Two Zn（II） coordination polymers, namely [Zn2（bpy）（aobtc）（H2O）2]·2H2O（1） and [Zn2（bpy）（aobtc）（H2O）]·4H2O（2）（bpy = 4,4＇-bipyridine, H4 aobtc = 3,3＇,5,5＇-azoxybenzenetetracarboxylic acid...Two Zn（II） coordination polymers, namely [Zn2（bpy）（aobtc）（H2O）2]·2H2O（1） and [Zn2（bpy）（aobtc）（H2O）]·4H2O（2）（bpy = 4,4＇-bipyridine, H4 aobtc = 3,3＇,5,5＇-azoxybenzenetetracarboxylic acid） have been hydrothermally synthesized through tuning the p H value of the reaction system（1, C（26）H（22）N（4）O（13）Zn2, Mr = 729.21; 2, C（26）H（24）N4O（14）Zn2, Mr = 747.23）, and their structures have been determined by single-crystal X-ray diffraction analyses. Compound 2 has been further characterized by infrared spectra（IR）, elemental analyses, thermal analyses and powder X-ray diffraction（PXRD） analyses. Additionally, the photoluminescence of 2 is also discussed. The structure demonstrates that the crystal of 2 belongs to the triclinic system, space group P1 with a = 8.41494（18）, b = 9.59838（19）, c = 17.6477（3） ？, α = 91.5098（16）, β = 98.1439（17）, γ = 90.4323（17）°, V = 1410.44（5） ^3, Z = 2, ρcalc = 1.759 g/cm^3, μ = 2.819 mm-1, F（000） = 760.0, R = 0.0311 and w R = 0.0839（I 〉 2σ（I））. Compound 1 shows a two-dimensional monolayer while compound 2 displays a novel 2D double-layered network constructed from monolayer motifs, which is similar to the single layer in 1. Further, each bilayer motif in 2 is interdigitated by two others in a parallel fashion to yield an unusual 2D → 3D interdigitated framework.展开更多
基金Financially supported by the National Natural Science Foundation of China(No.21571149)the Program for Chongqing Excellent Talents in University,the Fundamental Research Funds for the Central Universities(XDJK2013A027,XDJK2016C101)the Open Foundation of Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education(338080045)
文摘Two Zn（II） coordination polymers, namely [Zn2（bpy）（aobtc）（H2O）2]·2H2O（1） and [Zn2（bpy）（aobtc）（H2O）]·4H2O（2）（bpy = 4,4＇-bipyridine, H4 aobtc = 3,3＇,5,5＇-azoxybenzenetetracarboxylic acid） have been hydrothermally synthesized through tuning the p H value of the reaction system（1, C（26）H（22）N（4）O（13）Zn2, Mr = 729.21; 2, C（26）H（24）N4O（14）Zn2, Mr = 747.23）, and their structures have been determined by single-crystal X-ray diffraction analyses. Compound 2 has been further characterized by infrared spectra（IR）, elemental analyses, thermal analyses and powder X-ray diffraction（PXRD） analyses. Additionally, the photoluminescence of 2 is also discussed. The structure demonstrates that the crystal of 2 belongs to the triclinic system, space group P1 with a = 8.41494（18）, b = 9.59838（19）, c = 17.6477（3） ？, α = 91.5098（16）, β = 98.1439（17）, γ = 90.4323（17）°, V = 1410.44（5） ^3, Z = 2, ρcalc = 1.759 g/cm^3, μ = 2.819 mm-1, F（000） = 760.0, R = 0.0311 and w R = 0.0839（I 〉 2σ（I））. Compound 1 shows a two-dimensional monolayer while compound 2 displays a novel 2D double-layered network constructed from monolayer motifs, which is similar to the single layer in 1. Further, each bilayer motif in 2 is interdigitated by two others in a parallel fashion to yield an unusual 2D → 3D interdigitated framework.
