| ［Eu2(o-ClC6H4OCH2COO)6(C12H8N2)2(H2O)2］·(CH3)2SO的晶体结构和荧光光谱 |
| ［Eu2(o-ClC6H4OCH2COO)6(C12H8N2)2(H2O)2］·(CH3)2SO |
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| 摘要: 标题配合物M=1892.01，单斜晶系，空间群P21/c, a=1.2975(3) nm, b=2.6591(9) nm, c=1.2118(3) nm, β=96.95(1)°, Z=2, Dc=1.577 g/cm3, T=293(2)K。最终的偏离因子R=0.0583。该配合物以二聚体形式存在，通过其中的桥联羧基形成了双核分子。该分子中羧基具有桥联双齿、桥联三齿和单齿三种配位模式，Eu-Eu之间的距离为0.4019(1) nm。在77K下测得配合物中Eu(Ⅲ)离子仅有一种格位。 5D0→ 7FJ(J=0～2)跃迁光谱说明Eu(Ⅲ)离子格位具有C2对称性。 |
| 关键词: 铕配合物 晶体结构 荧光光谱 |
| 基金项目: |
| Abstract: The new title complex crystallizes in monoclinic system with space group P21/c, a=1.2975(3) nm, b=2.6591(9) nm, c=1.2118(3) nm, β=96.95(1)°, Z=2, M=1892.01, Dc=1.577 g/cm3, T=293(2)K. The final R=0.0583. The title complex is a dimer, which is linked by the bridged carboxylate groups to form a binuclear molecule. The carboxylate groups in the complex are bonded to the europium ion in the brindged bidentate, the bridged tridentate and the monodentate modes. Eu-Eu distance is 0.4019(1) nm. The results of fluorescence of the complex observed at 77K using 337.1 nm radiation show that the only one Eu(Ⅲ) ion site is in the complex. 5D0→ 7FJ(J=0～2) transition fluorescence spectra combined with the results of X-Ray analysis confirm the C2 symmetry of the Eu(Ⅲ) ion site. |
| Keywords: tetrandrine α-quartz cytotoxicity silicosis calcium ion |
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| 李夏,金林培,王少亭,李言.［Eu2(o-ClC6H4OCH2COO)6(C12H8N2)2(H2O)2］·(CH3)2SO的晶体结构和荧光光谱[J].无机化学学报,1999,15(3):305-309. |
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