No abstract

A series of new Ru(II) arene phosphine complexes derived from Binap have been prepared. Specifically, reaction of Ru(OAc) 2 (Binap) with 3,5-(CF 3 ) 2 C 6 H 3 ) 4 B (BArF)‚H(OEt 2 ) 2 , is shown to afford new mono-and dinuclear Ru(II) hydroxyphosphine π-arene complexes via a series of P−C bond cleavage reactions. The dinuclear Ru(II) π-arene complexes contain bridging P(O)(OH) 2 ligands. Crystal structures of five new complexes are reported and suggest an η 4 -arene rather than an η 6 -arene coordination mode. However, in solution, their 13 C NMR data are more consistent with a strongly distorted η 6 -coordination mode. PGSE 1 H and 19 F diffusion measurements on the dinuclear complexes suggest hydrogen bonding of the triflate anion and ion-pairing of the BArFanion.