Bifunctional Mixed-Lanthanide Cyano-Bridged Coordination Polymers Ln0.5Ln鈥?sub>0.5(H2O)5[W(CN)8] (Ln/Ln鈥?= Eu3+/Tb3+, Eu3+<

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• 作者：Elena Chelebaeva ; J茅r么me Long ; Joulia Larionova ; Rute A. S. Ferreira ; Luis D. Carlos ; Filipe A. Almeida Paz ; Jos茅 B. R. Gomes ; Alexander Trifonov ; Christian Gu茅rin ; Yannick Guari
• 刊名：Inorganic Chemistry
• 出版年：2012
• 出版时间：August 20, 2012
• 年：2012
• 卷：51
• 期：16
• 页码：9005-9016
• 全文大小：643K
• 年卷期：v.51,no.16(August 20, 2012)
• ISSN：1520-510X

文摘

A new family of mixed-lanthanide cyano-bridged coordination polymers Ln_0.5Ln鈥?sub>0.5(H₂O)₅[W(CN)₈] (where Ln/Ln鈥?= Eu³⁺/Tb³⁺, Eu³⁺/Gd³⁺, and Tb³⁺/Sm³⁺) containing two lanthanide and one transition metal ions were obtained and characterized by X-ray diffraction, photoluminescence spectroscopy, magnetic analyses, and theoretical computation. These compounds are isotypical and crystallize in the tetragonal system P4/nmm forming two-dimensional grid-like networks. They present a magnetic ordering at low temperature and display the red Eu³⁺ (⁵D₀ 鈫?⁷F_0鈥?) and green Tb³⁺ (⁵D₄ 鈫?⁷F_6鈥?) characteristic photoluminescence. The Tb_0.5Eu_0.5(H₂O)₅[W(CN)₈] compound presents therefore green and red emission and shows Tb³⁺-to-Eu³⁺ energy transfer.