Ruthenium complexes of sterically-hindered pentaarylcyclopentadienyl ligands

RSC Adv. 2021 Jun 7;11(33):20207-20215. doi: 10.1039/d1ra03875c. eCollection 2021 Jun 3.


The synthesis of ruthenium complexes incorporating an overcrowded pentaarylcyclopentadienyl ligand has been investigated, and higher efficiency has been reached using chlorine-functionalised precursors when compared with their brominated counterparts. A new methodology for the preparation of chlorocyclopentadienes has been developed which is well adapted for highly sterically hindered compounds and works with either electron rich or poor systems.