New class of Preyssler-lanthanide complexes with modified and extended structures tuned by the lanthanide contraction effect

Chao Qin, Xue Zhi Song, Sheng Qun Su, Song Dang, Jing Feng, Shu Yan Song, Zhao Min Hao, Hong Jie Zhang

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

A family of polyoxometalate compounds based on Preyssler anions and lanthanide cations, K 5Na 5[{Pr 4(H 2O) 12(pydc) 4}{Na(H 2O)P 5W 30O 110}]·46H 2O (1, H 2pydc = pyridine-2,6-dicarboxylic acid), Na 7[{Pr 4(H 2O) 20(pydc) 2(Ac)}{Na(H 2O)P 5W 30O 110}]·23H 2O (2), and Na 10H 2 [{Ln 2(H 2O) 10(pydc) 2}{Na(H 2O)P 5W 30O 110}]·XH 2O (Ln = Sm 3, Eu 4, Gd 5; X = 11 for 3 and 5, 13 for 4), have been synthesized and characterized by elemental analysis and single crystal X-ray diffraction. Compound 1 exhibits a two-dimensional honeycomb layer which is built up from unique {Pr 4} metallacycles and Preyssler anions. Remarkably, the strong involvement of the sodium countercations leads to the formation of a unique three-dimensional open architecture with one-dimensional channels. The 2D grid layer of compound 2 is constructed by the longest currently known rare-earth metal clusters {Pr 8} and Preyssler anions. Isostructural compounds 3, 4, and 5, obtained by introduction of the intermediate lanthanide ions into the above reaction system, exhibit bisupporting [{Ln 2(H 2O) 10(pydc) 2}{Na(H 2O)P 5W 30O 110}] 12- polyoxometalate cluster structures. The magnetic properties of compounds 1 and 2 and the luminescent properties of compounds 3 and 4 are discussed in this paper.

Original languageEnglish
Pages (from-to)2399-2407
Number of pages9
JournalDalton Transactions
Volume41
Issue number8
DOIs
Publication statusPublished - Feb 28 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

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