32321-65-6Relevant articles and documents
Structure, properties, and bonding of ZrTe (MnP type), a low-symmetry, high-temperature modification of ZrTe (WC type)
Oerlygsson,Harbrecht
, p. 4168 - 4173 (2001)
ZrTe (MnP) was synthesized by high-temperature methods at 1570 K in Ta ampules. The structure of the telluride was determined by means of single-crystal X-ray diffraction to be orthorhombic, Pnma (No. 62), Z = 4, Pearson Symbol oP8, a = 739.15(15) pm, b =
The thermodynamic properties of zirconium ditelluride ZrTe2 to 1500 K
Johnson, G. K.,Murray, W. T.,Deventer, E. H. van,Flotow, H. E.
, p. 751 - 760 (1985)
Low temperature (5 to 350 K) heat capacity, fluorine combustion, and high-temperature (350 to 1500 K) drop-calorimetric measurements have been performed on a specimen of zirconium ditelluride ZrTe2.Thermodynamic quantities are reported at T=298.15 K: the standard molar enthalpy of formation, ΔfH0m(T) = -(294.1 +/- 6.7)kJ.mol-1; the standard molar heat capacity, C0p,m(T) = (74.11 +/- 0.37) J.K-1.mol-1; the standard molar entropy, S0m(T) = (124.24 +/- 0.63) J.K-1.mol-1; and the standard molar Gibbs energy of formation, ΔfG0m(T) = -(290.0 +/- 6.7) kJ.mol-1, all with p0 = 101325 Pa.The thermodynamic properties of ZrTe2 have been calculated to 1500 K.
Zr6STe2 - A zirconium-rich sulfide telluride with a Zr3Te partial structure of the Re3B type
Oerlygsson, Gissur,Conrad, Matthias,Harbrecht, Bernd
, p. 1017 - 1022 (2008/10/08)
Zr6STe2 is accessible through the reduction of a mixture of ZrTe2 and ZrS2 with zirconium in fused tantalum tubes at 1520 K. The spatially averaged crystal structure of Zr6STe2 is described in the space group Cmcm, a = 377.81(4), b = 1156.4(1), c = 887.96(8), Z = 2, Pearson symbol oC18, 320 reflexions (I > 2σ(I)), 22 variables, Rw(I) = 0.088. Zr6STe2 crystallizes in a unique structure type, which can be seen as a filled Re3B type structure. The tellurium atoms are surrounded by nine zirconium atoms situated at the vertices of a distorted, tricapped trigonal prism. The Zr9Te tetrakai-decahedra are connected by common triangular prism faces parallel [100], edges approximately along [001] and common vertices along [010], thus forming a three-dimensional tetrakaidecahedral network ∞3[Zr9/3Te], which is decisively stabilized by homonuclear Zr-Zr-interactions. The tetrakaidecahedra are arranged in such a way, that Zr6 octahedra occur. The octahedra are arranged into layers by sharing edges parallel [100] and vertices along [001]. As a result of a distortion of the structure, every second octahedron is expanded to such an extent as to be able to smoothly accommodate sulfur atoms. According to the modulation of the diffraction intensities, the vacancy ordering in adjacent layers of octahedra occurs independently of each other. Wiley-VCH Verlag GmbH, 2001.
