excited states at ∼120 cm–1. Reactivity studies with various unsaturated substrates are also presented in this study, which show that the Ti(II) center allows oxidative addition likely via formation of [Ti(η2-R2E2)Cl2(py)n] E = C, N intermediates. A new Ti(IV) compound, mer-[(py)3(η2-Ph2C2)TiCl2], was prepared by reaction with Ph2C2, along with the previously reported complex trans-(py)3Ti═NPh(Cl)2, from
已经开发出一种容易且高产率的已知Ti(II)配合物反式-[(py)4 TiCl 2 ](py =
吡啶)的方案。它的电子结构已通过磁化率,磁圆二色性,高频和高场电子顺磁共振光谱结合
配体场理论和计算方法(密度泛函理论和从头算方法)进行了实验研究。这些研究表明,反式-[(py)4 TiCl 2 ]具有3 E g基态(d xy 1 d xz,yz 1轨道占用),这是自旋-轨道耦合的结果,产生了一个具有EPR活性的基态自旋双峰态,一个在〜60 cm –1处处于激发态的双峰态,另一个在〜120 cm-下处于激发态下的两个激发态– 1。与各种不饱和底物反应性研究也列在这项研究中,它表明,在Ti(II)中心可能允许氧化加成经由形成
钛[Ti(η的2 -R 2 ë 2)
氯2(PY)Ñ ] E = C ^ ,N个中间体。一种新的
钛(IV)化合物,聚体- [(PY)3(η 2 -Ph 2 Ç 2)的TiCl 2