“…1,3‐diflurorobenzene, 1,2,3‐triflurorobenzene, 1,3,5‐triflurorobenzene, 1,3,4,5‐tetraflurorobenzene and 1,2,3,4‐tetraflurorobenzene), when other non‐doubly F‐substituted arenes in ortho position are used, such as 1,2,3,4‐tetrafluorobenzene ( Ar FH ), 1,3,5‐trichlorobenzene ( Ar Cl ), and 1,4‐dibromo‐2,5‐difluorobenzene ( Ar Br ), metalation occurs to give the relevant [NaCo(HMDS) 2 (Ar)] intermediates. These species can be isolated and characterized, [13,17] but no ligand redistribution is observed, failing to furnish square planar complexes.…”