Sc5Re8Si12, a new orthorhombic structure type related to Sc3Re2Si4 and Hf2Ru3Si4
Description
Sc5Re8Si12, Mr=2051.4, orthorhombic, oS100, Amm2, a=14.475(4), b=19.66(1), c=5.237(2) A, V=1490(1) A3, Z=4, Dx=9.14 g cm-3, λ(Mo Kα)=0.7107 A, μ=713 cm-1, F(000)=3492, T=293 K, wR=0.062 for 2269 contributing reflections. The nearly face-centered structure is characterized by infinite parallel columns of face-joined Si-centered square antiprisms and infinite parallel columns of face-joined Re-centered deformed octahedra arranged in two structural slabs similar to those found in Hf2Ru3Si4 and Sc3Re3Si4. With respect of Hf2Ru3Si4 or Sc3Re2Si4 these two slabs are shifted in such a way that one is now the mirror image of the other; furthermore they are separated by additional atoms arranged in a plane and with composition ScRe2Si4. The Sc5Re8Si12 structure is a correction of the previously published model of ScRe2Si3 in which four Sc atoms are missing in the unit cell. (orig.)
Additional details
Publishing Information
- Journal Title
- Acta Crystallogr., Sect. C
- Journal Volume
- 43
- Journal Issue
- 9
- Series
- Acta Crystallogr., Sect. C.
- Journal Page Range
- 1665-1668
- ISSN
- 0108-2701
- CODEN
- ACSCE
INIS
- Country of Publication
- Denmark
- Country of Input or Organization
- Denmark
- INIS RN
- 19039818
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- CRYSTAL STRUCTURE; EXPERIMENTAL DATA; FCC LATTICES; INTERATOMIC DISTANCES; LATTICE PARAMETERS; MEDIUM TEMPERATURE; ORTHORHOMBIC LATTICES; RHENIUM ALLOYS; SCANDIUM ALLOYS; SILICON ALLOYS; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; COHERENT SCATTERING; CRYSTAL LATTICES; CUBIC LATTICES; DATA; DIFFRACTION; DISTANCE; INFORMATION; NUMERICAL DATA; SCATTERING