A new cadmium(Ⅱ) polymer based on imidazole derivative, formulated as [Cd(Hiba)2]n1, H2iba=4-(1-H-imidazol-2-yl) benzoic acid), has been synthesized under hydrothermal conditions. The compound crystallizes in triclin...A new cadmium(Ⅱ) polymer based on imidazole derivative, formulated as [Cd(Hiba)2]n1, H2iba=4-(1-H-imidazol-2-yl) benzoic acid), has been synthesized under hydrothermal conditions. The compound crystallizes in triclinic system, space group Pī with a=7.062(4), b=10.840(7), c=13.099(8), α=98.102(7), β=101.524(7), γ=107.961(7)°, V=912.3(10)3 , Z=2, Mr=486.75, Dc=1.772 Mg/m3 , μ=1.234 mm-1 , F(000)=484, the final R=0.0735 and wR=0.1739 for 2154 observed reflections with I>2σ(I). Polymer 1 consists of (Cd-Hiba)2 zigzag chains, which are further linked by hydrogen bonding to extend into a two-dimensional (2D) corrugated-shape sheet structure. The 2D structures are further connected into a 3D supramolecular edifice through hydrogen bonding. The polymer exhibits exceptional high thermal stability. The bulk purity of the materials of 1 was confirmed through the powder X-ray diffraction (PXRD) patterns. The luminescent property of polymer 1 has also been investigated.展开更多
基金supported by the National Natural Science Foundation of China (No. 21271098, 21071074 and 20871042)Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20104104110004)Natural Science Foundation of the Education Department of Henan Province (No 2011A150019 and 2008B430012)
文摘A new cadmium(Ⅱ) polymer based on imidazole derivative, formulated as [Cd(Hiba)2]n1, H2iba=4-(1-H-imidazol-2-yl) benzoic acid), has been synthesized under hydrothermal conditions. The compound crystallizes in triclinic system, space group Pī with a=7.062(4), b=10.840(7), c=13.099(8), α=98.102(7), β=101.524(7), γ=107.961(7)°, V=912.3(10)3 , Z=2, Mr=486.75, Dc=1.772 Mg/m3 , μ=1.234 mm-1 , F(000)=484, the final R=0.0735 and wR=0.1739 for 2154 observed reflections with I>2σ(I). Polymer 1 consists of (Cd-Hiba)2 zigzag chains, which are further linked by hydrogen bonding to extend into a two-dimensional (2D) corrugated-shape sheet structure. The 2D structures are further connected into a 3D supramolecular edifice through hydrogen bonding. The polymer exhibits exceptional high thermal stability. The bulk purity of the materials of 1 was confirmed through the powder X-ray diffraction (PXRD) patterns. The luminescent property of polymer 1 has also been investigated.
