Crystal Structure, Specific Heat, and119Sn Mössbauer Spectroscopy of CeRu4Sn6: A Ternary Stannide with Condensed, Distorted RuSn6Octahedra

Pöttgen, Rainer; Hoffmann, Rolf‐Dieter; Sampathkumaran, E. V.; Das, I.; Mosel, Bernd D.; Müllmann, Ralf

doi:10.1006/jssc.1997.7565

Cited by 41 publications

(36 citation statements)

References 31 publications

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“…In ternary compounds with a lower cerium content such as Ce 3 Ru 4 Al 12 [39,43], Ce 2 Ru 3 Al 15 [44], CeRu 2 Al 20 [45,46], or CeRu 4 Sn 6 [47] we no longer observe short Ce-Ru distances. Such structures are composed of complex three-dimensional [Ru y X z ] networks with strong covalent Ru-X bonding.…”

Section: Phase Analyses and Crystal Chemistrymentioning

confidence: 62%

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Hermes

Matar

Pöttgen

2009

Zeitschrift Für Naturforschung B

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The aluminide CeRuAl with orthorhombic LaNiAl-type structure contains two crystallographically independent cerium sites which both exhibit relatively short Ce-Ru distances, i. e. 280 -302 pm for Ce1 and 286 -310 pm for Ce2. Susceptibility measurements show intermediate valence behavior of the cerium atoms (1.19(1) µ B per formula unit) and no magnetic ordering down to 2 K. Chemical bonding analysis reveals a non-magnetic ground state and strong Ce-Ru bonding. The Ce-Ru bonding peculiarities of CeRuAl are discussed in line with those of other binary and ternary ceriumruthenium compounds.

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Section: Phase Analyses and Crystal Chemistrymentioning

confidence: 62%

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Hermes

Matar

Pöttgen

2009

Zeitschrift Für Naturforschung B

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“…[7,8] The relationship between the structure of MgCo 4 Ge 6 and that of Au 3 Cu is emphasized in Figure 1. The Au 3 Cu structure derives from a cubic close packing of Au atoms by replacing every fourth Au by a Cu atom in each close packed layer, whilst maintaining the Au triangles.…”

Section: Crystal Structurementioning

confidence: 98%

Crystal Structure and Properties of MgCo₄Ge₆

et al. 2006

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MgCo 4 Ge 6 is a novel compound in the ternary system MgCo-Ge. Single crystals for a structure analysis were obtained from mixtures of the elements at high temperatures in sealed tantalum ampoules. The tetragonal structure [I4 2 m; a = 6.1725(9) and c = 8.660(2) Å; YRu 4 Sn 6 structure type] was determined by X-ray single crystal analysis and refined to R 1 = 0.027 for all data. The electronic structure is discussed by means of density of states and band-structure analyses on the

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“…The formation of cluster units is frequently observed for such intermetallic compounds. In a recent paper we have compared such condensed cluster units for a series of ternary stannides [41].…”

Section: New Indium Compounds Lnptinmentioning

confidence: 99%

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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Crystal Structure, Specific Heat, and119Sn Mössbauer Spectroscopy of CeRu4Sn6: A Ternary Stannide with Condensed, Distorted RuSn6Octahedra

Cited by 41 publications

References 31 publications

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Crystal Structure and Properties of MgCo₄Ge₆

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

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Crystal Structure, Specific Heat, and119Sn Mössbauer Spectroscopy of CeRu4Sn6: A Ternary Stannide with Condensed, Distorted RuSn6Octahedra

Cited by 41 publications

References 31 publications

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Crystal Structure and Properties of MgCo4Ge6

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

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Crystal Structure and Properties of MgCo₄Ge₆