Using symmetrical rigid organic ligand 4,4'-dipyridy(4,4'-bipy),two new Anderson-based supramolecular compounds,namely,[H_(2)(4,4'-bipy)]_(3)·(TeMo_(6)O_(24))·(H_(2)Mo_(6)O_(19))(1)and{Cu_(2)[H(4...Using symmetrical rigid organic ligand 4,4'-dipyridy(4,4'-bipy),two new Anderson-based supramolecular compounds,namely,[H_(2)(4,4'-bipy)]_(3)·(TeMo_(6)O_(24))·(H_(2)Mo_(6)O_(19))(1)and{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)(TeMo_(6)O_(24))}·4H_(2)O(2),were synthesized in one-pot under hydrothermal conditions.The compounds 1 and 2 have been tested by IR spectra,elemental analyses and single-crystal X-ray diffraction.Compound 1 contains one discrete Anderson anion,one Lindqvist anion and three 4,4'-bipy organic ligands.The anions and 4,4'-bipy alternate with each other by hydrogen bonding,building a supramolecular 1D chain.Adjacent 1D chains are interlinked through hydrogen bonding interactions to further connect a supramolecular 2D layer.Compounds containing both Anderson and Lindqvist polyanions are not common in the crystal structure of POMs.Compound 2 contains one Anderson anion and two metal-organic subunits{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)}^(6+)as modifiers.The Anderson anions and{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)}^(6+)subunits are organized into alternating through hydrogen bonding interactions to construct a supramolecular 1D chain.Additionally,the electrochemical properties of compounds 1 and 2 as well as photocatalytic properties are investigated.Results show that compounds 1 and 2 have photocatalytic activity,which can photocatalyze the degradation of organic dyes MB and AF.Also,compounds 1 and 2 have good electrochemical properties for amperometric detection of NO2-and Cr(Ⅵ).Furthermore,Compound 2 can be used as materials of supercapacitor.展开更多
Four coordination polymers based on two bis-pyridyl-bis-amide ligands and three aromatic dicarboxylates with different substituent groups, namely, [Co（3-bpcb）x.5（NPH）（H20）]＂ 4H20 （1）, [Co（3-bpcb）（NIPH）] ...Four coordination polymers based on two bis-pyridyl-bis-amide ligands and three aromatic dicarboxylates with different substituent groups, namely, [Co（3-bpcb）x.5（NPH）（H20）]＂ 4H20 （1）, [Co（3-bpcb）（NIPH）] （2）, [Co（3-bpcb）0.5（5-H2AIP）]＂ 2H20 （3）, [Co（3-bpcd）0.5（5-H2AIP）（H20）]＂ 2H20 （4） [3-bpcb = N,N＇-bis（3-pyridinecarboxamide）-l,4-benzene, 3-bpcd = N,N＇-bis（3- pyridine）cyclohexane-l,4-dicarboxamide, H2NPH = 3-nitrophthalic acid, H2NIPH = 5-nitroisophthalic acid, 5-HaAIP = 5-aminoisophthalic acid] have been synthetized under hydrothermal conditions. Complex 1 displays a one dimensional （1D） chain based on the binuclear [Co2（NPH）2] units and 3-bpeb ligands, which is extended into a three dimensional （3D） supra- molecular framework through hydrogen bonding and n-n stacking interactions. In complex 2, the （3,5）-connected two dimen- sional （2D） layers are constructed from 1D Co-NIPH chains and bidentate-bridging 3-bpeb ligands. Complex 3 is a 2D double layer based on Co-5-H2AIP 2D layers and 3-bpeb pillars. Complex 4 also displays a 2D network, which is constructed from the Co-5-H2AIP 1D double chains and 3-bpcd ligands. Finally, complexes 2--4 are extended into 3D supramolecular frame- works by hydrogen bonding or n-re stacking interactions. The substituent groups of dicarboxylates play an important role in the assembly and structures of the title complexes. In addition, the fluorescent properties of complexes 1-4 and the electrochemi- cal behaviors of 3 and 4 at room temperature have been investigated.展开更多
