关于 Zn 的理论研究
Daniella B de Miranda1, Susana Quintal2, Glaucio B Ferreira3,4
1Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de S. João Batista s/n., Centro, Niterói, RJ, 24210-130, Brazil.
Journal of molecular modeling
|June 6, 2023
概括
这项研究探讨了复合物与酸盐连接体,发现反应是自发的和外热的. 这些发现突出了酸盐的存在.
科学领域:
- 协调化学 协调化学
- 计算化学的计算化学
- 材料科学 材料科学 材料科学
背景情况:
- 酸盐是多功能有机化合物,对协调化学有很大的兴趣.
- 它们表现出与金属离子的多种结合模式,导致各种应用.
- 主要应用包括重金属修复,生物活动 (抗菌,抗癌) 和材料科学作为硫化物前体.
研究的目的:
- 研究用n-propyl,n-butyl和n-pentyl酸盐联体替代的复合物的热化学和电子特性.
- 为了分析水中复合体中的水分子的替代反应,用酸盐连接体.
- 为了阐明由此产生的-酸盐复合物的电子结构和结合特性.
主要方法:
- 在多个层面使用密度函数理论 (DFT) 的理论研究 (M06L,M06-2X,wB97XD,B3LYP/6-311++G**+LANL2TZ).
- 使用Gaussian09.09进行优化和正常模式计算.
- 对连续的替代阶段 (离子和中性复合体) 的分析.
- 在M06L/6-311++G**+LANL2TZ水平使用Gamess.Z进行电子能量分解 (EDA) 和自然键轨道 (NBO) 分析.
主要成果:
- 形成具有扭曲八面体几何形状的复合体.
- 负和吉布斯自由能量值,表示外热和自发替代过程.
- Zn2+复合体表现出离子和共价性质,在单替代复合体中,离子性质占主导地位.
- 高的捐赠者-受体相互作用能量表明Zn-S键的轨道重叠是显著的.
结论:
- 在复合体中用酸盐替代水联体,在热力学上是有利的,而且是自发的.
- 这些复合物的电子结构以离子和共价键的混合体为特征,这对它们的稳定性和反应性有影响.
- 这些发现支持了酸盐在需要金属复合和硫化物材料合成的应用中的潜力.
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