挥发性兰化物复合物与化七酸连接体的复合物
Joshua C Zgrabik1, Balaka Bhuniya1, Thomas Branstad Phillips1
1Department of Chemistry, The University of Iowa, E331 Chemistry Building, Iowa City, Iowa 52242, USA. scott-daly@uiowa.edu.
Dalton transactions (Cambridge, England : 2003)
|January 24, 2024
概括
兰化物复合体中的联体化并不总是增加挥发性. 金属封装确保了不同胺离子之间的一致的挥发性,而晶体包装影响了整体的分子间相互作用.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
背景情况:
- 化物复合物的挥发性对于气相分离和薄膜合成至关重要.
- 连接体设计通过控制协调球和和分子间力来影响挥发性.
- 由于这些因素,评估电子产品对波动性的影响具有挑战性.
研究的目的:
- 合成和表征具有各种N4O3配体的挥发性兰坦化物复合物.
- 研究基和基替代剂对复杂挥发性的影响.
- 确定连接物结构和化如何影响兰坦化复合物的挥发性.
主要方法:
- 合成带有CF3,CF2CF2CF3,Me和tBu组的N4O3配体的兰化物复合物.
- 单晶X射线衍射以确定7坐标扭曲的封顶八面体结构.
- 热重力测量分析和散装升华以评估热性能和挥发性.
主要成果:
- 形成了单体,7坐标的化物复合物 (Nd,Er,Yb),完全封装了金属离子.
- 复合物表现出不变的挥发性,无论类离子的大小 (Nd3+与Yb3+).
- 增加的联体化并没有持续地增加挥发性;它的效果取决于替代剂的放置和晶体包装.
结论:
- 金属被N4O3配体封装导致兰化物复合物的尺寸独立的挥发性.
- 联体化对挥发力的影响是复杂的,受晶格内部的硬质和电子因素的影响.
- 密度功能理论建模显示,单元细胞中的总体分子间相互作用是波动的关键决定因素.
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