摘要
Two novel compounds, {[Co2(epda)2(4,4'-bpy)(H20)z]'3H20}n 1 and {[Co2(epda)2(bpe)(HzO)z]'3HzO}n 2 (H2epda = 5-ethyl-pyridine-2,3-dicarboxylic acid, 4,4'-bpy = 4,4'-bipyridine and bpe = 1,2-di(4-pyridyl)ethylene) were solvothermally synthesized and charac- terized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), and single- crystal X-ray diffraction. Complex 1 is ofmonoclinic system, space group P21/c with a = 13.344(5), b = 14.724(5), c = 8.267(3) A, fl = 105.840(4)~, V= 1562.5(10) A3, Dc = 1.480 g/cm3, Mr = 375.19, Z = 4, F(000) = 712, gl = 1.121 mm-1, the final R = 0.0512 and wR = 0.1260 for 2890 observed reflections with I 〉 2σ(I). 2 belongs to the monoclinic system, space group P21/c with a = 14.224(4), b = 14.726(4), c = 8.287(2) A,β = 99.696(4)°, V= 1711.1(9) A3, Dc = 1.402 g/cm3, Mr = 388.21, Z = 4, F(000) = 740, kt = 1.027 mm-1, the final R = 0.0354 and wR = 0.0862 for 12237 observed reflections with I 〉 2a(/). Both complexes present intimately related structures featuring infinite Co-carboxylate layers of [Con(epda)(H20)]n pillared by 4,4'-bpy (or bpe) molecule to produce the microporous frameworks, Unambiguously indicating that pore dimensions of the framework are regulated by the N,N'-donor pillars.
Two novel compounds, {[Co2(epda)2(4,4'-bpy)(H20)z]'3H20}n 1 and {[Co2(epda)2(bpe)(HzO)z]'3HzO}n 2 (H2epda = 5-ethyl-pyridine-2,3-dicarboxylic acid, 4,4'-bpy = 4,4'-bipyridine and bpe = 1,2-di(4-pyridyl)ethylene) were solvothermally synthesized and charac- terized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), and single- crystal X-ray diffraction. Complex 1 is ofmonoclinic system, space group P21/c with a = 13.344(5), b = 14.724(5), c = 8.267(3) A, fl = 105.840(4)~, V= 1562.5(10) A3, Dc = 1.480 g/cm3, Mr = 375.19, Z = 4, F(000) = 712, gl = 1.121 mm-1, the final R = 0.0512 and wR = 0.1260 for 2890 observed reflections with I 〉 2σ(I). 2 belongs to the monoclinic system, space group P21/c with a = 14.224(4), b = 14.726(4), c = 8.287(2) A,β = 99.696(4)°, V= 1711.1(9) A3, Dc = 1.402 g/cm3, Mr = 388.21, Z = 4, F(000) = 740, kt = 1.027 mm-1, the final R = 0.0354 and wR = 0.0862 for 12237 observed reflections with I 〉 2a(/). Both complexes present intimately related structures featuring infinite Co-carboxylate layers of [Con(epda)(H20)]n pillared by 4,4'-bpy (or bpe) molecule to produce the microporous frameworks, Unambiguously indicating that pore dimensions of the framework are regulated by the N,N'-donor pillars.
基金
supported by the National Natural Science Foundation of China (Nos. 20971064 and 21071074)
the Foundation for University Young Key Teacher by Henan Province (No. 2011GGJS-153)