Reactions of (η6-arene)(η6-[2.2]paracyclophane)ruthenium(II) complexes with nucleophiles
Abstract
Single addition of the nucleophiles X–= H–, CN– or OH– to (η6-arene)(η6-[2.2]paracyclophane)ruthenium(II) tetrafluoroborate (arene = benzene, p-cymene, 1,4-diisopropylbenzene or hexamethylbenzene) and the osmium(II)η6-C6H6 analogue produces the (η5-cyclohexadienyl)(η6-[2.2]paracyclophane)metal(II) complexes as the sole products. These compounds have been identified by 1H NMR and by infrared spectroscopy. The expected isotope shift is observed when Na[BD4] is used in place of Na[BH4]. The steric factors influencing the site of nucleophilic attack are discussed and nucleophilic addition to [Ru(η6-C16H16)2][BF4]2 is also examined.