提高光素衍生物的阴离子结合能力:结构,热力学和计算研究
Katarina Leko1, Andrea Usenik1, Nikola Cindro1
1Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10 000 Zagreb, Croatia.
ACS omega
|November 29, 2023
概括
新的光卡利沙衍生物L1和L2被合成用于阴离子协调. 化合物L1比L2具有更高的阴离子亲和力,稳定性高度依赖于溶剂选择,影响金属阴离子复合.
科学领域:
- 超分子化学 超分子化学
- 有机合成 有机合成
- 分析化学 分析化学
背景情况:
- 卡利沙衍生物是宿主-客人化学的多功能平台.
- 南丁部分可以充当光探针和阴离子协调站点.
- 调整阴离子结合亲和力需要卡利沙边缘的战略功能化.
研究的目的:
- 合成新型光灰[4]烯衍生物 (L1和L2) 结合表丁单元.
- 研究L1和L2与金属酸的阴离子结合特性.
- 确定溶剂和功能组 (三级胺基与) 对复合体稳定性和热力学的影响.
主要方法:
- 合成[4]烯衍生物L1和L2.
- 使用紫外线光谱测量,测量和微热量测量的实验研究.
- 计算分析包括分子动力学和DFT计算.
- 用X射线晶体学进行连接体和复合体的结构性确定.
主要成果:
- 化合物L1 (三级胺基) 呈现出明显高于L2 () 的阴离子亲和力.
- 复合稳定性高度依赖溶剂,以以下顺序下降:MeCN > EtOH > MeOH > DMF > DMSO.
- 热力学参数显示出不同的结合特性,受联体结构和溶剂溶解的影响.
结论:
- 三级胺基功能组增强了卡力沙林衍生物中的阴离子结合亲和力.
- 溶解效应在金属阴离子复合物的稳定性中起着至关重要的作用.
- 合成的化合物提供了选择性阴离子感应和复杂化的潜力.
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