12166-44-8Relevant articles and documents
R6TT′2, New Variants of the Fe2P Structure Type. Sc6TTe2 (T = Ru, Os, Rh, Ir), Lu 6MoSb2, and the Anti-typic Sc6Te 0.80Bi1.68
Chen, Ling,Corbett, John D.
, p. 436 - 442 (2004)
The Fe2P structure (P62m) features two 3-fold Fe positions and both 2-fold and 1-fold P sites, and variations in occupancies of the latter pair yield the reported diversity of results. The known Sc6TTe 2 examples for T = Fe-Ni are herein extended to four heavier transition metal T derivatives. An attempt to synthesize bismuth analogues led to the novel inverse derivative in which fractional Te (vice T) occupies the smaller tricapped trigonal prismatic (TTP) Sc polyhedron, and Bi rather than Te occurs in the larger TTP of Sc, with parallel reversal of polarity in the bonding. The reported Lu8Te, which is distributed as Lu 6TeLu2, is the only example in which a transition metal occupies the normal 2-fold P or Te non-metal position, with corresponding large effects on the bonding. Lutetium otherwise does not form R6TTe 2 analogues, but the novel Lu6MoSb2 isotype occurs instead. Extended Hueckel calculations are presented for five examples, and the structural and bonding regularities and varieties are discussed further.
Two new compounds, Β-ScTe and Y3Au2, and a reassessment of Y2Au
Chai, Ping,Corbett, John D.
, p. i53-i55 (2011)
Two new compounds, Β-ScTe (scandium telluride) and Y 3Au2 (triyttrium digold), have been synthesized by high-temperature solid-state techniques and their crystal structures, along with that of Y2Au (diyttrium gold), have been refined by single-crystal X-ray diffraction methods. Β-ScTe is a superstructure of ScTe (NiAs-type), featuring double hexa-gonal close-packed layers of Te atoms with the octa-hedral cavities filled by Sc atoms. Y3Au2 displays a U 3Si2-type structure and is built from Au 2-centered bitrigonal prisms and centered cubes of Y atoms. The structure of Y2Au is better described as an inverse PbCl 2-type structure rather than a Co2Si-type.
Insights into metal framework constructions from the syntheses of new scandium- and yttrium-rich telluride compounds: Y5Ni2Te2 and Sc6PdTe2 [19]
Maggard,Corbett
, p. 10740 - 10741 (2000)
-
