作者:Ryosuke Kobayashi、Toshiki Fujii、Hiroaki Imoto、Kensuke Naka
DOI:10.1002/ejic.202000810
日期:2021.1.22
intermolecular aurophilic interactions depending on the ligand structure except for dpab. Crystal polymorphs of Au2Cl2(dpae) and Au2Cl2(dpap) were observed because of the flexible alkylene linkers of the diarsine ligand. The emission behaviors of the complexes were drastically changed by the ligands, which should affect the energy barrier for internal conversion from the intraligand excitation state to the
最近,我们已经开发出用于制备二价砷配体的合成方法。在此,合成了具有各种二价砷配体[Au 2 Cl 2(diars)]的双核氯化金(I)络合物(diars = dpae,dpap,dpab,顺式dpav,反式dpav,dpapz和dpaq)。X射线晶体学分析表明,除了dpab以外,它们还可以根据配体结构形成分子内或分子间亲液相互作用。Au 2 Cl 2(dpae)和Au 2 Cl 2的晶体多晶型物由于二砷配体的柔性亚烷基连接基,观察到(dpap)。配合物极大地改变了配合物的发射行为,这应该影响从配体内激发态到卤化物-配体电荷转移的内部转换的能垒。因此,某些配合物显示出发光的机械致变色和/或热致变色。