DFT和TDDFT对DPA和PTDC结合过渡金属复合物的电子转换和粘合方面进行勘探
Mukhtar Ahmed1, Sumit Sahil Malhotra1, Oval Yadav1
1Department of Chemistry, Central University of Haryana, Mahendergarh, 123031, India.
Journal of molecular modeling
|April 3, 2024
概括
这项研究使用了DFT/TD-DFT方法来研究DPA和PDTC连接体及其Ni-Zn复合体,揭示了它们的电子结构,反应性和光学特性,用于潜在的NLO应用.
科学领域:
- 计算化学计算化学
- 材料科学 材料科学 材料科学
- 量子化学 是一个量子化学.
背景情况:
- 研究了DPA和PDTC连接体及其Ni-Zn复合物的结构,反应性,结合和电子转换.
- 使用密度函数理论 (DFT) 和时间依赖DFT (TD-DFT) 方法进行综合分析.
研究的目的:
- 通过计算边界轨道能量差距来了解连接体和金属复合物的反应模式.
- 评估这些复杂物作为非线性光学 (NLO) 材料的潜力.
- 通过分子静电电位 (MEP) 地图来识别电友和核友网站.
主要方法:
- 采用Gaussian16和ORCA软件进行结构优化和光谱特征计算.
- 使用特定基础集的B3LYP函数 (LanL2DZ用于Ni,Zn;6-311G**用于其他).
- 进行了自然键轨道 (NBO) 分析,以获得结合洞察力和TD-DFT用于激发能量.
主要成果:
- 计算了全球反应性描述符,并确定了复合体中狭窄的HOMO-LUMO差距,表明强大的NLO特性.
- 欧洲议会的地图显示了复杂表面上不同的电友和核友区域.
- 吸收光谱在连接体的250-285nm和复合体的250-870nm之间,提供光学行为信息.
结论:
- 由于其电子结构和极化特征,Ni-Zn复合体表现出显著的NLO特性.
- 与它们的金属复合物相比,DPA和PDTC连接物表现出更高的反应性,由更大的HOMO-LUMO差距证明.
- 这项研究提高了对这些DPA和PDTC金属复合物的电子和光学特性的理解.
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