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首页> 外文期刊>International Journal of Quantum Chemistry >EXPLORING TELLURIDES - SYNTHESIS AND CHARACTERIZATION OF NEW BINARY, TERNARY, AND QUATERNARY COMPOUNDS [Review]
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EXPLORING TELLURIDES - SYNTHESIS AND CHARACTERIZATION OF NEW BINARY, TERNARY, AND QUATERNARY COMPOUNDS [Review]

机译：探索碲-新的二元，三元和四元化合物的合成和表征[综述]

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摘要

A fast-growing interest in solid state telluride chemistry has taken place during the past several years. Our research in this area has been primarily on the development and applications of several synthetic techniques that can be applied to the synthesis of the tellurides over a wide temperature range (100-1200 degrees C). These techniques include chemical vapor transport, molten-salt, and hydro(solvo)thermal methods. In this article, we report five binary, ternary, and quaternary metal tellurides, BaTe2, TaCu3 Te-4, RbTaCu2Te4, K2BaSnTe4, and K2Ag2SnTe4, synthesized by the molten-salt (alkali-metal polytelluride flux) reactions at intermediate temperatures (400-550 degrees C). The crystal structures of these compounds have been determined by single crystal X-ray diffraction techniques. Crystal data: BaTe2, space group I4/mcm (No. 140), a = 7.181(1), c = 8.898(2) Angstrom, Z = 4, R1 = 1.55%, wR2 = 3.46%; RbTaCu2Te4, space group P2(1)cn (No. 33), a = 5.982(2), b = 20.316(3), c = 8.192(2) Angstrom, Z = 4, R1 = 7.13%, wR2 4.95%; TaCu3Te4, space group P-43m (No. 215), a = 5.930(2) Angstrom, Z = 1, R1 = 2.40%, wR2 = 6.48%; K2BaSnTe4, space group I-43m (No. 217), a = 8.393(1) Angstrom, Z = 2, R1 = 2.52%, wR2 = 3.56%; K2Ag2SnTe4, space group I-42m (No. 121), a = 8.732(5), c = 7.425(3) Angstrom, Z = 2, R1 = 3.06%, wR2 = 7.25%. (C) 1995 Academic Press, Inc. [References: 107]
机译：在过去的几年中，人们对固态碲化物化学的兴趣迅速增长。我们在这一领域的研究主要集中在几种合成技术的开发和应用上，这些技术可用于在宽温度范围（100-1200摄氏度）内合成碲化物。这些技术包括化学蒸汽传输，熔融盐和水（溶剂）热法。在本文中，我们报告了五种二元，三元和四元金属碲化物，BaTe2，TaCu3 Te-4，RbTaCu2Te4，K2BaSnTe4和K2Ag2SnTe4，它们是通过在中等温度（400-400 550摄氏度）。这些化合物的晶体结构已经通过单晶X射线衍射技术确定。晶体数据：BaTe2，空间群I4 / mcm（第140号），a = 7.181（1），c = 8.898（2）埃，Z = 4，R1 = 1.55％，wR2 = 3.46％; RbTaCu2Te4，空间群P2（1）cn（No. 33），a = 5.982（2），b = 20.316（3），c = 8.192（2）埃，Z = 4，R1 = 7.13％，wR2 4.95％; TaCu3Te4，空间群P-43m（No. 215），a = 5.930（2）埃，Z = 1，R1 = 2.40％，wR2 = 6.48％; K2BaSnTe4，空间群I-43m（编号217），a = 8.393（1）埃，Z = 2，R1 = 2.52％，wR2 = 3.56％; K2Ag2SnTe4，空间群I-42m（编号121），a = 8.732（5），c = 7.425（3）埃，Z = 2，R1 = 3.06％，wR2 = 7.25％。 （C）1995 Academic Press，Inc. [参考：107]

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