Transition-metal complexes containing phosphorus ligands. Part XIV. ortho-Metallation reactions involving some triaryl phosphite derivatives of osmium
Abstract
Osmium triphenylphosphine complexes, [OsH4(PPh3)3], [OsH2(CO)(PPh3)3], and [OsHCl(CO)(PPh3)3] react with triphenyl phosphite in boiling organic solvents to yield triphenyl phosphite derivatives which subsequently undergo ortho-metallation. Products isolated and characterised include the substituted derivatives [OsHCl(CO)(PPh3)2(p)] and [OsHCl(CO)(PPh3)(p)2], the metallated species [OsCl(pc)(CO)(PPh3)(p)], [OsCl(pc)(CO)(p)2], [OsH(PC)(CO)(PPh3)(p)], and [OsH(pc)(CO)(p)2], and the dimetallated complexes [Os(pc)2(p)2] and [Os(pc)2(CO)(p)][(P)= P(OPh)3; (pc)=(PhO)2P(OC6H4)].
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