Understanding the role of flexible alkyl-α,ω-diamine linkers on the substitution behaviour of dinuclear trans-platinum(II) complexes: A kinetic and mechanistic study
作者:Moses Ariyo Olusegun、Desigan Reddy、Deogratius Jaganyi
DOI:10.1016/j.ica.2021.120420
日期:2021.8
An investigation of the role of flexible alkyl-α,ω-diamine linkers on the substitution behaviour of dinuclear trans-platinum(II) complexes. The substitution reactions of four dinuclear trans-platinum(II) complexes viz. [PtNH3Cl2]2-µ-NH2(CH2)2NH2] (P12), [PtNH3Cl2]2-µ-NH2(CH2)3NH2] (P13), [PtNH3Cl2]2-µ-NH2(CH2)4NH2] (P14) and [PtNH3Cl2]2-µ-NH2(CH2)5NH2] (P15) with three neutral thiourea-based nucleophiles
柔性烷基-α,ω-二胺连接基对双核反铂(II)配合物取代行为的作用研究。四种双核反铂(II)配合物的取代反应。[PtNH 3氯2 ] 2 -μ-NH 2(CH 2)2 NH 2 ](P12),[PtNH 3氯2 ] 2 -μ-NH 2(CH 2)3 NH 2 ](P13),[PtNH 3 Cl 2 ] 2-µ-NH 2(CH 2)4 NH 2 ](P14)和[PtNH 3 Cl 2 ] 2 -µ-NH 2(CH 2)5 NH 2 ](P15)与三个中性的基于硫脲的亲核试剂:硫脲(TU),ñ -甲基-2-硫脲(MTU)和N,ñ -二甲基-2-硫脲(DMTU)的下定量研究伪常规紫外-可见和停止流分光光度计测定的一阶条件随浓度和温度的变化而变化。络合物的配体取代反应确实以三个连续步骤进行。每个步骤都遵循相应配合物和亲核试剂的一级动力学。用于顺序取代氯配体,胺和连接子的后续位移的伪一级速率常数k obs(1/2/3)遵循速率定律:k