. Author manuscript; available in PMC: 2008 Dec 24.

Published in final edited form as: Chem Commun (Camb). 2008 Jan 7;(1):97–98. doi: 10.1039/b714302h

Table 1.

Activation parameters for the equilibrium in Scheme 1 (ether)^a

Entry	Diamine	ΔH^‡(kcal/mol)	ΔS^‡(cal/mol·K)
1	None^b	29 ± 3	40 ± 8
2	Bispidine 3	28 ± 1	32 ± 2
3	TMEDA, 2	19 ± 1	0 ± 2
4	(−)-Sparteine, 1	18 ± 1	−6 ± 2

Errors expressed at two standard deviations.

Taken from reference ⁸.