Crystal structure of Rb2Fe5F17

H. H. Park; P. Gravereau; A. Tressaud; P. Hagenmuller

doi:10.1016/0025-5408(90)90103-9

Crystal structure of Rb₂Fe₅F₁₇

H. H. Park, P. Gravereau, A. Tressaud, P. Hagenmuller

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Fine, whisker-like crystals of Rb₂Fe₅F₁₇ have been obtained from solid state stoichiometric mixtures of RbF and FeF₃. A structural model has been determined from single crystal diffractometer data in the Fmmm orthorhombic space group : a = 14.887(2) A ̊, b = 25.814(3) A ̊, c = 7.560(1) A ̊; z = 8; ρ{variant}_exp. = 3.529 g cm^-3; ρ{variant}_calc.=3.535 g cm^-3; λ_{Co Ka}=1.7903 A ̊; R = 0.068; R_ω = 0.096 for 175 reflections with I σ(I) > 6. The structure has been compared with that of HTB. Rb₂Fe₅F₁₇ exhibits layers of (Fe₅F₁₇)^2n-_n composition containing FeF₆ corned-shared octahedra forming tunnels of hexagonal and triangular sections. Rubidium atoms are located between the layers and within the hexagonal tunnels with statistical occupancy. The structure has been roughly confirmed by TEM. The observed lowering in symmetry from Fmmm may be explained by partial ordering of rubidium and by possible bridging of (Fe₅F₁₇) sheets by FeF₆ octahedra.

Original language	English
Pages (from-to)	321-330
Number of pages	10
Journal	Materials Research Bulletin
Volume	25
Issue number	3
DOIs	https://doi.org/10.1016/0025-5408(90)90103-9
Publication status	Published - 1990 Mar

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/0025-5408(90)90103-9

Cite this

@article{a6dd4af71c3b4d3089103e9ab5355608,

title = "Crystal structure of Rb2Fe5F17",

abstract = "Fine, whisker-like crystals of Rb2Fe5F17 have been obtained from solid state stoichiometric mixtures of RbF and FeF3. A structural model has been determined from single crystal diffractometer data in the Fmmm orthorhombic space group : a = 14.887(2) A ̊, b = 25.814(3) A ̊, c = 7.560(1) A ̊; z = 8; ρ{variant}exp. = 3.529 g cm-3; ρ{variant}calc.=3.535 g cm-3; λCo Ka=1.7903 A ̊; R = 0.068; Rω = 0.096 for 175 reflections with I σ(I) > 6. The structure has been compared with that of HTB. Rb2Fe5F17 exhibits layers of (Fe5F17)2n-n composition containing FeF6 corned-shared octahedra forming tunnels of hexagonal and triangular sections. Rubidium atoms are located between the layers and within the hexagonal tunnels with statistical occupancy. The structure has been roughly confirmed by TEM. The observed lowering in symmetry from Fmmm may be explained by partial ordering of rubidium and by possible bridging of (Fe5F17) sheets by FeF6 octahedra.",

author = "Park, {H. H.} and P. Gravereau and A. Tressaud and P. Hagenmuller",

year = "1990",

month = mar,

doi = "10.1016/0025-5408(90)90103-9",

language = "English",

volume = "25",

pages = "321--330",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Limited",

number = "3",

}

TY - JOUR

T1 - Crystal structure of Rb2Fe5F17

AU - Park, H. H.

AU - Gravereau, P.

AU - Tressaud, A.

AU - Hagenmuller, P.

PY - 1990/3

Y1 - 1990/3

N2 - Fine, whisker-like crystals of Rb2Fe5F17 have been obtained from solid state stoichiometric mixtures of RbF and FeF3. A structural model has been determined from single crystal diffractometer data in the Fmmm orthorhombic space group : a = 14.887(2) A ̊, b = 25.814(3) A ̊, c = 7.560(1) A ̊; z = 8; ρ{variant}exp. = 3.529 g cm-3; ρ{variant}calc.=3.535 g cm-3; λCo Ka=1.7903 A ̊; R = 0.068; Rω = 0.096 for 175 reflections with I σ(I) > 6. The structure has been compared with that of HTB. Rb2Fe5F17 exhibits layers of (Fe5F17)2n-n composition containing FeF6 corned-shared octahedra forming tunnels of hexagonal and triangular sections. Rubidium atoms are located between the layers and within the hexagonal tunnels with statistical occupancy. The structure has been roughly confirmed by TEM. The observed lowering in symmetry from Fmmm may be explained by partial ordering of rubidium and by possible bridging of (Fe5F17) sheets by FeF6 octahedra.

AB - Fine, whisker-like crystals of Rb2Fe5F17 have been obtained from solid state stoichiometric mixtures of RbF and FeF3. A structural model has been determined from single crystal diffractometer data in the Fmmm orthorhombic space group : a = 14.887(2) A ̊, b = 25.814(3) A ̊, c = 7.560(1) A ̊; z = 8; ρ{variant}exp. = 3.529 g cm-3; ρ{variant}calc.=3.535 g cm-3; λCo Ka=1.7903 A ̊; R = 0.068; Rω = 0.096 for 175 reflections with I σ(I) > 6. The structure has been compared with that of HTB. Rb2Fe5F17 exhibits layers of (Fe5F17)2n-n composition containing FeF6 corned-shared octahedra forming tunnels of hexagonal and triangular sections. Rubidium atoms are located between the layers and within the hexagonal tunnels with statistical occupancy. The structure has been roughly confirmed by TEM. The observed lowering in symmetry from Fmmm may be explained by partial ordering of rubidium and by possible bridging of (Fe5F17) sheets by FeF6 octahedra.

UR - http://www.scopus.com/inward/record.url?scp=0024984783&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024984783&partnerID=8YFLogxK

U2 - 10.1016/0025-5408(90)90103-9

DO - 10.1016/0025-5408(90)90103-9

M3 - Article

AN - SCOPUS:0024984783

SN - 0025-5408

VL - 25

SP - 321

EP - 330

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 3

ER -

Crystal structure of Rb₂Fe₅F₁₇

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this