Table 1.

Relative experimental stabilities (kcal·mol⁻¹) of hydrocarbon activation products in equilibria of the type Tp′Rh(L)(R)H + R′H ⇌ Tp′Rh(L)(R′)H + RH

R	ΔG°*
Phenyl	0
HCCHCMe3	5.31
Mesityl	6.65
Methallyl	7.82
Methyl	7.90
n-Pentyl	9.35
c-Hexyl	11.42
c-Pentyl	11.46

*Relative to Tp′Rh(L)(Ph)H (L = CNR).