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七种新型 Sr(II)-Sm(III) 和 Sr(II)-Dy(III) 配位聚合物：使用不同量咪唑构建五种结构拓扑。

Seven novel Sr(II)-Sm(III) and Sr(II)-Dy(III) coordination polymers: construction of five classes of structural topologies using different amounts of imidazole.

机构信息

Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.

出版信息

Dalton Trans. 2013 Jul 21;42(27):10011-8. doi: 10.1039/c3dt50453k. Epub 2013 May 28.

DOI:10.1039/c3dt50453k
PMID:23712904
Abstract

The employment of pyridine-2,6-dicarboxylic acid (H2pda) and imidazole (im) in the synthesis of Sr(II)-Sm(III) and Sr(II)-Dy(III) coordination polymers has been reported. Seven novel heterometallic coordination polymers of compositions, [Dy3Sr3(pda)7(Hpda)(H2O)9]·6H2O (1), [LnSr(pda)3(H2O)5]·Him·H2O (Ln = Sm(2), Dy(3)), [Ln2Sr(pda)6(H2O)5]·4Him·C2H5OH·nH2O (Ln = Sm(4), n = 4; Dy(5), n = 5), [Sm2Sr2(pda)5(H2O)9]·2H2O (6) and [DySr(pda)3(H2O)4]·Him·3H2O (7), have been prepared and characterized. Complexes 1, 2-3, and 6 display three varieties of 2-D structures. 4-5 and 7 exhibit two types of 1-D chain structures. The structures of the complexes could be controlled via choosing appropriate starting materials and tuning the amount of imidazole. The photo-luminescent properties of these complexes have been investigated. The results show the exclusive luminescence emission bands being characteristic of Sm(III) and Dy(III).

摘要

已报道吡啶-2,6-二羧酸（H2pda）和咪唑（im）在合成 Sr(II)-Sm(III) 和 Sr(II)-Dy(III) 配位聚合物中的应用。七种新的杂金属配位聚合物的组成如下：[Dy3Sr3(pda)7(Hpda)(H2O)9]·6H2O（1），[LnSr(pda)3(H2O)5]·Him·H2O（Ln = Sm(2), Dy(3)），[Ln2Sr(pda)6(H2O)5]·4Him·C2H5OH·nH2O（Ln = Sm(4), n = 4；Dy(5), n = 5），[Sm2Sr2(pda)5(H2O)9]·2H2O（6）和[DySr(pda)3(H2O)4]·Him·3H2O（7），已经被制备和表征。配合物 1、2-3 和 6 显示出三种二维结构。4-5 和 7 表现出两种一维链结构。通过选择合适的起始材料和调节咪唑的量，可以控制配合物的结构。这些配合物的光致发光性能已经被研究。结果表明，Sm(III)和 Dy(III)的特征发光发射带是独特的。

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