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Disordered Microtwinned (Sc1-x)Sc4Co6Sn18 (x = 0.14)

Bogdan Ya. Kotur   ORCID icon ; Department of Inorganic Chemistry, The Ivan Franko State University of Lviv, Kyryla & Mefodiya Str. 6, UA–290005 Lviv, Ukraine
Radovan Černý ; Laboratoire de Cristallographie, Université de Genève, 24, quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland

Puni tekst: engleski, pdf (2 MB) str. 341-350 preuzimanja: 160* citiraj
APA 6th Edition
Kotur, B.Y. i Černý, R. (1999). Disordered Microtwinned (Sc1-x)Sc4Co6Sn18 (x = 0.14). Croatica Chemica Acta, 72 (2-3), 341-350. Preuzeto s
MLA 8th Edition
Kotur, Bogdan Ya. i Radovan Černý. "Disordered Microtwinned (Sc1-x)Sc4Co6Sn18 (x = 0.14)." Croatica Chemica Acta, vol. 72, br. 2-3, 1999, str. 341-350. Citirano 28.01.2021.
Chicago 17th Edition
Kotur, Bogdan Ya. i Radovan Černý. "Disordered Microtwinned (Sc1-x)Sc4Co6Sn18 (x = 0.14)." Croatica Chemica Acta 72, br. 2-3 (1999): 341-350.
Kotur, B.Y., i Černý, R. (1999). 'Disordered Microtwinned (Sc1-x)Sc4Co6Sn18 (x = 0.14)', Croatica Chemica Acta, 72(2-3), str. 341-350. Preuzeto s: (Datum pristupa: 28.01.2021.)
Kotur BY, Černý R. Disordered Microtwinned (Sc1-x)Sc4Co6Sn18 (x = 0.14). Croatica Chemica Acta [Internet]. 1999 [pristupljeno 28.01.2021.];72(2-3):341-350. Dostupno na:
B.Y. Kotur i R. Černý, "Disordered Microtwinned (Sc1-x)Sc4Co6Sn18 (x = 0.14)", Croatica Chemica Acta, vol.72, br. 2-3, str. 341-350, 1999. [Online]. Dostupno na: [Citirano: 28.01.2021.]

The crystal structure and composition of (Sc1-x)Sc4Co6Sn18 (x = 0.14) were refined from single crystal X-ray diffraction data. The structure is disordered microtwinned tetragonal, I41/acd, a = 13.341(8), c = 26.69(2) Å, V = 4749.8 Å3, Z = 8, Dx = 7.58 g cm-3, Mr = 2708.5, μ = 23.85 mm-1, 73 refined parameters, R = 0.0638 for 1639 observed unique reflections with F0 > 4σ(F0). The title compound belongs to a large series of stannides with formula (M1-xSnx)-M4M'6Sn18 (M = rare earth, M’ = Co, Ru, Rh, Ir, Os) and two related structures (tetragonal phase II with cell parameters a ≈ 13.7, c ≈27.4 Å and pseudo-cubic phase IF (earlier sometimes called phase III) with a ≈ 13.7 Å, which was explained as microtwinned phase II). The crystal was microtwinned. The refined volume fractions of three twin domains were 0.381(7), 0.287(7) and 0.332(7), respectively. A microtwinning of phase II seems to be an intrinsic feature of its structure thus reducing the probability of the forma-tion of the ideal cubic structure IF during the crystal growth.

Ključne riječi
scandium; rare earths; stannides; intermetallic compounds; crystal chemistry; twinning

Hrčak ID: 132176


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