Biphenyl compounds have potential applications in coordination chemistry, bioinorganic chemistry, materials and medicine. A new biphenyl compound（biphenyl-2,2′-dicarboxylic acid-2-methyl ester） was synthesized by r...Biphenyl compounds have potential applications in coordination chemistry, bioinorganic chemistry, materials and medicine. A new biphenyl compound（biphenyl-2,2′-dicarboxylic acid-2-methyl ester） was synthesized by refluxing biphenyl-2,2′-dicarboxylic acid with Ln（ClO4）3·6H2O in the mixed-solvent of methanol and water for 5 h. The crystals were characterized by X-ray single crystal diffraction, elemental analysis, IR, and 1H NMR. It belongs to monoclinic system with space group P21/n and cell parameters a=1.237 7（5） nm, b=0.808 2（3） nm, c=1.404 8（6） nm, β=114.410（6）° and Z=2. The strong intermolecular hydrogen bonds observed leads to a centrosymmetric dimmer. The oxygen atoms of carboxylic groups in the title compound have strong coordination abilities. It can perhaps be employed to aggregate with transitional metal atoms or lanthanide atoms and generate new complexes, which may have potential applications in many fields. To the best of our knowledge, the synthesis, structure and characterization of biphenyl-2,2′-dicarboxylic acid-2-methyl ester were first reported.展开更多
A new porous Cd（Ⅱ） coordination compound, namely, [Cd（bpdc）（L）2]·3H2O（1, L = 11-fluoro-dipyrido[3,2-a：2,3-c]phenazine and bpdc = 1,1-biphenyl-2,2-dicarboxylate） was synthesized under hydrothermal condit...A new porous Cd（Ⅱ） coordination compound, namely, [Cd（bpdc）（L）2]·3H2O（1, L = 11-fluoro-dipyrido[3,2-a：2,3-c]phenazine and bpdc = 1,1-biphenyl-2,2-dicarboxylate） was synthesized under hydrothermal conditions, and characterized by single-crystal X-ray diffraction. It crystallizes in tetragonal, space group P4122 with a = 9.8486（4）, b = 9.8486（4）, c = 45.925（4）A, V = 4454.5（5） 3, Z = 4, C50H29 Cd F2N8O7, Mr = 1004.21, Dc = 1.497 g/cm^3, F（000） = 2028, μ（Mo Ka） = 0.562 mm^-1, R = 0.0566 and w R = 0.1585. Each Cd（Ⅱ） atom is coordinated by one bpdc anion and two L ligands to give a discrete molecule. Neighboring discrete molecules are stacked by π-π interactions among L ligands, resulting in an interesting 1D supramolecular chain. Moreover, the 1D supramolecular chains are packed with each other to give a porous structure, in which an infinite channel is filled with water molecules. In addition, the thermal behavior and luminescent property of 1 have also been studied.展开更多
文摘Biphenyl compounds have potential applications in coordination chemistry, bioinorganic chemistry, materials and medicine. A new biphenyl compound（biphenyl-2,2′-dicarboxylic acid-2-methyl ester） was synthesized by refluxing biphenyl-2,2′-dicarboxylic acid with Ln（ClO4）3·6H2O in the mixed-solvent of methanol and water for 5 h. The crystals were characterized by X-ray single crystal diffraction, elemental analysis, IR, and 1H NMR. It belongs to monoclinic system with space group P21/n and cell parameters a=1.237 7（5） nm, b=0.808 2（3） nm, c=1.404 8（6） nm, β=114.410（6）° and Z=2. The strong intermolecular hydrogen bonds observed leads to a centrosymmetric dimmer. The oxygen atoms of carboxylic groups in the title compound have strong coordination abilities. It can perhaps be employed to aggregate with transitional metal atoms or lanthanide atoms and generate new complexes, which may have potential applications in many fields. To the best of our knowledge, the synthesis, structure and characterization of biphenyl-2,2′-dicarboxylic acid-2-methyl ester were first reported.
基金Supported by the Science and Technology Research Projects of the Education Committee of Jilin Province(No.2013206)
文摘A new porous Cd（Ⅱ） coordination compound, namely, [Cd（bpdc）（L）2]·3H2O（1, L = 11-fluoro-dipyrido[3,2-a：2,3-c]phenazine and bpdc = 1,1-biphenyl-2,2-dicarboxylate） was synthesized under hydrothermal conditions, and characterized by single-crystal X-ray diffraction. It crystallizes in tetragonal, space group P4122 with a = 9.8486（4）, b = 9.8486（4）, c = 45.925（4）A, V = 4454.5（5） 3, Z = 4, C50H29 Cd F2N8O7, Mr = 1004.21, Dc = 1.497 g/cm^3, F（000） = 2028, μ（Mo Ka） = 0.562 mm^-1, R = 0.0566 and w R = 0.1585. Each Cd（Ⅱ） atom is coordinated by one bpdc anion and two L ligands to give a discrete molecule. Neighboring discrete molecules are stacked by π-π interactions among L ligands, resulting in an interesting 1D supramolecular chain. Moreover, the 1D supramolecular chains are packed with each other to give a porous structure, in which an infinite channel is filled with water molecules. In addition, the thermal behavior and luminescent property of 1 have also been studied.