基金supported by the National Natural Science Foundation of China(21571023)
文摘Using symmetrical rigid organic ligand 4,4'-dipyridy(4,4'-bipy),two new Anderson-based supramolecular compounds,namely,[H_(2)(4,4'-bipy)]_(3)·(TeMo_(6)O_(24))·(H_(2)Mo_(6)O_(19))(1)and{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)(TeMo_(6)O_(24))}·4H_(2)O(2),were synthesized in one-pot under hydrothermal conditions.The compounds 1 and 2 have been tested by IR spectra,elemental analyses and single-crystal X-ray diffraction.Compound 1 contains one discrete Anderson anion,one Lindqvist anion and three 4,4'-bipy organic ligands.The anions and 4,4'-bipy alternate with each other by hydrogen bonding,building a supramolecular 1D chain.Adjacent 1D chains are interlinked through hydrogen bonding interactions to further connect a supramolecular 2D layer.Compounds containing both Anderson and Lindqvist polyanions are not common in the crystal structure of POMs.Compound 2 contains one Anderson anion and two metal-organic subunits{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)}^(6+)as modifiers.The Anderson anions and{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)}^(6+)subunits are organized into alternating through hydrogen bonding interactions to construct a supramolecular 1D chain.Additionally,the electrochemical properties of compounds 1 and 2 as well as photocatalytic properties are investigated.Results show that compounds 1 and 2 have photocatalytic activity,which can photocatalyze the degradation of organic dyes MB and AF.Also,compounds 1 and 2 have good electrochemical properties for amperometric detection of NO2-and Cr(Ⅵ).Furthermore,Compound 2 can be used as materials of supercapacitor.
基金supported by the Program for New Century Excellent Talents in University (NCET-09-0853)the National Natural Science Foundation of China (20871022, 21171025)the Natural Science Foundation of Liaoning Province (201102003)
文摘Four coordination polymers based on two bis-pyridyl-bis-amide ligands and three aromatic dicarboxylates with different substituent groups, namely, [Co（3-bpcb）x.5（NPH）（H20）]＂ 4H20 （1）, [Co（3-bpcb）（NIPH）] （2）, [Co（3-bpcb）0.5（5-H2AIP）]＂ 2H20 （3）, [Co（3-bpcd）0.5（5-H2AIP）（H20）]＂ 2H20 （4） [3-bpcb = N,N＇-bis（3-pyridinecarboxamide）-l,4-benzene, 3-bpcd = N,N＇-bis（3- pyridine）cyclohexane-l,4-dicarboxamide, H2NPH = 3-nitrophthalic acid, H2NIPH = 5-nitroisophthalic acid, 5-HaAIP = 5-aminoisophthalic acid] have been synthetized under hydrothermal conditions. Complex 1 displays a one dimensional （1D） chain based on the binuclear [Co2（NPH）2] units and 3-bpeb ligands, which is extended into a three dimensional （3D） supra- molecular framework through hydrogen bonding and n-n stacking interactions. In complex 2, the （3,5）-connected two dimen- sional （2D） layers are constructed from 1D Co-NIPH chains and bidentate-bridging 3-bpeb ligands. Complex 3 is a 2D double layer based on Co-5-H2AIP 2D layers and 3-bpeb pillars. Complex 4 also displays a 2D network, which is constructed from the Co-5-H2AIP 1D double chains and 3-bpcd ligands. Finally, complexes 2--4 are extended into 3D supramolecular frame- works by hydrogen bonding or n-re stacking interactions. The substituent groups of dicarboxylates play an important role in the assembly and structures of the title complexes. In addition, the fluorescent properties of complexes 1-4 and the electrochemi- cal behaviors of 3 and 4 at room temperature have been investigated.
