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. Author manuscript; available in PMC: 2009 Dec 31.
Published in final edited form as: J Am Chem Soc. 2008 Dec 31;130(52):17644–17645. doi: 10.1021/ja8067929

Table 1.

Relative calculated enthalpy and free energy changes for the different structures of the AG b2+ ion.

B3LYP/6-311++G(d,p)

ΔΔH298.15 (kJ/mol) ΔΔG298.15 (kJ/mol)
diketo O Gly 0.0 0.0
diketo O Ala 2.2 3.1
oxaz N ring (Gly) 16.8 16.7
oxaz N free NH2 (Ala) 31.4 31.6
diketo N Ala 56.1 56.9
diketo N Gly 63.1 63.8