Self-assembly reaction of 1,2,4,5-benzenetetracarboxylic acid（H4 btc） with CuCl2 in mixed N,N-dimethylformamide（DMF）, methanol and aqueous solution at room temperature generated a 2D complex, [Cu（btc）0.5（DMF）...Self-assembly reaction of 1,2,4,5-benzenetetracarboxylic acid（H4 btc） with CuCl2 in mixed N,N-dimethylformamide（DMF）, methanol and aqueous solution at room temperature generated a 2D complex, [Cu（btc）0.5（DMF）（H2 O）]n（1） which was further characterized by X-ray diffraction, IR spectrum, elemental analysis and TG-DTA experiments. The structure determination reveals that the fundamental unit of complex 1 contains one Cu（Ⅱ） ion, half a btc4–, one DMF molecule and one water molecule, forming a half paddlewheel-like building block [Cu2（btc）（DMF）2（H2 O）2] which is different from those previous Cu-btc（Ⅱ） polymers obtained either in water or other media without water. It crystallizes in monoclinic system, space group C2/c with a = 22.8209（14）, b = 9.2244（6）, c = 10.8876（7） ？, b = 117.5210（10）o, V = 2032.6（2） ？3, Z = 2, C8 H10 CuNO6, Mr = 279.71, Dc = 1.828 g/cm3, μ = 2.162 mm-1, F（000） = 1136, the final R = 0.0225 and wR = 0.0652 with I 〉 2s（I）. Furthermore, the thermal stability of complex 1 is observed to be dependent on the polymeric structure nature. And the luminescent measurements show that complex 1 produces strong emission at room temperature.展开更多
基金supported by the National Natural Science Foundation of China(No.21531005)
文摘Self-assembly reaction of 1,2,4,5-benzenetetracarboxylic acid（H4 btc） with CuCl2 in mixed N,N-dimethylformamide（DMF）, methanol and aqueous solution at room temperature generated a 2D complex, [Cu（btc）0.5（DMF）（H2 O）]n（1） which was further characterized by X-ray diffraction, IR spectrum, elemental analysis and TG-DTA experiments. The structure determination reveals that the fundamental unit of complex 1 contains one Cu（Ⅱ） ion, half a btc4–, one DMF molecule and one water molecule, forming a half paddlewheel-like building block [Cu2（btc）（DMF）2（H2 O）2] which is different from those previous Cu-btc（Ⅱ） polymers obtained either in water or other media without water. It crystallizes in monoclinic system, space group C2/c with a = 22.8209（14）, b = 9.2244（6）, c = 10.8876（7） ？, b = 117.5210（10）o, V = 2032.6（2） ？3, Z = 2, C8 H10 CuNO6, Mr = 279.71, Dc = 1.828 g/cm3, μ = 2.162 mm-1, F（000） = 1136, the final R = 0.0225 and wR = 0.0652 with I 〉 2s（I）. Furthermore, the thermal stability of complex 1 is observed to be dependent on the polymeric structure nature. And the luminescent measurements show that complex 1 produces strong emission at room temperature.
