Synthesis, characterization, theoretical, and antimicrobial studies of indenoquinoxalin-based ligands and their reactions with CuBr(PPh3)3
作者:Bandar A. Babgi、Musab Bawazeer、Najah A. Alzaidi、Muhammad N. Arshad、Abdesslem Jedidi、Noor M. Bataweel、Ahmed M. Al-Hejin、Mostafa A. Hussien
DOI:10.1016/j.molstruc.2021.130309
日期:2021.8
atom; forming a distorted tetrahedral geometry around it. In general, Cu-L3 complex has shorter Cu-P bond lengths compared to the parent complex which suggest less steric hindrance in Cu-L3. None of the three ligands were able to use the nitrogen atoms as donating atoms due to their highly engagement in hydrogen-bonding as observed in the crystal structure of Cu-L3 as well as the theoretical calculations
茚并[1,2 - b ]喹喔啉-11-酮和肼的缩合反应衍生出一系列三个配体(L1来自肼,L2来自苯肼,L3来自硫代氨基脲)。将三种配体与CuBr(PPh 3)3在二氯甲烷中一起搅拌;没有观察到反应,只是在L3的情况下,提供了一个复杂的与式的CuBr(PPH 3)2(κ小号-L3)法(Cu-L3)。配合物的晶体结构表明,分子中的中心铜原子与两个三苯基膦基团,一个溴原子和经由[ S ]配位的茚并[1,2 - b ]喹喔啉-11-亚苄基碳硫代氨基酰肼(L3)配体配位。原子; 在其周围形成扭曲的四面体几何形状。通常,与母体复合物相比,Cu-L3复合物具有较短的Cu-P键长,这表明Cu-L3中的空间位阻较小。正如在Cu-L3的晶体结构中以及理论计算中所观察到的那样,这三个配体均不能使用氮原子作为供体原子,因为它们高度参与氢键结合。此外,理论计算表明,Cu-N相互作用弱,在超过典型键合距离的情况下,长