“…Examples include mono-and polynuclear complexes where the ligand is bonded by its oxygen atom to one or more metals in a terminal (Darensbourg et al, 1989), doubly- (Darensbourg et al, 1988) and triply- (McNeese, et al, 1985) bridging fashion, and through its aromatic ring as an oxocyclohexadienyl ligand (Lee et al, 1995). (Riemann & Singleton, 1973), by phenoxide ions of (Et 4 N)(OC 6 H 5 ) (McNeese et al, 1985). The doubly-bridging phenolate ligands of the dimer are basic, reaction of (1) in CH 3 CN with HBF 4 re-forms the Mn-containing starting material and C 6 H 5 OH.…”