Univalent Gallium Complexes of Simple and ansa‐Arene Ligands: Effects on the Polymerization of Isobutylene

Using [Ga(C 6 H 5 F) 2 ] + [Al(OR F ) 4 ] − ( 1 ) (R F =C(CF 3 ) 3 ) as starting material, we isolated bis‐ and tris‐ η 6 ‐coordinated gallium(I) arene complex salts of p ‐xylene (1,4‐Me 2 C 6 H 4 ), hexamethylbenzene (C 6 Me 6 ), diphenylethane (PhC 2 H 4 Ph), and m ‐terphenyl (1,3‐Ph 2 C 6 H 4 ): [Ga(1,4‐Me 2 C 6 H 4 ) 2.5 ] + ( 2 + ), [Ga(C 6 Me 6 ) 2 ] + ( 3 + ), [Ga(PhC 2 H 4 Ph)] + ( 4 + ) and [(C 6 H 5 F)Ga( μ ‐1,3‐Ph 2 C 6 H 4 ) 2 Ga(C 6...