2022-Sustainable Industrial Processing Summit
SIPS2022 Volume 1
Alario-Franco Intl. Symp
Solid State Chemistry
| Editors: | F. Kongoli, F. Marquis, S. Kalogirou, B. Raveau, A. Tressaud, H. Kageyama, A. Varez, R. Martins. |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2022 |
| Pages: | 154 pages |
| ISBN: | 978-1-989820-34-6 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Unusual topochemical reactions
Hiroshi Kageyama1;1KYOTO UNIVERSITY, Kyoto, Japan;
Type of Paper: Regular
Id Paper: 436
Topic: 52
Abstract:
Topochemical reactions have led to great progress in the discovery of new metastable compounds with novel chemical and physical properties. The host lattice is considered to be generally immobile and rigid, and the overall crystal architecture of the host oxides is maintained. In my talk, I will present two cases where non-trivial structural conversions occur at low temperatures. The first example is the hexagonal nitride hydride, h-Ca3CrN3H, which converts to an orthorhombic nitride, o-Ca3CrN3, under hydrogen at 673 K, which is accompanied by a rotational structural transformation [1]. The second example is expressed by "Bi12O17Cl2 --> Bi12O17–0.5xFxCl2 (x ≤ 6)", where a sextuple Bi6O8.5 block with 1D rock-salt (RS) units in the FL matrix along the a-axis changes to alternate FL and RS slabs along the c-axis [2].
Keywords:
Advances in the synthesis routes; Mixed-anion compoundsReferences:
[1] Y. Cao et al., Angew. Chem. Int. Ed. 2022, https://doi.org/10.1002/anie.202209187[2] D. Kato et al., Adv. Funct. Mater. 32, 2204112/1-9 (2022)