Cyclization of chalcones into N-propionyl pyrazolines for their single crystal X-ray, computational and antibacterial studies
作者:Mohammad Asad、Muhammad Nadeem Arshad、Salman A. Khan、Mohammad Oves、Muhammad Khalid、Abdullah M. Asiri、Ataualpa A.C. Braga
DOI:10.1016/j.molstruc.2019.127186
日期:2020.2
was performed with the level of theory as B3LYP/6-311 + G(d,p), investigating the electronic structure characteristics, FMOs and non-linear optical features of said compounds. However, the UV absorption spectra of 2a, 2b and 2c were calculated in acetone by Polarizable Continuum Model (PCM) at TD-B3LYP/6-311+G(d,p), and TD-Cam-B3LYP/6-311+G(d,p), levels. The AIM calculations were performed to explore
摘要 使用丙酸和水合肼将查耳酮环化为 N-丙酰基-2-吡唑啉。吡唑啉的结构由FT-IR、NMR光谱确定,并由单晶X射线衍射(SC-XRD)研究证实。此外,还报道了对这些吡唑啉的基于实验和密度泛函理论 (DFT) 的组合研究。以 B3LYP/6-311 + G(d,p) 的理论水平进行了全面的 DFT 研究,研究了所述化合物的电子结构特征、FMO 和非线性光学特征。然而,2a、2b 和 2c 的紫外吸收光谱在丙酮中通过可极化连续介质模型 (PCM) 在 TD-B3LYP/6-311+G(d,p) 和 TD-Cam-B3LYP/6-311+ 处计算G(d,p),水平。执行 AIM 计算以探索非共价相互作用 (NCI)。所述化合物的计算键长和键角与SC-XRD确定的参数非常一致。具有较小能隙的衍生物的前沿分子轨道的计算排列为电子特征提供了额外的信息,从而提高了衍生物的非线性光学 (NLO) 效率