Synthesis and Structure of Binuclear Cage-like Rare Earth Complex [Eu2(TCM)2(DMSO)6]·2DMSO

Chem. J. Chinese Universities

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Synthesis and Structure of Binuclear Cage-like Rare Earth Complex [Eu₂(TCM)₂(DMSO)₆]·2DMSO

CAI Zheng-Hong¹*, TANG Jing¹, TANG Yu², TAN Min-Yu², YU Kai-Bei³

1. School of Pharmacy, Southwest Jiaotong University, Emei 614202, China;
2. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China;
3. Analysis Center, Chengdu Branch of Chinese Academy of Sciences, Chengdu 610041, China

Received:2007-03-22 Revised:1900-01-01 Online:2007-10-10 Published:2007-10-10
Contact: CAI Zheng-Hong

Abstract

Abstract: A new binuclear cage-like complex, [Eu₂(TCM)₂(DMSO)₆]·2DMSO, was synthesized via the reaction of H₃TCM(H₃TCM={2,4,6-tris[(2-carboxyphenoxy)methyl]-1,3,5-trimethylbenzene}) and Eu³⁺. Single crystal X-ray diffraction study reveals a centro symmetric binuclear neutral entity, space group P2₁/c with a=1.5188(2) nm, b=1.7135(3) nm, c=1.7578(2) nm, β=95.34(2)°, V=4.5549(9) nm³, Z=4. In the complex, Eu³⁺ metal centers are bridged together by mono- and bidentate carboxylate groups from two ligands. The most interesting fact is that the size of solvent molecules has a great influence on the binuclear cage-like complex in the shape of binuclear cage, the coordination mode of carboxylate group and the coordination number of Eu³⁺.

Key words: Rare earth complex, Binuclear cage-like structure, Crystal structure

CLC Number:

O614

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CAI Zheng-Hong¹*, TANG Jing¹, TANG Yu², TAN Min-Yu², YU Kai-Bei³. Synthesis and Structure of Binuclear Cage-like Rare Earth Complex [Eu₂(TCM)₂(DMSO)₆]·2DMSO[J]. Chem. J. Chinese Universities, doi: .

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Synthesis and Structure of Binuclear Cage-like Rare Earth Complex [Eu₂(TCM)₂(DMSO)₆]·2DMSO

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