Agostic interaction and intramolecular proton transfer from the protonation of dihydrogen ortho metalated ruthenium complexes.

ABSTRACT: Protonation of the ortho-metalated ruthenium complexes RuH(H(2))(X)(P(i)Pr(3))(2) [X = 2-phenylpyridine (ph-py) (1), benzoquinoline (bq) (2)] and RuH(CO)(ph-py)(P(i)Pr(3))(2) (3) with [H(OEt(2))(2)](+)[BAr'(4)](-) (BAr'(4) = [(3,5-(CF(3))(2)C(6)H(3))(4)B]) under H(2) atmosphere yields the corresponding cationic hydrido dihydrogen ruthenium complexes [RuH(H(2))(H-X)(P(i)Pr(3))(2)][BAr'(4)] [X = phenylpyridine (ph-py) (1-H); benzoquinoline (bq) (2-H)] and the carbonyl complex [RuH(CO)(H-ph-py)(P(i)Pr(3))(2)][BAr'(4)] (3-H). The complexes accommodate an agostic C H interaction characterized by NMR and in the case of 1-H by x-ray diffraction. Fluxional processes involve the hydride and dihydrogen ligands in 1-H and 2-H and the rotation of the phenyl ring displaying the agostic interaction in 1

SUBMITTER: Toner A 

PROVIDER: S-EPMC1855409 | biostudies-literature | 2007 Apr

REPOSITORIES: biostudies-literature