[(μ3 -F) ((BrF5 ) ]3 ]- - 一个前所未有的分子化酸盐(V) Cs中的离子[Br3 F16 ]
Martin Möbs1, Tim Graubner1, Antti J Karttunen2
1Anorganische Chemie, Fluorchemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032, Marburg, Germany.
Chemistry (Weinheim an der Bergstrasse, Germany)
|July 31, 2023
概括
研究人员合成了一种新的化酸 ((V) 化合物,Cs[Br3F16],具有独特的螺旋形离子. 这一发现揭示了原子上的立体化学活性单一对,这是这种类化合物的首次.
科学领域:
- 无机化学 无机化学 有机化学
- 固态化学 固态化学
- 材料科学 材料科学 材料科学
背景情况:
- 化酸 (V) 通常具有八面体[BrF6]-离子.
- 在[BrF6]-中的单一对是立体化学不活跃的,与相关的化合物不同.
- 之前的研究没有观察到化酸盐中单独对的立体化学活性.
研究的目的:
- 为了合成和描述一种新的化酸 (V) 化合物.
- 为了研究新离子的结构和电子特性.
- 探索 (V) 化合物中单一对的立体化学活性背后的原因.
主要方法:
- 通过Cs[BrF6]与BrF5.5的反应合成Cs[Br3F16].
- 单晶X射线衍射用于结构确定.
- 拉曼光谱和量子化学计算 (包括内在键轨道分析) 用于电子结构和键.
主要成果:
- 发现Cs[Br3F16]含有前所未有的螺旋形,C3-对称的[μ3-F]BrF53]-离子.
- 在新离子中观察原子上的立体化学活性单一对,归因于较长的μ3-F-Br键.
- 量子化学计算证实了μ3-F-Br键的离子性质,并支持单一对活动.
结论:
- 新的化酸 (V) 离子,[μ3-F] (BrF5) 3),具有独特的结构和电子特性.
- 较长的μ3-F-Br键提供了更大的空间,使中单一对立体化学活性成为可能.
- 这一发现扩大了对超价主要组化合物的结合和结构的理解.
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