Synthesis of New Chiral Heterobimetallic Chromium−Ruthenium Complexes by Regioselective Insertion of Ruthenium into the C−S Bond of Tricarbonyl-η⁶-[(thiophenyl)arene]chromium Complexes

We report the synthesis of a series of chiral heterobimetallic complexes of the type [R = (η⁶-arene)Cr(CO)₃, R‘ = H or R = H, R‘ = (η⁶-arene)Cr(CO)₃] and one X-ray structure. All new complexes react with MeI, affording the analogous cationic complexes and the diamagnetic NMR chiral shift reagent TRISPHAT anion has been used to differentiate the enantiomers of a selected complex in solution.