Search results for "Tantalum telluride"

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ChemInform Abstract: Ta1.09Fe2.39Te4, a New Non-Stoichiometric Ternary Tantalum Telluride.

2010

Abstract Ta1.09Fe2.39Te4 was prepared by chemical transport from the elements in sealed silica tubes in a temperature gradient from 700 to 600 °C. It crystallizes in the monoclinic space group P2/m with a = 6.162(2) A , b = 7.852(3) A , c = 7.250(3) A , β = 95.32(3)° and Z = 2 . Its structure can be derived from a hexagonal close packing of tellurium atoms with tantalum and iron atoms in octahedral voids and additional iron atoms in tetrahedral voids. The structure is closely related to the structures of MM'Te2 (MNb, Ta; M′Fe, Co, Ni) and MxFeγTe2 (MNb, x = 0.89, γ = 0.93; MTa, x = 0.77, γ = 0.90).

Crystallographychemistry.chemical_compoundchemistryOctahedronTantalumClose-packing of equal sphereschemistry.chemical_elementGeneral MedicineTelluriumTantalum tellurideTernary operationStoichiometryMonoclinic crystal systemChemInform
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ChemInform Abstract: Ta4BTe8: Tantalum Telluride Cluster Chains with Encapsulated Boron Atoms.

2010

The new metallic chain compound Ta4BTe8 has been synthesized by high-temperature reactions from the elements. The structure consists of chains of fused B-centered Ta6Te12 clusters (shown in the picture), the individual chains being connected by ditelluride groups. The results of band structure calculations indicate that the interstitial B atoms are required for cluster stability.

MetalCrystallographychemistry.chemical_compoundchemistryvisual_artvisual_art.visual_art_mediumCluster (physics)chemistry.chemical_elementGeneral MedicineElectronic band structureBoronTantalum tellurideChemInform
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