Shane R. O’Leary, Harry Adams and Peter M. Maitlis
Two methyls in each η5-C5Me5 are activated in [{(η5-C5Me5)RuCl2 }2] 1 [by (i) air, (ii) N-chlorosuccinimide and (iii) air]; after carbonylation a mixture of the 1,3- and 1,2-isomers [{η5-C5Me3(CH2Cl) 2}Ru(CO)2Cl] 4a,b is obtained; the X-ray structure of 4a is determined.