TY - JOUR A2 - López, Concepción AU - Pajoudoro, Djafarou Ngouh AU - Lissouck, Daniel AU - Ateba Amana, Baruch AU - Mfomo, Joseph Zobo AU - Abdallah, A. E. B. AU - Toze, Alfred Aristide Flavien AU - Mama, Désiré Bikele PY - 2020 DA - 2020/03/31 TI - Antioxidant Properties of Lapachol and Its Derivatives and Their Ability to Chelate Iron (II) Cation: DFT and QTAIM Studies SP - 2103239 VL - 2020 AB - The elucidation of the complexation of lapachol and its derivatives to Fe2+阳离子已经使用密度泛函理论(DFT)来完成。这种络合已不限于双齿和三齿与Fe2+阳离子。几何优化已经在气体和溶液相(水,乙腈,氯苯,苯,甲苯等)中实现用于使用在理论的B3LYP / 6-311 ++ G(d,p)水平的配体B3LYP / 6-31 + G(d,p)的优化的数据作为起始点。但是,在22种复合物的溶液相的几何优化分析拉帕醇及其衍生物对于Fe2+阳离子被限制在乙腈和苯。络合能量和金属离子亲和(MIA)也已被使用B3LYP法计算。所得到的结果所指示的MIA值和在Fe保持电荷之间的比例2+对于阳离子
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2- (O1,O-2)模式。但是,逆比例已经取得了这两个参数之间
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3- (O2,C = C)的三齿模式。叉子3- (O3,C = C)的三齿配位模式,已经获得了更高的稳定性。在气相这后一种三齿配位,复合物的拓扑分析表现出一个事实,即电子密度集中将O之间3附连到铁配体的氧原子2+而这个金属阳离子。Moreover, the hydrogen bond strength calculated for isolated ligands (situated between 23.92 and 30.15 kJ/mol) is in the range of normal HBs. Collectively, all the complexation processes have shown to be highly exothermic. Our results have also shown that the electron extraction from
铁
2+
拉...
一世相比免费配体复合物是比较困难的。SN - 1565-3633 UR - https://doi.org/10.1155/2020/2103239 DO - 10.1155 /二百一万三千二百三十九分之二千〇二十〇JF - 生物无机化学及应用PB - Hindawi出版KW - ER -