兰他尼德酸盐复合体的固态和溶液结构 (Tris- ((1-纳非氧化物) 的酸盐复合体)
Simon J Coles1, Laura J McCormick McPherson1, Andrew W G Platt2
1UK National Crystallography Service, Chemistry, University of Southampton, Highfield Campus, Southampton SO17 1BJ, UK.
Molecules (Basel, Switzerland)
|June 19, 2024
概括
新的酸盐复合物与三-1-纳菲尔氧化物 (Nap3PO) 的酸盐复合物被合成并进行结构特征. 这些Nap3PO复合体中的兰化物-氧键长度比预期的要长,这表明它们具有独特的协调性质.
科学领域:
- 协调化学 协调化学
- 兰化物化学 兰化物化学
- 有机金属化学 有机金属化学
背景情况:
- 之前没有报道过兰化金属与三-1-纳菲尔氧化物 (Nap3PO) 的协调复合物.
- 兰他尼德酸盐复合物在各种化学应用中都很重要.
研究的目的:
- 用Nap3PO合成和表征新型兰化物(III) 酸盐复合物.
- 阐明这些新复合体中的结构特征和粘合.
- 为了研究这些复合物的协调行为和溶液动力学,跨越兰坦化物系列.
主要方法:
- 酸盐复合物Ln(NO3) 3L4.4的合成
- 用X射线结晶学测定[Ln(NO3) 3L2]·2L复合物的结构.
- 在CD3CN和CDCl3中进行31P和13C核磁共振光谱,以研究溶液行为和磁性转移.
主要成果:
- 酸盐复合物Ln(NO3) 3L4 (Ln = Eu到Lu) 的形成和[Ln(NO3) 3L2]·2L (Ln = Eu,Dy,Ho,Er) 的结构确定.
- 核心结构具有一个八坐标[Ln(NO3) 3L2]单元,附有额外的H-结合的配体.
- 核磁共振研究揭示了整个兰化物系列的协调,溶液中较轻的 (La-Eu) 和较重的 (Tb-Lu) 兰化物之间的结构断裂,以及CDCl3.3中的解离.
结论:
- 与Nap3PO的新型酸盐复合物已成功合成并进行结构性特征.
- Ln-O(P) 键的长度略长于预期,这表明了独特的协调环境.
- 溶液核磁共振研究表明,较轻和较重的兰坦化物之间存在明显的结构差异,以及在较少极性溶剂中复杂的解离.
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