Ruthenium titanocene and ruthenium titanium half-sandwich bimetallic complexes in catalytic cyclopropanation

The synthesis of three new ruthenium titanium half-sandwich bimetallic complexes (p-cymene)[(μ-η5:η1-C5H4(CH2)nPR2)TiX3]RuCl2 (n = 0, X = Cl, R = Ph (11); n = 2, X = OiPr, R = Ph (12); n = 2, X = OiPr, R = Cy (13)) has been achieved. The structure of 11, determined by X-ray diffraction, is reported here. These bimetallic complexes and a complementary series of ruthenium titanocene bimetallic complexes have been tested in catalytic cyclopropanation.