[Cu(C6Cl2F3)(tht)]4: An Extremely Efficient Catalyst for the Aryl Scrambling between Palladium Complexes

Abstract

The copper compound [Cu(C6Cl2F3)(tht)]4 (1) (tht: tetrahydrothiophene) is an excellent catalyst for the trans- to cis- isomerization of complexes [PdAr2(tht)2](Ar: fluoroaryl) and also for the exchange of aryls between those palladium complexes. Herein, we also communicate the synthesis and characterization of 1, and some of its derivatives. The x-ray structure of 1 shows a linear chain of copper atoms, supported by fluoroaryl rings. The NMR 19F-DOSY study indicates that this structure is preserved in solution although in equilibrium with other species.