-dibenzoylterephthalic acid） has been synthesized under hydrothermal conditions, and characterized by single-crystal X-ray diffractions, elemental analyses, IR spectra and fluorescence spectrum. The compound is of triclinic system, space group P1, C33 H27 CdO14, Mr = 870.33, a = 12.2939（17）, b = 12.5135（9）, c = 13.2046（10）, α = 115.3190（10）, β = 96.9140（10）, γ = 109.7950（10）°, V = 1641.6（3）3, Z = 2, Dc = 1.761 g/cm3, F（000） = 862, μ（MoK） = 1.366 mm-1, Rint = 0.0148, R = 0.0240 and wR = 0.0639 for 5995 observed reflections with I 〉 2σ（I）. X-ray analysis shows that the title complex exhibits a 3D framework with（412·63） topology, in which the tetra-nuclear [Cd4（μ3-OH）2 ] clusters act as 6-connected nodes, and the L ligands can be simplified to be linear connectors. Moreover, the thermal stability and fluorescence have been studied in detail.
基金supported by the National Natural Science Foundation of China (No 20701012)the Key Project of Chinese Ministry of Education (No 207068)+1 种基金the Foundation of Henan Educational Committee of China (No 2007150003 and 2008B150002)the Foundation for University Youth Key Teacher of Henan Province
文摘A new pseudo Keggin-type bicapped compound（Et3N）0.5（en）2[SiMo12O40（VO）2]·4H2O（Et3N=triethylamine,en=ethylenediamine） has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X-ray crystallography.The title compound crystallizes in monoclinic,space group P21/n with a=17.576（2）,b=13.535（1）,c=21.587（2）,β=103.790（10）°,V=4987.3（8）3,Z=4,Dc=2.925 Mg/m3,Mr=2196.12,F（000）=4148,μ=3.400 mm–1,R=0.0379 and wR=0.1219.The most remarkable structural feature of the compound is that the clusters represent bicapped pseudo-Keggin structure and are linked one by one through V-O-V bonds forming an infinite 1D chain. Furthermore, such chains are interconnected in a cross-like arrangement through multiform hydrogen bonds to yield a 3D supramolecular network.
文摘THIS note first researches the geochemical characteristics of rare earth elements （REEs） and Sr and Ndisotopes of hydrothermal chimney in the middle Okinawa Trough. On this basis, the sources of mineralforming material and mechanisms of mineralization are discussed. 1 Analysis methods and results A hydrothermal chimney was obtained from theIsuzu depression in the middle Okinawa Trough andsamples for analysis were handpicked from chimney.Four samples belong to two types of ores, respectively,in which samples 360-1, 360-5 and 360-8 are of Cu-Znsulfide type and 159H is of barite-amorphous SiO<sub>2</sub>type. REEs were analyzed by TQ-TURBO II ICP-
