Journal
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
Volume 640, Issue 14, Pages 2847-2851Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/zaac.201400375
Keywords
Coordination polymers; Cerium; MOFs; Luminescence; 4; 4-Bipyridine
Categories
Funding
- Deutsche Forschungsgemeinschaft
- Evangelisches Studienwerk Villigst e.V.
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The 2D-coordination polymer (2)[Ce2Cl6(bipy)(4)]py (bipy = 4, 4-bipyridine) shows a 5d-4f centered emission in the soft UV-B region. It was synthesized via the reaction of anhydrous CeCl3 and 4, 4-bipyridine in pyridine under solvothermal conditions. The two-dimensional sheet structure consisting of 4, 4-bipyridine coordinated Ce2Cl6 dimers closes the gap between the known lanthanum (3)[La2Cl6(bipy)(5)]4bipy framework and the 2D networks of the formula (2)[Ln(2)Cl(6)(bipy)(3)]2bipy from praseodymium on. They differ in the number of coordinating bipy linkers, which decreases along La > Ce > Pr, with the remarkable observation that lanthanum, cerium, and praseodymium exhibit different network constitutions. The structure of (2)[Ce2Cl6(bipy)(4)]py exhibits a cem topology constituted of double strands, which are diagonally linked by 4, 4-bipyridine forming trapezoid cavities in-between the strands. The cavities contain intercalated pyridine molecules.
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