Diversities in the chelation of aroylhydrazones towards cobalt(II) salts: Synthesis, spectral characterization, crystal structure and some theoretical studies
作者:Neema Ani Mangalam、M.R. Prathapachandra Kurup、Eringathodi Suresh、Savaş Kaya、Goncagül Serdaroğlu
DOI:10.1016/j.molstruc.2021.129978
日期:2021.5
Five cobalt complexes synthesized from two aroylhydrazones were characterized by elemental analyses, thermogravimetric analysis, molar conductivity, magnetic susceptibility measurements, IR and electronic spectra. Single crystal X-ray structure of one of the complex is also reported and it got crystallized in triclinic space group P1¯ and the crystal structure shows a distorted octahedral geometry
由两个芳酰hydr合成的五种钴配合物通过元素分析,热重分析,摩尔电导率,磁化率测量,红外光谱和电子光谱进行表征。还报道了其中一种配合物的单晶X射线结构,并在三斜晶空间群P中结晶。1个¯晶体结构在金属中心周围显示出扭曲的八面体几何形状。光谱数据表明,芳酰基hydr均是三齿的,并通过偶氮甲氮,肼氧基氧和吡啶基氮进行配位。磁化率测量结果证实了Co(II)配合物的顺磁性质,发现其中一种配合物具有反磁性。此外,进行了HF / 6-311G(d,p)/ LANL2DZ计算,以预测可能导致稳定能降低的分子内相互作用。因此,发现π→π*跃迁负责配体及其钴配合物的稳定能。为了描述和讨论合成配合物的化学反应性和稳定性,量子化学参数(如前沿轨道能),计算出硬度,柔软度,能隙,电负性,化学势,亲电性,极化率和偶极矩。而且,考虑了主要的电子结构原理,例如最大硬度,最小极化率和最小亲电性原理,以评估配合物的稳定性。