| 对羟基苯乙酸根构筑的镧(Ⅲ)配位聚合物的合成、晶体结构及生物活性 |
| Synthesis, Crystal Structure and Biological Activity of Lanthanum(Ⅲ) Coordination Polymer Constructed with p-Hydroxyphenylacetic Acid Anion |
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| 摘要: 合成了一个新颖的镧配位聚合物{[La(HPAA)3(H2O)2]·2(bipy)·H2O}n (1)(HHPAA=对羟基苯乙酸, bipy=4, 4′-联吡啶)。并通过元素分析、红外光谱和热重分析对产物进行了表征, 用单晶X-射线衍射方法测定了配合物的晶体结构。在配合物1中, La(Ⅲ)的配位构型为畸变的双帽反四棱柱多面体。配合物中每个La(Ⅲ)离子与对羟基苯乙酸根中的氧原子和水分子中的氧原子配位, 形成了一维链状结构, 而4, 4′-联吡啶并未参与配位。此外, 用荧光光谱研究了配合物与DNA之间的相互作用。 |
| 关键词: La(Ⅲ)配合物 对羟基苯乙酸 晶体结构 DNA |
| 基金项目: 浙江省自然科学基金(No.Y4080256)资助项目。 |
| Abstract: A coordination polymer of {[La(HPAA)3(H2O)2]·2(bipy)·H2O}n (1) (HHPAA=p-hydroxyphenylacetic acid, bipy=4,4′-bipyridine) was synthesized and characterized by elemental analysis, IR and TG-DTG. Its crystal structure was determined by single crystal X-ray diffraction method. The complex crystallizes in triclinic with space group P1, cell parameters: a=0.910 52(2) nm, b=1.284 78(3) nm, c=1.958 69(4) nm, α=78.586 0(1)?, β=76.656 0(1)?, γ=73.097 0(1)?, cell volume: V=2.111 98(8) nm3, number of molecules inside the cell: Z=2, relative molecular mass: Mr=958.73. The La(Ⅲ) cation is coordination with oxygen atoms from p-hydroxyphenylacetic acid anions and water molecules, forming a distorted two-capped square antiprism coordination geometry. The adjacent La(Ⅲ) clusters linked by carboxylic groups are connected by HPAA- to form a 1D chain, and the bipyridine is uncoordinated to La(Ⅲ) center. Moreover, the interaction of complex with DNA was also studied by ethidium bromide (EB) fluorescence spectroscopy. CCDC: 900442. |
| Keywords: La(Ⅲ) complex p-hydroxyphenylacetic acid crystal structure DNA |
| 投稿时间：2012-09-08 修订日期：2012-11-22 |
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| 胡未极,吴小勇,刘建风,赵国良.对羟基苯乙酸根构筑的镧(Ⅲ)配位聚合物的合成、晶体结构及生物活性[J].无机化学学报,2013,29(4):861-866. |
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