Structural Characterization of Cerium-encapsulated Preyssler-type Phosphotungstate: Additional Evidence of Ce(III) in the Cavity
Waddell, Paul G.
Egawa Ooyama, Haruka
Errington, R. John
Single crystal X-ray structure analysis
Single-crystal X-ray structure analysis revealed the precise structure of a Ce-encapsulated Preyssler-type phosphotungstate which was first synthesized by Pope et al. Antonio et al. reported that encapsulated Ce has a 3+ oxidation state and is redox-inactive, which is unlike other Ce-containing phosphotungstates. Therefore, precise structural analysis about Ce position is needed. The encapsulated Ce was located in one of the side cavities, and was coordinated to one H2O molecule. The position of Ce was similar to that of Y3+ and Eu3+ in similar compounds. This result, together with the bond valence sum calculation, provides additional evidence that the oxidation state of the redox-inactive Ce in the Preyssler-type compound is 3+.
This research was supported by JSPS KAKENHI, Grant No. JP18H02058 (Grant-in-Aid for Scientific Research (B)), International Network on Polyoxometalate Science at Hiroshima University, and the EPSRC-JSPS core-to-core program.
Journal of Inorganic and General Chemistry
This is the peer reviewed version of the following article: K. Shitamatsu, T. Kojima, P. G. Waddell Sugiarto, H. E. Ooyama, R. J. Errington, M. Sadakane, Z. Anorg. Allg. Chem. 2021, 647, 1239, which has been published in final form at https://doi.org/10.1002/zaac.202100075. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
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