Table 1.

Relative kinetic (k_RH/k_R′H) and thermodynamic (K_RH/R′H) selectivity of C–H bond activation for substrates RH by complex 1.

3-R[a]	RH	kRH/kR′H[b]	KRH/R′H[c]	3-R[a]	RH	kRH/kR′H[b]	KRH/R′H[c]
3 a		>106	n.d.[d]	3 f		17	170
3 b		700	370	3 g		16	160
3 c		280	40	3 h		15	30
3 d		220	750	3 i		1.7	1
				3 j		1.5	n.d.[d]
3 e		36	26 000	3 k		1	0.6[e]

^[a]Products 3-R formed from 1 and the explicitly drawn C–H bond in the corresponding substrate RH.[8]

^[b]Relative rates (k_RH/k_R′H) for RH activation by 1 calculated per reactive RH bond at 45°C; k_R′H = k_RH for 2,3-dimethyl-2-butene.

^[c]Relative thermodynamic stability (K_RH/R′H) of products 3-R relative to 3 i measured at 150°C from 1 and calculated per reactive RH bond.

^[d]Determination of thermodynamic selectivity was unsuccessful owing to decomposition of 3-R. [e] Thermodynamic selectivity measured at 105°C.