Benzene migration in an osmium cluster: the formation of Os3(CO)7(η6-C6H6)(µ3 : η1 : η2 : η1-C2Me2) from Os3(CO)9(µ3 : η2 : η2 : η2-C6H6). The crystal structure of Os3(CO)7(η6-C6H6)(µ3 : η1 : η2 : η1-C2Me2)

Abstract

The activated cluster [Os₃(CO)₇(C₂H₄)(µ³ : η² : η² : η²-C₆H₆)(MeCN)] reacts with alkynes RC₂R′(R = R′= H, Ph or Me; R = H, R′= Ph; R = ME, R′= Et), to produce the new clusters [OS₃(CO)₇(η⁶-C₆H₆)(µ₃ : η¹ : η² : η¹-RC₂R′)] in which the benzene is bonded to a single metal atom as shown by a single crystal X-ray structure determination of the C₂Me₂ derivative.