偶氮苯
轨道能级差
化学
配体(生物化学)
亚胺
极性效应
分子轨道
基准集
密度泛函理论
偶极子
计算化学
物理化学
结晶学
立体化学
光化学
分子
有机化学
生物化学
受体
催化作用
作者
Mamoona Jillani,Suhaila Sapari,Mohamad Shazwan Shah Jamil,Fazira Ilyana Abdul Razak
标识
DOI:10.1002/slct.202204046
摘要
Abstract Diphosphine ligands containing {(−HC=N) imine group} demonstrating aliphatic and aromatic framework such as ethane and azobenzene exhibit different nonlinear optical (NLO) properties. In this study, two different ligands N,N′‐Bis ‐(2‐diphenylphosphinobenzyaldehyde)‐ethane‐1,2‐diamine (A) and N,N′‐Bis ‐(2‐diphenylphosphinobenzyaldehyde)‐4,4 azodianiline (B) have been synthesized with a percentage yield of 60–70 % and further characterized by spectroscopic analysis. Comparative study of computational analysis using Gaussian software with DFT method and hybrid functional B3LYP together with basis set 6‐31G++(d,p) has shown good agreement of less than 5 % deviation errors. From previous study, derivatives of these compounds have shown good NLO properties contributing by many factors such as conjugation, electron withdrawing groups (EWG), electron donating groups (EDG), metal mass, highest occupied molecular orbital‐lowest unoccupied orbital (HOMO‐LUMO) and band gap. The evaluation shows that both ligands have high NLO properties established on the value of β tot at 1064 nm wavelength. Studies indicate that ligand B showed highest NLO property with the β tot value of 11.1534×10 −30 esu followed by ligand A 10.3786×10 −30 esu due to increased conjugation in the system. This is supported by the high dipole moment 5.501404 μ (D) of ligand B. These ligands can be further modified by the addition of the metals to form complexes in order to improve NLO properties with the β tot value of complex A 24.0638×10 −30 esu followed by complex B with the β tot value 526.9826×10 −30 esu.
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