Ternary compounds Ce0.67Pt2Al5 and Ce1.33Pt3Al8

Мурашова, Е. В.; Турсина, А. И.; Bukhan’ko, N. G.; Gribanov, A. V.; Chernyshev, I. V.; Seropegin, Yu. D.

doi:10.1016/j.jallcom.2005.02.008

Cited by 26 publications

(16 citation statements)

References 5 publications

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“…Obviously, the structural model of the Sc 1.2 Fe 4 Si 9.8 type is averaged and does not reflect the real distribution of the atoms within the layer A. The simplest ordered description of the atoms within this layer requires an enlargement of the unit cell along [1][2][3][4][5][6][7][8][9][10], i.e. a √3 times larger lattice parameter a (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1, bottom) [1][2][3][8][9][10][11][12]. Numerous compounds with Sc 1.2 Fe 4 Si 9.8 structure type have been found with silicon, gallium and aluminum within the last three decades [1][2][3][4][5][8][9][10][11][12][13][14][15][16][17][18][19][20]. Even though different ordered varieties of the crystal structure have been proposed for these phases [1][2][3][8][9][10][11][12], none of these structure models has been found experimentally.…”

Section: Introductionmentioning

confidence: 99%

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Yb2Al15Pt6 − the most ordered variety of the Sc1.2Fe4Si9.8 aristotype

et al. 2014

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The title compound was synthesized by reaction of the elemental components in a corundum crucible at 1450 ºC, and subsequent crystal growth using the Bridgman technique. The crystal structure of Yb 2 Al 15 Pt 6 was determined from X-ray single crystal diffraction data: space group Cmcm, Pearson symbol oS92, a = 12.7969(1) Å, b = 7.38813(7) Å, c = 16.3605(2) Å, R F = 0.036 for 1455 observed structure factors and 65 variable parameters. The title compound crystallizes in a new type of structure, which represents an ordered variety of the Sc 1.2 Fe 4 Si 9.8 aristotype. The structure can be described as an (ABB) 2 stacking of two trigonal layers with compositions Yb 4 Al 6 (A) and Pt 6 Al 12 (B). The layers A are almost planar and consist of ytterbium atoms arranged at the apexes of condensed hexagons centered by triangular Al 3 units. The slabs B may be considered as distorted hexagonal close-packed, similar to three adjacent layers I− − − −Cd− − − −I of the structure type CdI 2 (Al− − − −Pt− − − −Al). The structural particularities of Yb 2 Al 15 Pt 6 are discussed in comparison with the related structures of Y 2 Ga 9 Co 3 , Tb 2 Ge 3 Pt 9 , Yb 2 Ga 9 Pd 3 and Er 4 Al 24 Pt 9. A real-space analysis of the chemical bonding with the electron-localizability approach showed that the crystal structure of Yb 2 Al 15 Pt 6 consists of an anionic Al− − − −Pt framework, with Yb cations embedded in cavities. The Al− − − −Pt interactions within the framework are covalent polar, whereas ionic bonding is observed between ytterbium and the framework.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Yb2Al15Pt6 − the most ordered variety of the Sc1.2Fe4Si9.8 aristotype

et al. 2014

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“…Recently, the structures of a number of ternary compounds of the Ce-Pt-Al system have been investigated: CePt 3 Al 5 corresponding to a site exchange in the YNi 5 Si 3 type of structure [1], Ce 0.67 Pt 2 Al 5 [2] with Gd 0.67 Pt 2 Ga 5 type, Ce 1.33 Pt 3 Al 8 [2] with Gd 1.33 Pt 3 Al 8 type of structure, Ce 3 Pt 4 Al 6 with a new structure type [3]. Ce 2 Pt 9 Al 16 is a new aluminide forming in the Ce-Pt-Al system.…”

Section: Introductionmentioning

confidence: 99%

Crystal structure and magnetic properties of the new intermetallic Ce2Pt9Al16

et al. 2009

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“…A systematic investigation of alloys containing aluminum, platinum and cerium has been in progress in our laboratory for a few years. In addition to the known compounds CePtAl [1], CePt 4 Al, and CePt 2 Al 3 [2], CePtAl 2 , CePtAl 3 , and CePt 3 Al 2 [3], five new ternaries from the Al-rich part of the phase diagram were found and structurally characterized: Ce 0.67 Pt 2 Al 5 and Ce 1.33 Pt 3 Al 8 with Gd 0.67 Pt 2 Al 5 -type and Gd 1.33 Pt 3 Al 8 -type structure, respectively [4], CePt 3 Al 5 , which belongs to the YNi 5 Si 3 structure type [5] with site exchange, and Ce 3 Pt 4 Al 6 [6] and Ce 2 Pt 9 Al 16 [7], crystallizing with their own structure types.…”

Section: Introductionmentioning

confidence: 99%

Crystal structures of the new intermetallics Ce3Pt5Al and Ce3Pt5Al2

Турсина¹,

Noël²,

Мурашова³

et al. 2014

Chem. Met. Alloys

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The crystal structures of the ternary intermetallics Ce 3 Pt 5 Al and Ce 3 Pt 5 Al 2 have been determined from single crystal X-ray diffraction data. Ce 3 Pt 5 Al is a new representative of the Ce 3 Pd 5 Si-type of structure: space group Imma, a = 7.3767(4) Å, b = 13.1733(8) Å, c = 7.5884(4) Å, Pearson symbol oI36. Ce 3 Pt 5 Al 2 crystallizes in the triclinic space group P-1 with a = 5.689(2) Å, b = 8.432(3) Å, c = 8.7103(13) Å, α = 102.31(2)º, β = 97.89(2)º, γ = 89.10(3)º (Pearson symbol aP20) and represents a novel structure type. In both structures, the coordination polyhedra are rather irregular. The structures of Ce 3 Pt 5 Al and Ce 3 Pt 5 Al 2 can be represented as packings of Ce-centered polyhedra. Cerium platinum aluminide / X-ray diffraction / Crystal structure

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Ternary compounds Ce0.67Pt2Al5 and Ce1.33Pt3Al8

Cited by 26 publications

References 5 publications

Yb2Al15Pt6 − the most ordered variety of the Sc1.2Fe4Si9.8 aristotype

Yb2Al15Pt6 − the most ordered variety of the Sc1.2Fe4Si9.8 aristotype

Crystal structure and magnetic properties of the new intermetallic Ce2Pt9Al16

Crystal structures of the new intermetallics Ce3Pt5Al and Ce3Pt5Al2

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