Ba2SnTe5, a novel alkaline-earth-metal tin telluride has been synthesized from a potassium polytelluride salt. Single-crystal X-ray diffraction analysis shows that this compound is a Zintl phase containing unique one-dimensional ''Zweireinfach''-chains of corner-sharing SnTe4 tetrahedra and isolated (Te-2)(2-) dimers. It represents the first ternary alkaline-earth-metal telluride synthesized from a polytelluride flux. Band calculations indicate strong covalent bonding between the Sn and Te within the chain. The interactions between the dimers and the chains are weak and repulsive.
Synthesis and characterization of Ba2SnTe5: A new zintl phase containing unique one-dimensional chains of (SnTe3)(2-) and dimeric units of (Te-2)(2-) / J. Li, Y. Liszewski, L. MacAdams, F. Chen, S. Mulley, D.M. Proserpio. - In: CHEMISTRY OF MATERIALS. - ISSN 0897-4756. - 8:3(1996), pp. 598-600.
Synthesis and characterization of Ba2SnTe5: A new zintl phase containing unique one-dimensional chains of (SnTe3)(2-) and dimeric units of (Te-2)(2-)
D.M. ProserpioUltimo
1996
Abstract
Ba2SnTe5, a novel alkaline-earth-metal tin telluride has been synthesized from a potassium polytelluride salt. Single-crystal X-ray diffraction analysis shows that this compound is a Zintl phase containing unique one-dimensional ''Zweireinfach''-chains of corner-sharing SnTe4 tetrahedra and isolated (Te-2)(2-) dimers. It represents the first ternary alkaline-earth-metal telluride synthesized from a polytelluride flux. Band calculations indicate strong covalent bonding between the Sn and Te within the chain. The interactions between the dimers and the chains are weak and repulsive.Pubblicazioni consigliate
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