syn conformer), [Cp*Ru(Br)C 5 Me 3 (CH 2 Br) 2 ] + (syn and anti conformers), and [Ru(Br)(C 5 Me 4 CH 2 Br) 2 ] + (syn conformer). All complexes were characterized by 1 H and 13 C NMR spectroscopy; the former complex, by elemental analysis. These complexes were also prepared by the reaction of [Cp*RuC 5 Me 4 CH 2 ] + BF 4 with bromine in CH 2 Cl 2 .