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Gas-phase proton affinities (PA), acidity and bond dissociation energy (BDE) of alkylated and oxidized thymine bases
| Base | PA (kcal/mol) | Acidity (kcal/mol) | BDE (kcal/mol) |
|---|---|---|---|
| T | 208.19 | 332.22 | 133.92 |
| O2-MeT | 233.01 | 611.32 | 410.18 |
| O2-EtT | 234.54 | 609.18 | 407.95 |
| O2-iPrT | 235.47 | 607.52 | 406.19 |
| O2-iBuT | 235.28 | 608.08 | 406.77 |
| O4-EtT | 227.04 | 615.08 | 416.14 |
| N3-EtT | 213.33 | 617.01 | 416.41 |
| hmU | 205.99 | 332.81 | 134.93 |
| fmU | 213.61 | 315.73 | 118.54 |
| caU | 216.23 | 318.45 | 119.02 |
