一个金色酸盐集群的基导向金属化
Ryan A Smith1, Rafal Kulmaczewski1, Malcolm A Halcrow1
1School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom.
Inorganic chemistry
|June 7, 2023
概括
这项研究详细介绍了来自黄金复合体的黄金集群[Au3(μ-L) ]和[Au4(μ-L) ]的结晶. 金四聚合物促进了与银和铜离子的化,形成了新的金属上分子结构.
科学领域:
- 超分子化学 超分子化学
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
背景情况:
- 金属集群的合成和表征对于开发具有独特电子和结构性质的新材料至关重要.
- 接体设计在控制多核金属复合物的组装和性质方面发挥着关键作用.
研究的目的:
- 研究黄金集群 ([AuL]) 在离散循环结构中的自我组装.
- 探索这些黄金集群与其他金属离子,特别是银 (Ag+) 和铜 (Cu+) 的反应性.
- 描述由此产生的多核金属复合体和金属超分子结构.
主要方法:
- 从各种溶剂中结晶金复合物 ([AuL]) 以获得不同的集群固态度 ([Au3(μ-L) 3和[Au4(μ-L) 4).
- 黄金四聚合物 ([Au4(μ-L) [4]) 与银四化酸盐 (AgBF4) 和铜六化酸盐 ([Cu(NCMe) [4]PF6) 的反应.
- 使用X射线晶体学对由此产生的集群和多核复合体进行结构性表征.
主要成果:
- 从不同的溶剂中分离黄金复合物的循环trimers ([Au3(μ-L) 3)) 和四分离子 ([Au4(μ-L) 4)) .
- 黄金四聚合物具有方形的Au4核心,具有特定的连接物排列,使其能够化到额外的金属离子.
- 通过Ag+桥接Au4核心通过Ag···Au相互作用形成银金星团 ([Ag2Au4(μ3-L) [4][BF4]2).
- 铜金金属合物合物 ([Cu2Au2(μ-L) [4][PF6]2) 的合成,其中包括铜氧化和部分集群碎片化.
结论:
- 配体3-[pyrid-2-yl]-5-tertbutyl-1H-pyrazole (HL) 有效地引导黄金的自我组装成离散的循环集群.
- 预先组织的金四体作为一个多功能平台,用于用银和铜构建复杂的多核金属组件.
- 这些发现突出了通过受控的金属 - 连接体相互作用设计复杂的金属 - 超分子结构的潜力.
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