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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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