Table 2.
Calculated threshold energies (in units of eV) of anionic fragments from the reaction Fe(CO)4(η2-C4H6O2) + e−.
| m/z | Ion | Neutral fragments | E th |
|
| |||
| 254 | Fe(CO)4(η2-C4H6O2)− | — | −1.35a |
| 226 | Fe(CO)3(η2-C4H6O2)− | CO | −1.40a |
| 198 | Fe(CO)2(η2-C4H6O2)− | 2 × CO | −0.02a |
| 170 | Fe(CO)(η2-C4H6O2)− | 3 × CO | 2.23 |
| 168 | Fe(CO)4− | (C4H6O2) | −1.42a |
| 142 | Fe(η2-C4H6O2)− | 4 × CO | 4.35 |
| 142 | Fe(CO)3H2− | (C4H4O2), CO | 2.08 |
| 140 | Fe(CO)3− | (C4H6O2), CO | 0.36 |
| 127 | Fe(CO)2CH3− | (C3H3O2), 2 × CO | 4.49 |
| 114 | (C4H6O2)CO− | Fe(CO)3 | 2.87 |
| 114 | Fe(CO)OCH2− | 3 × CO, C3H4O | 3.44 |
| 114 | Fe(CO)2H2− | 2 × CO, (C4H4O2) | 3.48 |
| 112 | Fe(CO)2− | 2 × CO, (C4H6O2) | 3.39 |
| 86 | C4H6O2− | Fe(CO)4 | 1.29 |
| 84 | Fe(CO)− | 3 × CO, (C4H6O2) | 5.00 |
| 56 | Fe− | 4 × CO, (C4H6O2) | 7.68 |
aExothermic reaction.