高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (10): 1804.

• 研究简报 • 上一篇    下一篇

两个二维Cd(Ⅱ)配位聚合物的合成、晶体结构和荧光性质

牛淑云1, 迟玉贤1, 金晶1, 杨光第2, 叶玲2   

  1. 1. 辽宁师范大学化学系, 大连116029;
    2. 吉林大学超分子结构与材料教育部重点实验室, 长春130023
  • 收稿日期:2004-02-12 出版日期:2004-10-24 发布日期:2004-10-24
  • 基金资助:

    国家自然科学基金(批准号:90201018);吉林大学无机合成与制备化学国家重点实验室开放基金(批准号:2001-002)资助

Syntheses, Crystal Structures and Fluorescences of Two Novel 2D Cd(Ⅱ) Coordination Polymers

NIU Shu-Yun1, CHI Yu-Xian1, JIN Jing1, YANG Guang-Di2, YE Ling2   

  1. 1. Department of Chemistry, Liaoning Normal University, Dalian 116029, China;
    2. Key Lab of Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun 130023, China
  • Received:2004-02-12 Online:2004-10-24 Published:2004-10-24

关键词: Cd(Ⅱ)配位聚合物, 合成, 晶体结构, 荧光性质

Abstract: Two novel Cd(Ⅱ) coordination polymers, [Cd2(C10H2O8)\5(H2O)6]n (1) and [Cd4(C6H4O2N)8(H2O)4]n (2) (C10H2O8=1,2,4,5-benzenetetracarboxyl and C6H4O2N=nicotinato), were hydrothermally synthesized and characterized by X-ray diffraction of the single-crystal and fluorescence spectra. Complex 1 crystallizes in triclinic system, space group P1 with a=0.559 62(7) nm, b=0.777 58(6) nm, c=0.969 75(10) nm, α=111.981(5)°, β=101.649(6)°, γ=98.240(5)°, and Z=1. Final R=0.024 8(wR=0.078 5). Complex 2 belongs to orthorhombic system, space group Pbca with unit cell dimensions a=1.144 94(19) nm, b=1.209 69(6) nm, c=1.740 73(8) nm and Z=8. Final R=0.018 5(wR=0.034 8). Both the two complexes are coordination polymers with a two-dimensional infinite structure, the repeat unit is [Cd2(C10H2O8)(H2O)6] (1) and [Cd4(C6H4O2N)8(H2O)4] (2) which are bridged by the ligands of 1,2,4,5-benzenetetracarboxyl(C10H2O8) and nicotinato(NA), respectively. The two polymers show strong fluorescence with λem=433 nm(λex=333 nm, 1) and λem=423 nm(λex=330 nm, 2) in the solid state at room temperature. The emissions observed in the polymers are tentatively assigned to the ligands fluorescence(LLCT).

Key words: Cd(Ⅱ) coordination polymer, Synthesis, Crystal structure, Fluorescence property

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