only the first carbon-oxygen pendant bond plays a crucial role in regulating the electron density donated by the polyethylenegycoxyl fragment. This is reflected in the insignificant change in the reactivity as the polyethyleneglycoxyl chain increases. The obtained kinetic data are supported by the DFT calculations that reveal a less electrophilic Pt(II) metal centre for complexes bearing the 4′-substituent
摘要[Pt ((4'-ethylglycoxyl)-2,2':6',2''-terpyridine} Cl] Cl([PtCl(tpy)eg] Cl),[Pt (4' -
二乙基甘
氨酰)-2,2':6',2''-叔
吡啶} Cl] Cl([PtCl(tpy)degCl)和[Pt (4'-三乙基甘
氨酰)-2,2':6',2 ”-三联
吡啶} Cl] Cl([PtCl(tpy)teg] Cl),由一系列
生物氮供体亲核试剂组成,即。伪一阶条件下的
吡唑(Pz),三唑(Tz),
咪唑(Im),1-甲基
咪唑(MIm)和
1,2-二甲基咪唑(DIm)作为
甲醇中浓度和温度的紫外/可见分光光度法被调查了。对候选配合物动力学趋势的分析表明,只有第一个碳-氧侧基键在调节聚
乙二醇二氧
乙烯己基片段提供的电子密度中起关键作用。这反映为随着聚
乙二醇氧基链的增加,反应性的微不足道的变化。DFT计算结果支持了所获得的动力学数据