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Synthesis and characterization of Ba2SnTe5: A new zintl phase containing unique one-dimensional chains of (SnTe3)(2-) and dimeric units of (Te-2)(2-)

被引：25
作者：
Li, J
Liszewski, YY
MacAdams, LA
Chen, F
Mulley, S
Proserpio, DM
机构：
[1] RIDER UNIV,DEPT CHEM,LAWRENCEVILLE,NJ 08648
[2] UNIV MILAN,DIPARTIMENTO CHIM STRUTTURALE & STEREOCHIM INORGA,I-20133 MILAN,ITALY
来源：
CHEMISTRY OF MATERIALS | 1996年 / 8卷 / 03期
关键词：
D O I：
10.1021/cm950400z
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
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页码：598 / &
页数：4
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