Anion-Coordination-Assisted Assembly of Supramolecular Charge-Transfer Complexes Based on Tris(urea) Ligands.,Chemistry - A European Journal

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Anion-Coordination-Assisted Assembly of Supramolecular Charge-Transfer Complexes Based on Tris(urea) Ligands.
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2020-01-22 , DOI: 10.1002/chem.201905021
Dan Zhang ₁ , Le-Kai Hou ₁ , Qiang Zhang ₂ , Jia-Wei He ₂ , Hong-Jian Feng ₂ , Frank Würthner ₃ , Xiao-Juan Yang ₁ , Biao Wu ₁

Affiliation

Charge-transfer (CT) complexes, formed by noncovalent bonding between electron-rich (donor, D) and electron-deficient (acceptor, A) molecules (or moieties) have attracted considerable attention due to their fascinating structures and potential applications. Herein, we demonstrate that anion coordination is a promising strategy to promote CT complex formation between anion-binding, electron-rich tris(urea) donor ligands (D) and electron-deficient viologen cation acceptors (A), which form co-crystals featuring infinite ⋅⋅⋅DADA⋅⋅⋅ or discrete (circular DADA or three-decker DAD) π-stacking interactions. These CT complexes were studied by X-ray diffraction, UV/Vis spectroscopy, electric conductivity measurements, charge displacement curve (CDC) calculations, and DFT computations.

中文翻译：

基于三（脲）配体的超分子电荷转移配合物的阴离子配位辅助组装。

由富电子（供体，D）和电子不足（受体，A）分子（或部分）之间的非共价键形成的电荷转移（CT）络合物由于其引人入胜的结构和潜在的应用而备受关注。在本文中，我们证明了阴离子配位是一种有前景的策略，可促进阴离子结合，富电子的三（脲）供体配体（D）和缺电子的紫罗兰色阳离子受主（A）之间形成CT络合物，从而形成共晶。无限⋅⋅⋅DADA⋅⋅⋅或离散（圆形DADA或三层DAD）π堆叠相互作用。通过X射线衍射，UV / Vis光谱，电导率测量，电荷位移曲线（CDC）计算和DFT计算研究了这些CT复合物。

更新日期：2020-01-23

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