Synthesis,Crystal Structure and Fluorescent Properties of a New One-Dimensional Polymer [Sm(sal)4(phen)2Na]n
来源期刊：JOURNAL OF RARE EARTHS2005年第1期
论文作者：Xu Cunjin Yang Hui
Key words：samarium; coordination polymer; crystal structure; 1,10-phenanthroline; salicylic acid; rare earths;
Abstract: The title complex, [Sm(sal)4(phen)2Na]n (Ⅰ), where Hsal=salicylic acid, phen=1, 10-phenanthroline, was synthesized by the reaction of samarium chloride with phen and Hsal in ethanol solution and its crystal structure was determined by X-ray diffraction. The crystal is monoclinic, space group C2/c with cell dimensions of a=2.84989 (7) nm, b=0.93347 (2) nm, c=2.27954 (5) nm, β=132.4010 (8), V=4.4781 (2) nm3, Z=4, μ (Mo Kα)=13.97 cm-1, Dc=1.605 g*cm-3. The title complex is a compound, with centre of the Sm and Na atoms which are bridged by two carboxylate ligands. The structure of the complex demonstrates one-dimensional chain bridged by carboxyl groups. The fluorescence spectrum of the complex indicates that the second ligand phen shows enhancement effect on the fluorescence of the complex.
Xu Cunjin1，Yang Hui1
(1.Center of Nanometer Science and Technology, Zhejiang University, Hangzhou 310027, China;
2.Department of Chemistry,Hangzhou Normal College,Hangzhou 310012,China)
Abstract:The title complex, [Sm(sal)4(phen)2Na]n (Ⅰ), where Hsal=salicylic acid, phen=1, 10-phenanthroline, was synthesized by the reaction of samarium chloride with phen and Hsal in ethanol solution and its crystal structure was determined by X-ray diffraction. The crystal is monoclinic, space group C2/c with cell dimensions of a=2.84989 (7) nm, b=0.93347 (2) nm, c=2.27954 (5) nm, β=132.4010 (8), V=4.4781 (2) nm3, Z=4, μ (Mo Kα)=13.97 cm-1, Dc=1.605 g*cm-3. The title complex is a compound, with centre of the Sm and Na atoms which are bridged by two carboxylate ligands. The structure of the complex demonstrates one-dimensional chain bridged by carboxyl groups. The fluorescence spectrum of the complex indicates that the second ligand phen shows enhancement effect on the fluorescence of the complex.
Key words:samarium; coordination polymer; crystal structure; 1,10-phenanthroline; salicylic acid; rare earths;
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