Alkaline Earth Transition Metal Antimonides AT4Sb12 (A = Ca, Sr, Ba; T = Fe, Ru, Os) with LaFe4P12‐Structure

Evers, Christoph B.H.; Boonk, Ludger; Jeitschko, Wolfgang

doi:10.1002/zaac.19946200613

Cited by 43 publications

(20 citation statements)

References 16 publications

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“…10,13,16,18 Indeed, the thermal parameters of the alkaline-earth ions increase with decreasing ionic size. 19 A similar observation was made in rare-earth-filled skutterudites. 11 As previously pointed out by one of the present authors, 3,21 these atoms are ''caged'' in the voids of this structure and, if smaller than the void in which they are caged, may ''rattle,'' thus interacting in a random manner with the lattice phonons.…”

Section: Introductionsupporting

confidence: 63%

Raman scattering study of antimony-based skutterudites

Nolas

Slack

Caillat

et al. 1996

Journal of Applied Physics

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Articles you may be interested inPlasma dispersion effect in heavily doped antimony-based passive optical waveguides Appl. Phys. Lett. 92, 203508 (2008); 10.1063/1.2936298 Two-dimensional photonic crystals in antimony-based films fabricated by holography -earth ions occupy the voids in the skutterudite structure. These void-filling ions interact with some of the lattice vibrations in this structure and produce a shift and broadening of the observed lines. The most prominent lines in all of the samples are the Sb 4 ring-breathing modes.

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Section: Introductionsupporting

confidence: 63%

Raman scattering study of antimony-based skutterudites

Nolas

Slack

Caillat

et al. 1996

Journal of Applied Physics

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“…Several structure refinements of such compounds [35,36] also showed significant defects on the respective rare earth or alkaline earth site and, additionally, showed the same large displacements as the La1 atoms in the LaPtIn 3 structure. The crystal chemical comparison of the LaPtIn 3 structure with the LaFe 4 P 12 structure certainly also implies that the occupancy of the 2 a site with lanthanum is reasonable.…”

Section: New Indium Compounds Lnptinmentioning

confidence: 88%

Platinum-Indium Polyanions in the Structures of LaPtIn4 and LnPtIn3 (Ln = La, Ce, Pr, Nd, Sm) and Structure Refinement of Ce2Pt2In

Galadzhun

Pöttgen

1999

Z. anorg. allg. Chem.

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The title compounds were prepared by reacting the elements in an arc‐melting furnace and subsequent annealing. The LaRuSn3 type structure of the new compounds LnPtIn3 (Ln = La, Ce, Pr, Nd, Sm) was refined from single crystal X‐ray data for LaPtIn3: Pm3n, a = 980.4(2) pm, wR2 = 0.0271, 399 F2 values, 15 variables. Striking structural motifs of LaPtIn3 are condensed distorted trigonal [PtIn6] prisms with Pt–In distances of 269 pm. The lanthanum atoms occupy large cavities within the polyhedral network. Besides Pt–In bonding In–In bonding also plays an important role in LaPtIn3 with In–In distances of 299 and 327 pm. The La1 position is occupied only to 91%, resulting in a composition La0.98(1)PtIn3. The La1 atoms show an extremely large displacement parameter indicating a rattling of these atoms in the In12 cages. The so far most indium rich compound in the ternary system lanthanum‐platinum‐indium is LaPtIn4 which was characterized on the basis of Guinier powder data: YNiAl4‐type, Cmcm, a = 455.1(2) pm, b = 1687.5(5) pm, and c = 738.3(2) pm. The platinum atoms in LaPtIn4 center trigonal prisms with the composition [La2In4]. Together with the indium atoms the platinum atoms form a complex three‐dimensional [PtIn4] polyanion in which the lanthanum atoms occupy large hexagonal tubes. The structure of Ce2Pt2In is confirmed: Mo2FeB2‐type, P4/mbm, a = 779.8(1) pm, c = 388.5(1) pm, wR2 = 0.0466, 433 F2 values, 12 parameters. It is built up from CsCl and AlB2 related slabs with the compositions CeIn and CePt2, respectively. Chemical bonding in the [PtIn3] and [PtIn4] polyanions of LaPtIn3 and LaPtIn4 is discussed.

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“…The crystal structure of the mineral skutterudite CoAs 3 was solved by Oftedal in 1928 [4], and that of the filled skutterudites with general formula RM 4 X 12 (R = large electropositive element, M = transition metal, X = P, As, Sb) [5][6][7] was solved by Jeitschko and Braun [8]. Both structures are cubic (space group Im3) and the R element is inserted in a large cage of the [M 4 X 12 ] subunit (2a site).…”

Section: Introductionmentioning

confidence: 99%