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Similarities of Coordination Polymer and Dimeric Complex of Europium(III) with Joint and Separate Terpyridine and Benzoate

Z. Anorg. Allg. Chem. 2020, 646 (20), 1710‑1714

DOI: 10.1002/zaac.201900319

Sedykh A.; Sotnik S.; Kurth D.; Volochnyuk D.; Kolotilov S.; Müller-Buschbaum K.

A dimeric complex of trivalent europium [Eu2Cl4(bc)2(ptpy)2] (1), containing the separate ligands 4'‐phenyl‐2,2':6',2''‐terpyridine (ptpy) and benzoate (bc) and a one‐dimensional double strand coordination polymer of the composition 1[EuCl2(cptpy)] (2) with 4‐[2,2':6',2''‐terpyridin]‐4'‐yl‐benzoate (cptpy) were obtained. The products exhibit structural similarities despite the character of joint and separate functionality of the ligands. The dimer 1 shows photoluminescence with high quantum yield [61(2)%]. Eu3+ emission lifetime is 1.493(1) ms at room temperature and rises to 1.649(1) ms upon cooling to 77 K.

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