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Structural Characterization of Cerium‐encapsulated Preyssler‐type Phosphotungstate: Additional Evidence of Ce(III) in the Cavity
Author(s) -
Shitamatsu Kota,
Kojima Tatsuhiro,
Waddell Paul G.,
Ooyama Haruka Egawa,
Errington R. John,
Sadakane Masahiro
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202100075
Subject(s) - cerium , valence (chemistry) , redox , crystallography , chemistry , crystal structure , oxidation state , molecule , characterization (materials science) , inorganic chemistry , metal , materials science , nanotechnology , organic chemistry
Abstract 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 H 2 O molecule. The position of Ce was similar to that of Y 3+ and Eu 3+ 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+.