Journal
CHINESE JOURNAL OF CHEMISTRY
Volume 27, Issue 8, Pages 1481-1486Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.200990249
Keywords
Lanthanide complex; flexible ligand; synthesis; structure; luminescence property
Categories
Funding
- National Natural Science Foundation of China [20773104]
- Program for New Century Excellent Talents in University [NCET-06-0891]
- Key Project of Chinese Ministry of Education [810243]
- Natural Science Foundation of Hubei Province of China [2009CBD030]
- Natural Scientific Research Foundation of Shaanxi Provincial Education Office of China [08JK490, 07JK435]
- Project of Key Laboratory of Shaanxi Province of China
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Two novel lanthanide complexes with the. formulas [Ln(2)(tda)(3)(H2O)(2)], [Ln=Sm (1), Dy (2), H(2)tda=thiodiacetic acid] have been prepared by using the corresponding lanthanide salt and H(2)tda under hydrothermal conditions. Single crystal X-ray diffraction studies show that the two compounds are isostructural and present a 2D network based on the I D metallic chain, in which an edge-sharing dinuclear polyhedral [Ln(2)O(16)] was found to be the building unit of the I D chains. Interestingly, in the network, the tda ligands exhibit two different coordination modes, including the mode L-a: bis(syn,syn-bridging bidentate, chelating-bridging tridentate), and mode L-b: bis(chelating-bridging tridentate, syn, anti-bridging bidentate). Furthermore, through the tda ligand in modes La and Lb, the I D metallic chains are cross-linked to generate a 2D network structure with (3,4,5,6)-connected (4(7).6(8))(4(4).6(6))(4(5).6)-(4(6))(4(3) ) topology. Photoluminescence measurements indicate that the dysprosium complex is yellow emitters, and the samarium complex shows salmon pink light emission in the solid state at room temperature.
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