ortho-Metallation and related reactions. Part VI. Triaryl phosphite derivatives of dodecacarbonyltriruthenium

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Abstract
Reactions between Ru3(CO)12 and P(OR)3 afford the complexes Ru3(CO)12 –n[P(OR)3]n(R = Ph, n= 2 or 3; R =p-tolyl, n= 3). The trisubstituted complexes undergo intramolecular metallation and degradation reactions in refluxing decalin, to give Ru(CO)2[P(OC6H3R)(OC6H4R)2]2[R = H (2 isomers) or Me], Ru2H(CO)3[P(OC6H3R)(OC6H4R)2]2[OP(OC6H4R)2](R = H or Me), and H4Ru4(CO)9[P(OPh)3]3. Possible mechanisms of formation of these complexes are discussed.