Sodium holmium polyphosphate crystal, NaHo（PO3）4, has been synthesized by the high temperature solution reaction and characterized by X-ray diffraction analysis, EDX, IR, UV-vis-NIR, and PL spectra. The structure be...Sodium holmium polyphosphate crystal, NaHo（PO3）4, has been synthesized by the high temperature solution reaction and characterized by X-ray diffraction analysis, EDX, IR, UV-vis-NIR, and PL spectra. The structure belongs to the monoclinic system, space group P21/n with Z = 4, α = 7.181（3）, b = 13.059（5） and c = 9.730 （4） ？. It is described as a three-dimensional （3D） architecture made up of [P4O12]4- anionic spiral chains and HoO8 polyhedra by corner-sharing. The 8-coordinated sodium atoms are located in infinite tunnels. The results of EDX and IR spectrum are in good agreement with the crystallographic analysis. In addition, NaHo（PO3）4 exhibits visible light emission in the solid state at room temperature.展开更多
Two new coordination polymers(CPs) based on two new tetrazole-based ligands, namely, [Cu(TPP)]n(HTTP = 4-(3-(2 H-tetrazol-5-yl)phenyl)pyridine, 1) and {[Cd_2(TBCA)_2(H_2O)_2]·-H_2O}n(H_2TBCA = 3?-(2 H-tetrazol-5-...Two new coordination polymers(CPs) based on two new tetrazole-based ligands, namely, [Cu(TPP)]n(HTTP = 4-(3-(2 H-tetrazol-5-yl)phenyl)pyridine, 1) and {[Cd_2(TBCA)_2(H_2O)_2]·-H_2O}n(H_2TBCA = 3?-(2 H-tetrazol-5-yl)biphenyl-4-carboxylic acid, 2), were synthesized via solvothermal reactions. Single-crystal X-ray diffraction analysis reveals that compound 1 exhibits a(3,6)-connected rtl network topology based on binuclear secondary building units(SBUs). Compound 2 presents a 2D framework composed of 1D SUBs formed by both carboxyl and tetrazole groups. The 2D network is linked into a 3D framework via various hydrogen bonds. They represent two examples of CPs construct from rigid 5-substitued tetrazole-based ligands with relatively longer spacer. The thermal stabilities and luminescent properties of compounds 1 and 2 were also explored.展开更多
TbCu（TeO3）2Cl was obtained in high yield from high temperature solid-state reacion of Tb407, CuO, CuCl2 and TeO2 in a 1：2：2：8 molar ratio at 710 ℃ in an evacuated quartz tube. Its structure was established by si...TbCu（TeO3）2Cl was obtained in high yield from high temperature solid-state reacion of Tb407, CuO, CuCl2 and TeO2 in a 1：2：2：8 molar ratio at 710 ℃ in an evacuated quartz tube. Its structure was established by single-crystal X-ray diffraction. The title compound crystallizes in monoclinic, space group P21/c, with a = 5.409（2）, b = 14.994（6）, c = 9.183（4）A, β = 98.884（5）°, V = 735.8（5） A^3 and Z = 4. TbCu（TeO3）2Cl is isostructural with LnCu（TeO3）2X （Ln = Dy, X= Cl; Ln = Er, X = Cl, Br）. Its structure features a three-dimensional （3D） network built from Tb（Ⅲ） and Cu（Ⅱ） ions interconnected by tellurite and chloride anions; the chloride anion and the lone-pair electrons of the tellurium（Ⅳ） ions are oriented toward the cavities of the tunnels in the network. Solid-state luminescent spectrum of TbCu（TeO3）2Cl shows a strong emission band at 545 nm with a luminescent life time of 291 μs.展开更多
基金Supported by the Natural Science Foundation of Yunnan Province(No.2012FB122)the Education Science Foundation of Yunnan Province(No.2013Z050)+3 种基金the Science Foundation of State Key Laboratory of Structural Chemistry(No.20140012)Training program for young academic and technical leader in Yunnan ProvinceTraining program for young teacher in Yunnan UniversityProgram for Innovative Research Team(in Science and Technology)in University of Yunnan Province
文摘Sodium holmium polyphosphate crystal, NaHo（PO3）4, has been synthesized by the high temperature solution reaction and characterized by X-ray diffraction analysis, EDX, IR, UV-vis-NIR, and PL spectra. The structure belongs to the monoclinic system, space group P21/n with Z = 4, α = 7.181（3）, b = 13.059（5） and c = 9.730 （4） ？. It is described as a three-dimensional （3D） architecture made up of [P4O12]4- anionic spiral chains and HoO8 polyhedra by corner-sharing. The 8-coordinated sodium atoms are located in infinite tunnels. The results of EDX and IR spectrum are in good agreement with the crystallographic analysis. In addition, NaHo（PO3）4 exhibits visible light emission in the solid state at room temperature.
基金financially supported by the National Natural Science Foundation of China(No.21473062)Guizhou Z [(2015)4002]Guizhou GNYL[(2017)008] of Guizhou Province,China
文摘Two new coordination polymers(CPs) based on two new tetrazole-based ligands, namely, [Cu(TPP)]n(HTTP = 4-(3-(2 H-tetrazol-5-yl)phenyl)pyridine, 1) and {[Cd_2(TBCA)_2(H_2O)_2]·-H_2O}n(H_2TBCA = 3?-(2 H-tetrazol-5-yl)biphenyl-4-carboxylic acid, 2), were synthesized via solvothermal reactions. Single-crystal X-ray diffraction analysis reveals that compound 1 exhibits a(3,6)-connected rtl network topology based on binuclear secondary building units(SBUs). Compound 2 presents a 2D framework composed of 1D SUBs formed by both carboxyl and tetrazole groups. The 2D network is linked into a 3D framework via various hydrogen bonds. They represent two examples of CPs construct from rigid 5-substitued tetrazole-based ligands with relatively longer spacer. The thermal stabilities and luminescent properties of compounds 1 and 2 were also explored.
基金the National Natural Science Foundation of China (No. 20573113)
文摘TbCu（TeO3）2Cl was obtained in high yield from high temperature solid-state reacion of Tb407, CuO, CuCl2 and TeO2 in a 1：2：2：8 molar ratio at 710 ℃ in an evacuated quartz tube. Its structure was established by single-crystal X-ray diffraction. The title compound crystallizes in monoclinic, space group P21/c, with a = 5.409（2）, b = 14.994（6）, c = 9.183（4）A, β = 98.884（5）°, V = 735.8（5） A^3 and Z = 4. TbCu（TeO3）2Cl is isostructural with LnCu（TeO3）2X （Ln = Dy, X= Cl; Ln = Er, X = Cl, Br）. Its structure features a three-dimensional （3D） network built from Tb（Ⅲ） and Cu（Ⅱ） ions interconnected by tellurite and chloride anions; the chloride anion and the lone-pair electrons of the tellurium（Ⅳ） ions are oriented toward the cavities of the tunnels in the network. Solid-state luminescent spectrum of TbCu（TeO3）2Cl shows a strong emission band at 545 nm with a luminescent life time of 291 μs.
