Two new supramolecular compounds, 2C10HgN2＋CsHF4O42-C8H2F4O4/（H2tfbdc） （tfbdc）＇（Hbipy）2 （1） and C4H6NEE＋.CsHF4O427（tfbdc）（H2pz） （2）, were synthesized and characterized by elemental analysis, IR spectr...Two new supramolecular compounds, 2C10HgN2＋CsHF4O42-C8H2F4O4/（H2tfbdc） （tfbdc）＇（Hbipy）2 （1） and C4H6NEE＋.CsHF4O427（tfbdc）（H2pz） （2）, were synthesized and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. Compound 1 crystallizes in the triclinic system, space group P1, with a = 8.3453（12）, b = 10.1798（15）, c = 10.6626（16） A, a = 87.591（2）, β = 74.047（2）, ）, = 69.006（2）, V= 834.53（12） A3, Dc = 1.614 g/cm3, F（000） = 400, u = 1.45 cm^-1, Z= 2, the final R = 0.0353 and wR = 0.1005 for 5882 observed reflections withI〉 2σ（I）; and compound 2 crystallizes in the monoclinic system, space group P21/c, with a = 10.471（4）, b = 5.4419（19）, c = 12.249（4） A,β = 114.909（6）°, V= 633（4） A3, Dc = 1.669 g/cm3, F（000） = 320, u = 1.63 cm-1, Z = 2, the final R = 0.0794 and wR = 0.2923 for 3213 observed reflections with I〉 2σ（I）. Both compounds 1 and 2 crystallize as charge-transfer organic salts with the dianionic or neutral acid components lying at the inversion centers. Hbipy＋ cations and anionic acid in compound I are linked to form a chain by means of C-H..-O hydrogen bonds. Adjacent chains are further extended into a two-dimensional layer network via N-H.O and O-H-N hydrogen bonds. In compound 2, the acid and base subunits are arranged alternately to generate a linear tape motif via N-H...O hydrogen bonds; these tapes are further combihed into a three-dimensional array with CdSO4 topology via C-H...O intermolecular hydrogen bonds.展开更多
The title complexes [M（ImH）4（tfbdc）（H2O）] （1： M = Co; 2： M = Ni） （ImH = imidazole, tfbdc = 2,3,5,6-tetrafluoroterephthalate） were synthesized by the reaction of M（OAc）2·4H2O, H2ffbdc and ImH in wate...The title complexes [M（ImH）4（tfbdc）（H2O）] （1： M = Co; 2： M = Ni） （ImH = imidazole, tfbdc = 2,3,5,6-tetrafluoroterephthalate） were synthesized by the reaction of M（OAc）2·4H2O, H2ffbdc and ImH in water solution. The complexes were characterized by elemental analysis, IR spectra, thermogravimetric analysis, cyclic voltammetry and X-ray single crystal structure analysis. Structural analysis reveals that 1 and 2 possess isostructure： monoclinic, P2 1/c, Z=4. M（II） ion in complexes 1 and 2 has a distorted octahedral geometry coordinated by one oxygen atom from water, one oxygen atom from tfbdc2- and four nitrogen atoms from ImHs. They are discrete zero-dimensional molecular complexes. And the adjacent monomeric components are connected by hydrogen bonds to form a supramolecule. Electrochemical properties of the complexes 1 and 2 show that electron transfer of M（II） between M（III） in electrolysis is a quasi-reversible process.展开更多
基金supported by the National Natural Science Foundation of China (Nos.20671045 and 20971060)Natural Science Foundation of Nanjing University,State Key Laboratory of Coordination Chemistry
文摘Two new supramolecular compounds, 2C10HgN2＋CsHF4O42-C8H2F4O4/（H2tfbdc） （tfbdc）＇（Hbipy）2 （1） and C4H6NEE＋.CsHF4O427（tfbdc）（H2pz） （2）, were synthesized and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. Compound 1 crystallizes in the triclinic system, space group P1, with a = 8.3453（12）, b = 10.1798（15）, c = 10.6626（16） A, a = 87.591（2）, β = 74.047（2）, ）, = 69.006（2）, V= 834.53（12） A3, Dc = 1.614 g/cm3, F（000） = 400, u = 1.45 cm^-1, Z= 2, the final R = 0.0353 and wR = 0.1005 for 5882 observed reflections withI〉 2σ（I）; and compound 2 crystallizes in the monoclinic system, space group P21/c, with a = 10.471（4）, b = 5.4419（19）, c = 12.249（4） A,β = 114.909（6）°, V= 633（4） A3, Dc = 1.669 g/cm3, F（000） = 320, u = 1.63 cm-1, Z = 2, the final R = 0.0794 and wR = 0.2923 for 3213 observed reflections with I〉 2σ（I）. Both compounds 1 and 2 crystallize as charge-transfer organic salts with the dianionic or neutral acid components lying at the inversion centers. Hbipy＋ cations and anionic acid in compound I are linked to form a chain by means of C-H..-O hydrogen bonds. Adjacent chains are further extended into a two-dimensional layer network via N-H.O and O-H-N hydrogen bonds. In compound 2, the acid and base subunits are arranged alternately to generate a linear tape motif via N-H...O hydrogen bonds; these tapes are further combihed into a three-dimensional array with CdSO4 topology via C-H...O intermolecular hydrogen bonds.
基金Acknowledgement This work was supported by the National Natural Science Foundation of China （Nos. 20671045, 20971060, 21101018） and the Natural Science Foundation of State Key Laboratory of Coordination Chemistry.
文摘The title complexes [M（ImH）4（tfbdc）（H2O）] （1： M = Co; 2： M = Ni） （ImH = imidazole, tfbdc = 2,3,5,6-tetrafluoroterephthalate） were synthesized by the reaction of M（OAc）2·4H2O, H2ffbdc and ImH in water solution. The complexes were characterized by elemental analysis, IR spectra, thermogravimetric analysis, cyclic voltammetry and X-ray single crystal structure analysis. Structural analysis reveals that 1 and 2 possess isostructure： monoclinic, P2 1/c, Z=4. M（II） ion in complexes 1 and 2 has a distorted octahedral geometry coordinated by one oxygen atom from water, one oxygen atom from tfbdc2- and four nitrogen atoms from ImHs. They are discrete zero-dimensional molecular complexes. And the adjacent monomeric components are connected by hydrogen bonds to form a supramolecule. Electrochemical properties of the complexes 1 and 2 show that electron transfer of M（II） between M（III） in electrolysis is a quasi-reversible process.
