Dynamic Rotational Motions of Vaulted Chiral
<i>trans</i>
‐Bis(salicylaldiminato)palladium(II) Complexes Bearing Rigid or Flexible Carbon Chain Linkers
作者:Masahiro Ikeshita、Takeshi Naota
DOI:10.1002/ejic.201800666
日期:2018.11.25
trans‐bis(salicylaldiminato)palladium(II) complexes having a macrocyclic vaulting structure consisting of either a heptamethylene‐butadiynylene‐heptamethylene (1) or polymethylene (2) bridge were synthesized and subsequently characterized by NMR, IR, high‐resolution mass spectrometry, and single crystal XRD. The dynamic rotational behaviors of these vaulted complexes resulting from a skipping‐rope‐like molecular
合成具有大环拱形结构的平面手性,反式-双-(水杨基铝二氨基)钯(II)配合物,由七亚甲基-丁二炔-庚基亚甲基(1)或聚亚甲基(2)桥组成,随后通过NMR,IR,高分辨率进行表征质谱和单晶XRD。在光学纯(100%ee)外消旋化的动力学研究的基础上,研究了这些跳跃状复合物的动态旋转行为,这些复合物是由跳绳状分子运动引起的。)复合体。发现手性转化率受配合物构象柔性的显着影响,而构象柔性又可以通过调节接头长度,接头刚性和溶剂的连接特性来控制。