The hydrothermal reaction of 5-benzylaminoisophthalic acid （H2BAIP） and Zn（CH3COO）2·2H2O in the presence of NaOH gave rise to a three-dimensional （3-D） metal-organic framework containing Zn（Ⅱ）-carboxylat...The hydrothermal reaction of 5-benzylaminoisophthalic acid （H2BAIP） and Zn（CH3COO）2·2H2O in the presence of NaOH gave rise to a three-dimensional （3-D） metal-organic framework containing Zn（Ⅱ）-carboxylate chains, [Zn（BAIP）]n. Single-crystal X-ray diffraction analysis reveals that the complex crystallizes in trigonal space group R-3 with a = 28.354（2）, b = 28.354（2）, c = 8.3821（8） A, e = 120°, V= 5836.0（10） A^3, Z= 18, Mr = 334.62, Dc = 1.714 g·cm^3,μ = 1.909 mm^-1, S = 1.162, F（000） = 3060, the final R = 0.0785 and wR = 0.1121 for 2334 observed reflections （I 〉 2σ-（I））. Zn（Ⅱ） is in a distorted tetrahedral geometry, and BAIP serves as a μ4-bridge using two μ2,η^2-bridging carboxylate groups. BAIP links Zn（Ⅱ） ions into a 3-D network containing hexagonal cavities. The coordination-inert benzyl occupies the void space of the large hexagonal cavities. The complex is thermally stable up to 410℃, and exhibits photoluminescent emission at 522 nm on 402 nm excitation.展开更多
基金Supported by the Natural Science Foundation of Fujian Province(2010J05017)Provincial Education Department of Fujian(JA12070)
文摘The hydrothermal reaction of 5-benzylaminoisophthalic acid （H2BAIP） and Zn（CH3COO）2·2H2O in the presence of NaOH gave rise to a three-dimensional （3-D） metal-organic framework containing Zn（Ⅱ）-carboxylate chains, [Zn（BAIP）]n. Single-crystal X-ray diffraction analysis reveals that the complex crystallizes in trigonal space group R-3 with a = 28.354（2）, b = 28.354（2）, c = 8.3821（8） A, e = 120°, V= 5836.0（10） A^3, Z= 18, Mr = 334.62, Dc = 1.714 g·cm^3,μ = 1.909 mm^-1, S = 1.162, F（000） = 3060, the final R = 0.0785 and wR = 0.1121 for 2334 observed reflections （I 〉 2σ-（I））. Zn（Ⅱ） is in a distorted tetrahedral geometry, and BAIP serves as a μ4-bridge using two μ2,η^2-bridging carboxylate groups. BAIP links Zn（Ⅱ） ions into a 3-D network containing hexagonal cavities. The coordination-inert benzyl occupies the void space of the large hexagonal cavities. The complex is thermally stable up to 410℃, and exhibits photoluminescent emission at 522 nm on 402 nm excitation.
