Luminescent and Magnetic Cyano-Bridged Coordination Polymers Containing 4d−4f Ions: Toward Multifunctional Materials

A new family of cyano-bridged coordination polymers Ln(H2O)5[M(CN)8] (Ln = Eu, Tb, Sm, Gd; M = Mo, W) were obtained and characterized by X-ray diffraction, photoluminescence spectroscopy, and magnetic analyses. These compounds are isomorphous and crystallize in the tetragonal system P4/nmm, forming...

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Bibliographic Details
Published in:Inorganic chemistry 2009-07, Vol.48 (13), p.5983-5995
Main Authors: Chelebaeva, Elena, Larionova, Joulia, Guari, Yannick, Ferreira, Rute A. S, Carlos, Luis D, Paz, Filipe A. Almeida, Trifonov, Alexander, Guérin, Christian
Format: Article
Language:English
Subjects:
Chemical Sciences
Coordination chemistry
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Summary:A new family of cyano-bridged coordination polymers Ln(H2O)5[M(CN)8] (Ln = Eu, Tb, Sm, Gd; M = Mo, W) were obtained and characterized by X-ray diffraction, photoluminescence spectroscopy, and magnetic analyses. These compounds are isomorphous and crystallize in the tetragonal system P4/nmm, forming two-dimensional gridlike networks. The Eu- and Tb-containing coordination polymers are room-temperature optically active emitters displaying the characteristic 5D0 → 7F0-4 (Eu3+) and 5D4 → 7F6−2 (Tb3+) transitions. All of the coordination polymers except Eu(H2O)5[M(CN)8] present long-range magnetic ordering at low temperatures. The coexistence of luminescence with ferromagnetic ordering for Tb(H2O)5[M(CN)8] (M = Mo, W) suggests that these compounds may be considered as bifunctional magneto-luminescent coordination polymers exhibiting diverse physical responses when subjected to various external stimuli.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic900378d