Table 1. IR ν(CO) band positions, lifetimes and activation energies for Mn–alkane complexes.

Complex	Solvent, temp/K	ν(CO)/cm–1	Lifetime	E a (kJ mol–1)
CpMn(CO)3	Liq. ethane, 298 a	2032, 1952
	Liq. ethane, 135	2029, 1946
	Isopentane, 298	2030, 1948
	Isopentane, 135	2028, 1944
	scCH4, 298 a	2035, 1955
CpMn(CO)2(alkane)	Liq. ethane, 298 a	1967, 1902	2.0 ± 0.1 μs	38 ± 2
	Liq. ethane, 135	1962, 1895	126 ± 6 s
	Isopentane, 298	1962, 1896	28 ± 1 μs	43 ± 2
	Isopentane, 135	1958, 1890	250 ± 3 s
	scCH4, 298 a	1972, 1908	400 ± 32 ns	41 ± 2

^a Ref. 13.