New pseudo-one-dimensional metals: M2Mo6Se6 (M = Na,In, K,TI), M2Mo6S6 (M = K,Rb, Cs), M2Mo6Te6 (M = In,TI) |
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Authors: | M Potel R Chevrel M Sergent JC Armici M Decroux Ø Fischer |
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Institution: | Université de Rennes, Laboratoire de Chimie Minérale B, Laboratoire Associé au C.N.R.S. No. 254, Avenue du Général Leclerc, 35042 Rennes Cedex, France;Université de Genève, Départment de Physique de la Matière Condensée, 32, Boulevard d''Yvoy, 1211 Geneva 4, Switzerland |
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Abstract: | We present a new series of ternary chalcogenides, derived from divalent molybdenum: M2Mo6X6. These compounds crystallize in a hexagonal lattice with a ≈ 9 Å, c ≈ 4.5 Å, and space group . The compounds are characterized by clusters (Mo3)1∞ in the form of linear chains, resulting from a linear condensation of Mo6 octahedral clusters. The (Mo3)1∞ clusters are well separated from each other, with the shortest MoMo intercluster distance larger than 6 Å. The resulting pseudo-one-dimensional structures show remarkable anisotropy of physical properties. |
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