Table 7.

Equilibrium parameters for the rearrangement of various aryl-substituted complexes derived from 5 and 10.

a	b	R	Yielda	Keq	ΔGexp (kcal/mol)
35a	35b	N(CH3)2	77%	2.15 ± 0.04	−0.45 ± 0.01
31a	31b	n-Bu	77%	2.26b	0.78 ± 0.01
36a	36b	H	70%	0.11b	1.28 ± 0.01
37a	37b	CN	67%	-c	-c
a	b	R	Yielda	Keq	ΔGexp (kcal/mol)
38a	38b	N(CH3)2	75%	1.08 ± 0.02	−0.05 ± 0.01
12a	12b	n-Bu	76%	0.19b	0.97 ± 0.01
39a	39b	H	76%	0.08b	1.47 ± 0.01
40a	40b	CN	70%	-c	-c

^aIsolated yields; prepared in analogy to Table 2.

^bEstimated absolute error is less than 0.01.

^cRearranged species not detected by ¹H NMR.