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The Prolific Ternary System Pt/Sn/Nd: Insertion of Pt into the Structures of Sn/Nd Intermetallics Yields Structural Complexity and Wealth
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-06-02 , DOI: 10.1021/acs.inorgchem.3c00318
Chris Celania 1 , Volodymyr Smetana 1, 2 , Gerd H Meyer 3, 4 , Anja-Verena Mudring 1, 2
Affiliation  

The understanding of structure and bonding in intermetallic phases still lags behind that of molecular compounds. For that reason, exploring intermetallic phases and identifying structural patterns and relationships are particularly important for closing this knowledge gap. In particular, here we report on the addition of increasing amounts of platinum to ∼2:1 mixtures of tin and neodymium, which yields eight ternary Pt/Sn/Nd compounds, four of which have not been reported before. Interestingly, except for PtSnNd (1), all observed ternary phases of the system can be derived from the binary compounds Sn2Nd and Sn5Nd2 by adding Pt to the composition(s), as they lie on or close to two lines: Sn2Nd–Pt (Pt0.21(1)Sn2Nd (2), PtSn2Nd (3), Pt1.33Sn2Nd (4), Pt2–xSn2+xNd (x = 0.27(3), 5), and Pt3Sn2Nd (6)) or Sn5Nd2–Pt (Pt1.5Sn5–xNd2 (x = 0.16(2), 7) and Pt3Sn5Nd2–x (x = 0.161(8), 8)). While the introduction of increasing amounts of Pt to the binaries Sn2Nd and Sn5Nd2 leads to stepwise changes in the coordination environment of Nd, Pt preserves its coordination over the entire system in the form of interpenetrating bipyramidal {PtSn5Nd5} clusters.

中文翻译:

丰富的三元体系 Pt/Sn/Nd:将 Pt 插入到 Sn/Nd 金属间化合物结构中可带来结构复杂性和丰富性

对金属间相结构和键合的理解仍然落后于分子化合物。因此,探索金属间相并确定结构模式和关系对于缩小这一知识差距尤为重要。特别是,我们在这里报告了在约 2:1 的锡和钕混合物中添加越来越多的铂,产生八种​​三元 Pt/Sn/Nd 化合物,其中四种以前从未报道过。有趣的是,除了 PtSnNd ( 1 ) 之外,系统中所有观察到的三元相都可以通过将 Pt 添加到组合物中而衍生自二元化合物 Sn 2 Nd 和 Sn 5 Nd 2,因为它们位于两条线上或附近: Sn 2 Nd–Pt (Pt0.21(1) Sn 2 Nd ( 2 )、PtSn 2 Nd ( 3 )、Pt 1.33 Sn 2 Nd ( 4 )、Pt 2– x Sn 2+ x Nd ( x = 0.27(3), 5 ) 和 Pt 3 Sn 2 Nd ( 6 )) 或 Sn 5 Nd 2 –Pt (Pt 1.5 Sn 5– x Nd 2 ( x = 0.16(2), 7 ) 和 Pt 3 Sn 5 Nd 2– x( x = 0.161(8), 8 ))。虽然在二元Sn 2 Nd和Sn 5 Nd 2中引入越来越多的Pt会导致Nd的配位环境逐步变化,但Pt以互穿双锥体{PtSn 5 Nd 5 }形式在整个系统中保持其配位。集群。
更新日期:2023-06-02
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