Spin crossover in oligonuclear iron(II) helicates (C06)

我们将通过a)通过微调配体链上取代基的电子和空间因素来调节配位场分裂能，b)探索立体化学定义的寡核铁(II)配合物的磁手性效应，c)将合适的分子客体包裹到超分子胶囊铁(II)配合物中，d)在不同的配位球体中制备金属离子的寡核配合物，以及e)在配体和链骨架中引入发色体来研究光诱导自旋态捕获(LIESST)效应，来设计其自旋状态可以通过定义和精细的自旋交叉来操纵的铁(II)配合物。

We will design iron(II) complexes whose spin state can be manipulated in a defined and subtle manner in terms of a spin-crossover by a) adjusting the ligand field splitting energy through fine-tuning of the electronic and steric factors of substituents on the ligand strands, b) exploring magnetochiral effects of stereochemically defined oligonuclear iron(II) complexes, c) encapsulation of suitable molecular guest into supramolecular capsular iron(II) complexes, d) preparing oligonuclear complexes with metal ions in different coordination spheres, and e) introducing chromophors in the ligand strands¿ back-bones to study light induced excited spin state trapping (LIESST) effects.