Conversion of bonded cyclo-octadiene into a cyclo-octadienyl ligand and cleavage of boron–phenyl bonds of arene-bonded tetraphenylborate anions in ruthenium(II) systems: X-ray crystal and molecular structures of [Ru(η6-C6H5BL3)(1–3,5,6-η-C8H11)](L = Ph or F)

Abstract

Labilisation of the hydrazine ligands in either [Ru(cod)(N₂H₄)₄][BPh₄]₂(I; cod = cyclo-octa-1,5-diene) or [RuH(cod)(NH₂NMe₂)₃][BPh₄](II) in acetone produces [Ru(η⁶-C₆H₅BPh₃)(1–3,5,6-η-C₈H₁₁)] which reacts with HA (A = BF₄ or PF₆) to give [Ru(η⁶-C₆H₅-BF₃)(1–3,5,6-η-C₈H₁₁)]; a byproduct of the reaction with (II) is [Ru(cod)(C₆H₆)].