Table 4. Flexibility K_a of nitrile and amine azotosomes, and activation energy ΔE to remove a molecule from each azotosome.

Species	Ka (J/m2)	ΔE (kcal/mol)
Acrylonitrile	0.26	17.1
Acetonitrile	0.37	5.8
Propanenitrile	0.10	7.6
Butanenitrile	0.13	6.4
Pentanenitrile	0.55	8.4
Hexanenitrile	0.26	6.0
Aminopropane	0.22	5.2
Aminobutane	0.19	6.7
Aminopentane	0.28	7.7
Aminohexane	0.30	7.7
Hexane bilayer	2.20	—