Three new complexes have been prepared based on the transition metals and zwitterionic dicarboxylate ligand 1,1＇-（1,4-phenylene-bis（methylene））-bis（pyridine-3-carboxylic acid） （L）, whose formulas are {[Cd4（...Three new complexes have been prepared based on the transition metals and zwitterionic dicarboxylate ligand 1,1＇-（1,4-phenylene-bis（methylene））-bis（pyridine-3-carboxylic acid） （L）, whose formulas are {[Cd4（L）（SO4）]· （C1）6}n （1）, [Zn（L）C12], （2）, and [Co（L）C12], （3）, respectively. Complexes 1-3 have been characterized by elemental analyses, IR spectroscopy, XRD, thermal analyses and single crystal X-ray （powder） diffraction. 1 crystallizes in monoclinic space group C2/m, displaying a 2-D layer structure with three unique Cd^2＋ centers. 2 and 3 are iso- morphic structures with the orthorhombic Cmca space group. They exhibit a 1-D zigzag chain, which can be linked to generate a 2-D layer via hydrogen bonding interactions （C--H＇＂O）. Moreover, electrochemical behavior reveals that the redox reaction of 3-CPE is a surface-controlled reaction. And the luminescent properties of the title comlexes have been investigated at room temperature.展开更多
Two new inorganic-organic hybrid materials containing different isopolymolybdate units, namely, [{Ce（pdca）（H20）} {Ce（pdca）（H20）5}]2{MosO26}o10H2O （1）, [Cu（phen）（HzO）2]2[Mo6O20] （2） （pdca=pyridine-2,6-...Two new inorganic-organic hybrid materials containing different isopolymolybdate units, namely, [{Ce（pdca）（H20）} {Ce（pdca）（H20）5}]2{MosO26}o10H2O （1）, [Cu（phen）（HzO）2]2[Mo6O20] （2） （pdca=pyridine-2,6- dicarboxylic acid, phen= 1,10-phenanthroline） have been successfully synthesized under hydrothermal conditions, and characterized by elemental analyses, IR spectra, thermal gravimetric analyses （TGA）, single-crystal X-ray diffraction and powder X-ray diffraction （PXRD）. In compound 1, Ce（III） ions are bridged by pdca ligands to form ce- rium-organic coordination layers, which are further pillared by octamolybdate clusters via the covalent bonding of Ce--O, leading to the formation of a 3D pillar-layered open-framework architecture. Compound 2 features a 3D supramolecular structure constructed by hydrogen bond interactions between 1D molybdate chains aggregated by [M06020]4- polyoxoanions and coordinated water molecules. It was remarkable that H3[PMol2040]·XH20 decomposes into hexamolybdate anions, which are linked together with phen ligands by Cu（II） cation. Moreover, UV-vis spectra and fluorescence properties of compounds 1- 2 have also been investigated in detail.展开更多
A series of sandwich-type tungstoarsenates heteropoly compounds with As/W ratio of 4/30, Na16[As4W30M4(H2O)2O112]·XH2O (M = Zn,Cu,Co,Ni,Mn and Cd), have been synthesized for the first time and structurally charac...A series of sandwich-type tungstoarsenates heteropoly compounds with As/W ratio of 4/30, Na16[As4W30M4(H2O)2O112]·XH2O (M = Zn,Cu,Co,Ni,Mn and Cd), have been synthesized for the first time and structurally characterized by elemental analysis, IR and 183W NMR spectra. The crystal structure of Na16[As4W30Cu4(H2O)2O112]·63H2O was determined to be a triclinic system, of P1 symmetry, a = 1.2721(3) nm, b = 2.451 6(5) nm, c = 2.6450(5) nm,展开更多
基金This work was financially supported by the Program for National Natural Science Foundation of China （Nos. 21271024 and 20971014）.
文摘Three new complexes have been prepared based on the transition metals and zwitterionic dicarboxylate ligand 1,1＇-（1,4-phenylene-bis（methylene））-bis（pyridine-3-carboxylic acid） （L）, whose formulas are {[Cd4（L）（SO4）]· （C1）6}n （1）, [Zn（L）C12], （2）, and [Co（L）C12], （3）, respectively. Complexes 1-3 have been characterized by elemental analyses, IR spectroscopy, XRD, thermal analyses and single crystal X-ray （powder） diffraction. 1 crystallizes in monoclinic space group C2/m, displaying a 2-D layer structure with three unique Cd^2＋ centers. 2 and 3 are iso- morphic structures with the orthorhombic Cmca space group. They exhibit a 1-D zigzag chain, which can be linked to generate a 2-D layer via hydrogen bonding interactions （C--H＇＂O）. Moreover, electrochemical behavior reveals that the redox reaction of 3-CPE is a surface-controlled reaction. And the luminescent properties of the title comlexes have been investigated at room temperature.
基金This work was financially supported by the Program for National Natural Science Foundation of China （Nos. 21271024 and 20971014） and Beijing Natural Science （No. 2112037）.
文摘Two new inorganic-organic hybrid materials containing different isopolymolybdate units, namely, [{Ce（pdca）（H20）} {Ce（pdca）（H20）5}]2{MosO26}o10H2O （1）, [Cu（phen）（HzO）2]2[Mo6O20] （2） （pdca=pyridine-2,6- dicarboxylic acid, phen= 1,10-phenanthroline） have been successfully synthesized under hydrothermal conditions, and characterized by elemental analyses, IR spectra, thermal gravimetric analyses （TGA）, single-crystal X-ray diffraction and powder X-ray diffraction （PXRD）. In compound 1, Ce（III） ions are bridged by pdca ligands to form ce- rium-organic coordination layers, which are further pillared by octamolybdate clusters via the covalent bonding of Ce--O, leading to the formation of a 3D pillar-layered open-framework architecture. Compound 2 features a 3D supramolecular structure constructed by hydrogen bond interactions between 1D molybdate chains aggregated by [M06020]4- polyoxoanions and coordinated water molecules. It was remarkable that H3[PMol2040]·XH20 decomposes into hexamolybdate anions, which are linked together with phen ligands by Cu（II） cation. Moreover, UV-vis spectra and fluorescence properties of compounds 1- 2 have also been investigated in detail.
文摘A series of sandwich-type tungstoarsenates heteropoly compounds with As/W ratio of 4/30, Na16[As4W30M4(H2O)2O112]·XH2O (M = Zn,Cu,Co,Ni,Mn and Cd), have been synthesized for the first time and structurally characterized by elemental analysis, IR and 183W NMR spectra. The crystal structure of Na16[As4W30Cu4(H2O)2O112]·63H2O was determined to be a triclinic system, of P1 symmetry, a = 1.2721(3) nm, b = 2.451 6(5) nm, c = 2.6450(5) nm,
