“…A brick-red solid readily precipitated from the solution and was collected by filtration and washed with diethyl ether (3 · 15 mL). The 1 H NMR spectrum of the resultant powder (129 mg) indicated the presence mainly of six products 5,6,7,9,10 and 8, in a molar ratio of 9.5:1.25:1:1:1 and 0.25. Attempts to separate cleanly the complexes by either chromatography or crystallisation failed, and therefore no analytical data are available for the main new products 5 and 7.…”