“…Chromatography solvents were of analytical grade and used without purification, with the exception of dichloromethane and hexane which were of chemically pure grade and distilled in air prior to use. [17], ferrocenyldiphenylphosphine [26], dichlorotetracarbonyldirhodium [27], dicarbonylchloro(pyridine)rhodium [28], bis(carbonyl)chloro(4-aminopyridine)dicarbonylchlororhodium [29], chloro(1, 5-cyclooctadiene)rhodium(I) dimer [30], chloro(1,5-cyclooctadiene)(pyridine)rhodium [31], (1,5-cyclooctadiene)-bis(pyridine)rhodium hexafluorophosphate [32] and (1, 5-cyclooctadiene)bis(pyridine)rhodium perchlorate [32]. 1 0 , 2 0 ,3 0 ,4 0 ,5 0 -Pentamethylazaferrocene was prepared according to the method of Fu [33] and obtained courtesy of Dr. P. Beagley, Organometallic Research Group, University of Cape Town.…”