K_xRb_(2-x)PdC_2: A Solid Solution of a Quaternary Acetylide with Vegard Behavior

Markus Krüger; Stefan Liebig; Uwe Ruschewitz

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K_xRb_(2-x)PdC_2: A Solid Solution of a Quaternary Acetylide with Vegard Behavior

机译：K_XRB_（2-X）PDC_2：具有vegard行为的季氨基甲虫的固溶体

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By reacting the ternary acetylides K_2PdC_2 and Rb_2PdC_2 at 300 °C under inert conditions a complete solid solution K_xRb_(2-x)PdC_2 with x = 0-2 was obtained, which was followed and confirmed by synchrotron powder diffraction data. This solid solution shows ideal Vegard behavior, as predicted by Hume-Rothery rules for ΔV < 15% (ΔV = 9.2% for K~+/Rb~+). According to the powder diffraction data the formation of the quaternary acetylides seems to occur via diffusion of the alkali metal ions, whereas the _∞~1 [Pd~0(C_2)_(2/2) ~(2-)] chains remain unaffected during this reaction.

机译：通过将三元乙酰化物K_2PdC_2和Rb_2PdC_2在300°C的惰性条件下进行反应，获得了x=0-2的完整固溶体K_xRb_（2-x）PdC_2，随后通过同步加速器粉末衍射数据进行了验证。该固溶体表现出理想的Vegard行为，正如休谟-罗瑟里规则预测的ΔV<15%（对于K~+/Rb~+，ΔV=9.2%）。根据粉末衍射数据，四元乙酰化物的形成似乎是通过碱金属离子的扩散发生的，而_∞~1[Pd~0（C_2）2（2/2）~（2-）]链在该反应过程中不受影响。

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来源
《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2020年第13期|共4页
作者
Markus Krüger; Stefan Liebig; Uwe Ruschewitz;
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作者单位

Department of Chemistry Institute of Inorganic Chemistry University of Cologne Greinstra?e 6 50939 K?ln Germany;

Department of Chemistry Institute of Inorganic Chemistry University of Cologne Greinstra?e 6 50939 K?ln Germany;

Department of Chemistry Institute of Inorganic Chemistry University of Cologne Greinstra?e 6 50939 K?ln Germany;

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正文语种 eng
中图分类化学;
关键词
Acetylides; Alkali metals; Palladium; Solid solution; Vegard's law;

机译：乙酰糖苷;碱金属;钯;固溶;vegard的法律;

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K_xRb_(2-x)PdC_2: A Solid Solution of a Quaternary Acetylide with Vegard Behavior

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