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Crystal structures of five compounds in the aluminium-ruthenium-silicon system.

ABSTRACT: Single crystals of five compounds with approximate compositions ∼Ru₁₆(Al_0.78Si_0.22)₄₇, (I), ∼Ru₉(Al_0.70Si_0.30)₃₂, (II), ∼Ru₁₀(Al_0.67Si_0.33)₄₁, (III), ∼Ru(Al_0.57Si_0.43)₅, (IV), and ∼Ru₂(Al_0.46Si_0.54)₉, (V), were obtained from polycrystalline lumps mainly composed of the target compounds, and their crystal structures were determined by means of single-crystal X-ray diffraction. The crystal structure of (I) can be related to that of a cubic rational crystalline approximant to an icosa-hedral quasicrystal through crystallographic shear and then unit-cell twinning. The crystal structure of (II) is isotypic with that of a phase with composition ∼Fe₉(Al,Si)₃₂. The crystal structure of (III) is comprised of edge-sharing Ru(Al,Si)_9-11 polyhedra with disordered chains along edges of polyhedra. The crystal structure of (IV) is of the LiIrSn₄ type. The crystal structure of (V) can be viewed as a crystallographic shear structure derived from that of (IV).

SUBMITTER: Kitahara K

PROVIDER: S-EPMC10561205 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Crystal structures of five compounds in the aluminium-ruthenium-silicon system.

Kitahara Koichi K Takakura Hiroyuki H Iwasaki Yutaka Y Kimura Kaoru K

Acta crystallographica. Section E, Crystallographic communications 20230929 Pt 10

Single crystals of five compounds with approximate compositions ∼Ru16(Al0.78Si0.22)47, (I), ∼Ru9(Al0.70Si0.30)32, (II), ∼Ru10(Al0.67Si0.33)41, (III), ∼Ru(Al0.57Si0.43)5, (IV), and ∼Ru2(Al0.46Si0.54)9, (V), were obtained from polycrystalline lumps mainly composed of the target compounds, and ...[more]

PMID: 37817950

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Crystal structures of five compounds in the aluminium-ruthenium-silicon system.

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Crystal structures of five compounds in the aluminium-ruthenium-silicon system.

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