Table 1 Thermodynamic parameters describing the equilibrium of D-ribose isomerisation in solution at fixed temperature and pressure as estimated by fitting the equilibrium theory (2) to 13C NMR data.

From: Equilibrium and non-equilibrium furanose selection in the ribose isomerisation network

 

Pure water

Hadean water

Species

Ei [kJ/mol]

ηi

\({x}_{i}^{\infty }\)

Ei [kJ/mol]

ηi

\({x}_{i}^{\infty }\)

1, β-pyranose

0

0.75

0.01

0

0.39

0.01

2, α-pyranose

6.2

3.14

0.05

4.2

0.96

0.02

3, β-furanose

13.0

29.27

0.47

14.7

29.88

0.71

4, α-furanose

14.2

29.41

0.47

13.1

10.88

0.26