Topotactic synthesis and crystal structure of a highly fluorinated Ruddlesden-Popper-type iron oxide, Sr $_{3}$ Fe $_{2}$ O $_{5+x}$ F $_{2-x}$ (x 0.44)

Tsujimoto, Yoshihiro*; Yamaura, Kazunari*; Hayashi, Naoaki*; Kodama, Katsuaki ; Igawa, Naoki ; Matsushita, Yoshitaka*; Katsuya, Yoshio*; Shirako, Yuichi*; Akaogi, Masaki*; Muromachi, Eiji*

Topotactic reaction of the Ruddlesden-Popper phase Sr $_{3}$ Fe $_{2}$ O $_{7-delta}$ ( 0.18) with polytetrafluoroethylene yields a highly fluorinated phase Sr $_{3}$ Fe $_{2}$ O $_{5+x}$ F $_{2-x}$ (x 0.44), compared with Sr $_{3}$ Fe $_{2}$ O $_{6}$ F $_{0.87}$ prepared by the reaction of Sr $_{3}$ Fe $_{2}$ O $_{6}$ and F $_{2}$ gas. Structure analyses based on powder neutron diffraction, synchrotron powder diffraction, and $^{57}$ Fe Mssbauer spectroscopy measurements demonstrate that the new oxyfluoride perovskite has no anion deficiencies and adopts the tetragonal structure (space group 4/) with lattice constants = 3.87264(6) and = 21.3465(6) at room temperature. The fluoride ions preferentially occupy the terminal apical anion sites with oxide ions in a disordered manner, which results in square pyramidal coordination around iron.

Language	:	English
Journal	:	Chemistry of Materials
Volume	:	23
Number	:	16
Pages	:	p.3652 - 3658
Publication Year/Month	:	2011/08
Meeting title	:
Held date	:
Location (city)	:
Location (country)	:
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1021/cm201075g
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	JRR-3M(研究炉3)
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	物質・材料研究機構

Accesses	:	- Accesses
Web of Science® Times Cited Count	:	Times Cited Count： If you would like to get the latest times cited, please access the Web of Science®. http://www.webofknowledge.com/wos
InCites™	:	Percentile:59.91 Category:Chemistry, Physical
Altmetrics	:

Registration No. : AA20110341
JAEA Abstracts No. : 39001216
Paper Submission No. : 9480

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.

Topotactic synthesis and crystal structure of a highly fluorinated Ruddlesden-Popper-type iron oxide, SrFeOF (x 0.44)

Topotactic synthesis and crystal structure of a highly fluorinated Ruddlesden-Popper-type iron oxide, Sr $_{3}$ Fe $_{2}$ O $_{5+x}$ F $_{2-x}$ (x 0.44)