Chemistry of the metal carbonyls. Part LIII. Some dicarbonyl-(π-cyclopentadienyl)ruthenium complexes containing metal–metal bonds

Abstract

Several dicarbonyl-(π-cyclopentadienyl)ruthenium complexes containing ruthenium to silicon, germanium, tin, cobalt, and rhenium bonds have been prepared, and spectroscopic evidence for a ruthenium–nickel complex has been obtained. Controlled pyrolysis of [(π-C₅H₅)Ru(CO)₂]₂ gives the tetrameric [(π-C₅H₅)Ru(CO)]₄, and traces of a higher molecular-weight complex. Comparisons with the corresponding iron complexes have been made where appropriate.