方形平面Pt (II) 复合体对酸性分子的反应性如H+,M+,和[ML]+ (M=Ag,Au) 等
Laura Martínez-Romera1, David Campillo1, Daniel Escudero2
1Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC, Universidad de Zaragoza, C/ Pedro Cerbuna 12, Zaragoza, 50009, Spain.
Chemistry (Weinheim an der Bergstrasse, Germany)
|September 17, 2025
概括
((II) 复合物表现出易斯基性质,与电友如质子和金属离子发生反应. 这项研究探讨了它们的相互作用,揭示了新的复杂结构和结合行为.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 超分子化学 超分子化学
背景情况:
- d8 Pt(II) 复合物可以作为易斯基,与电友形成 Pt→E 键.
- 具有功能化素连接体的Pt(II) 复合物的反应性对开发新的协调化合物很有兴趣.
研究的目的:
- 为了研究d8 Pt(II) 复合物的易斯基属性,用一个CNC连接体.
- 探索这种Pt(II) 复合体与酸性质子和金属子的反应.
- 描述由此产生的复合物,并了解它们的结构和结合特征.
主要方法:
- (II) 复合物的合成与一个2,6-di () -二化 (CNC) 连接体.
- Pt(II) -CNC复合物的反应与含有碳酸或基的氨酸配体.
- 进行X射线晶体学以确定合成复合物的结构.
- 与银 ((I) 和金 ((I) 离子发生反应,形成新的含金属复合物.
主要成果:
- 从素连接体到CNC连接体发生了质子转移,形成了脱质氧协调位.
- 由此产生的复合物通过O-M或O-Ag-O键,而不是Pt-M键,与Ag+和[M(PPh3)]+ (M=Ag,Au) 反应.
- 形成了具有O-H··O系统的双核复合体,类似于O-Ag-O结构.
结论:
- 修改后的CNC连接体中的氧原子有效地与金竞争,作为易斯酸性金属的捐赠点.
- 质子和易斯酸性金属子 (Ag+,Au+,[AgL]+,[AuL]+) 表现出孤立的行为,与连接体系统相似地相互作用.
- CNC联体的平面性质促进了质子转移和随后的协调.
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