Institut de Chimie, UMR CNRS 7177, Institut Le Bel, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France.
Molecules. 2023 Jan 18;28(3):983. doi: 10.3390/molecules28030983.
In this study, a series of new heteroleptic copper(I) bis(diimine) complexes are described. Using one highly hindered phenanthroline ligand and a second less-hindered diimine ligand led to unexpected results. Following a two-step one-pot method to obtain heteroleptic copper(I) complexes, an almost perfect tetrahedral coordination geometry around the copper(I) ion was obtained in several cases, despite the fact that at least one ligand was not sterically encumbered near the coordination site (at the position α to the nitrogen atoms of the ligand). This was demonstrated in the solid state by resolution of crystal structures, and these findings, corroborated by calculations, showed that the non-covalent interactions between the two diimine ligands present in these complexes were governing these structural features. The electronic properties of all complexes were also determined and the fluorescence lifetimes of two complexes were compared.
在这项研究中，描述了一系列新的杂配铜（I）双二亚胺配合物。使用一个高度位阻的菲咯啉配体和第二个位阻较小的二亚胺配体，得到了意想不到的结果。通过两步一锅法获得杂配铜（I）配合物，在几种情况下，尽管至少有一个配体在配位位置（在配体的氮原子的α位）附近没有空间位阻，但仍获得了几乎完美的四面体形配位几何形状。这通过晶体结构的解析在固态中得到证明，这些发现得到了计算的证实，表明存在于这些配合物中的两个二亚胺配体之间的非共价相互作用控制了这些结构特征。所有配合物的电子性质也被确定，并且比较了两个配合物的荧光寿命。
