高等学校化学学报

高等学校化学学报

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三核锌配位化合物Zn3(phen)2(2,4-DAA)6的水热合成、晶体结构、荧光和电化学性质

杨颖群1, 李昶红2, 李薇1, 李东平3, 匡云飞1   

    1. 衡阳师范学院化学与材料科学系, 衡阳 421008;
    2. 湖南工学院化学化工系, 衡阳 421002;
    3. 南京大学配位化学研究所, 南京 210093
  • 收稿日期:2007-08-16 修回日期:1900-01-01 出版日期:2008-03-10 发布日期:2008-03-10
  • 通讯作者: 李薇

Hydrothermal Synthesis, Crystal Structure, Luminescence and Electrochemical Properties of Trinuclear Zinc(Ⅱ) Complex Zn3(phen)2(2,4-DAA)6

YANG Ying-Qun1, LI Chang-Hong2, LI Wei1*, LI Dong-Ping3, KUANG Yun-Fei1   

    1. Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421002, China;
    2. Department of Chemistry and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China;
    3. Coordination Chemistry Institute, Nanjing University, Nanjing 210093, China
  • Received:2007-08-16 Revised:1900-01-01 Online:2008-03-10 Published:2008-03-10
  • Contact: LI Wei

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摘要： 以2,4-二氯苯氧乙酸(2,4-DAA)和邻菲啰啉(Phen)为原料, 采用水热法合成了一个新的三核锌配合物Zn3(phen)2(2,4-DAA)6. 该配合物属三斜晶系, P1空间群, 晶胞参数a=1.1030(2) nm, b=1.2930(3) nm, c=1.5081(3) nm, α=100.436(3)°, β=110.227(3)°, γ=103.802(3)°, V=1.8760(7) nm3, Dc=1.661 g/cm3, Z=1, F(000)=944. 最终GooF=1.033 , 偏离因子R1=0.0326, wR2=0.0736. 在配合物分子中, 3个锌(Ⅱ)离子在同一直线上, 且以中间锌(Ⅱ)为对称中心, Zn1…Zn2的距离为0.3378 nm; 3个锌(Ⅱ) 离子存在两种配位方式: 其中对称的锌离子分别与3个2,4-二氯苯氧乙酸中的3个羧基氧原子及一个邻菲啰啉的2个N原子配位, 形成了五配位的变形四方锥结构, 而中间的锌离子与6个2,4-二氯苯氧乙酸中的6个羧基氧原子配位, 形成了六配位变形八面体结构. 研究了配合物的光谱和电化学性质.

关键词: 三核锌(Ⅱ)配合物, 水热合成, 晶体结构, 荧光和电化学性质

Abstract: A novel complex Zn3(phen)2(2,4-DAA)6(2,4-DAA=2,4-dichlorophenoxy acetic acid phen=1,10 phenanthroline) was synthesized by means of hydrothermal method and characterized as crystallizing in the triclinic system with space group P1, a=1.1030(2) nm, b=1.2930(3) nm, c=1.5081(3) nm, α=100.436(3)°, β=110.227(3)°, γ=103.802(3)°, V=1.8760(7) nm3, Dc=1.661 g/cm3, Z=1, F(000)=944. Final GooF=1.033, R1=0.0326, wR2=0.0736. The crystal structure shows that the three coordinated zinc(Ⅱ) ions lie in the same line with the middle one as the symmetric center. The distance between the central zinc(Ⅱ) and the symmetric one is 0.3378 nm. There exist two coordination modes for the three zinc(Ⅱ) ions: (1) The symmetric zinc(Ⅱ) ions are coordinated with three oxygen atoms and two nitrogen atom from three 2,4-dichlorophenoxy acetic acid molecules and one 1,10 phenanthroline molecule, respectively, forming a distorted square-pyramid coordination geometry. (2) The middle zinc(Ⅱ) ions is coordinated with six oxygen atoms from six 2,4-dichlorophenoxy acetic acid molecules, respectively, forming a distorted octahedral coordination geometry. The luminescence and electrochemical properties of the complex are also studied.

Key words: Trinuclear zinc(Ⅱ) complex, Hydrothermal synthesis, Crystal structure, Luminescence and electrochemical properties

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