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. 2018 Jun 12;8(38):21407–21413. doi: 10.1039/c7ra00408g

Proton affinity (kJ mol−1) of imides (PA)a.

Amide PA(a) PA(b) PA(c)
1a 945.75 898.82 927.77
1b 951.73 887.15 899.90
2e 981.27 885.84 899.73
5d 951.08 891.88 917.21
9 941.94 889.96 946.81
a

a, b and c: bonding sites for hydrogens (Fig. 4).