Table 1.
Dissociation Energy (in eV) of Fragmentation Channels of [Mo4O13]2− Observed in the Experiment, along with Dissociated Molecules used to Calculate the Dissociation Energy. Calculated Using the ωB97XD, B3LYP, and M06 Functionals along with the def2TZVP Basis Set. All Listed Ions were Observed during the CID Experiment unless Indicated Otherwise
Precursor | Fragment 1 | Fragment 2 | Fragment 3 | E ωB97XD | E B3LYP | E M06 | ||||
---|---|---|---|---|---|---|---|---|---|---|
1.1 | [Mo4O13]2− | → | [Mo3O10]2− | + | [MoO3] | 4.29 | 3.94 | 4.37 | ||
1.2 | [Mo4O13]2− | → | [Mo2O7]2− | + | [MoO3] | + | [MoO3] | 9.05 | 8.53 | 8.98 |
1.2’ | [Mo4O13]2− | → | [Mo2O7]2− | + | [Mo2O6] | 4.22 | 3.92 | 4.31 | ||
1.3 | [Mo4O13]2− | → | [Mo2O7]− | + | [Mo2O6]− | 2.57 | 2.14 | 2.41 | ||
1.4 | [Mo4O13]2− | → | [Mo2O6]− | + | [MoO4]− | + | [MoO3] | 6.41 | 5.78 | 6.25 |
1.5 | [Mo4O13]2− | → | [Mo2O7]− | + | [MoO3]− | + | [MoO3] | 7.62 | 7.00 | 7.50 |
1.6 | [Mo4O13]2− | → | [Mo3O9]− | + | [MoO4]− | 2.06 | 1.70 | 2.14 | ||
1.7 | [Mo4O13]2− | → | [Mo3O10]− | + | [MoO3]− | 3.75 | 3.41 | 3.68 | ||
1.8 | [Mo4O13]2− | → | [Mo3O10]− | + | [MoO3] | + | e− | 6.84 | 6.62 | 6.65 |
1.9 | [Mo4O13]2− | → | [Mo2O8]− | + | [Mo2O5]−a | 6.54 | 6.12 | 6.34 | ||
1.10 | [Mo4O13]2− + O2 | → | [Mo2O8]− | + | [Mo2O7]− | 1.73 | 1.33 | 1.55 | ||
1.11 | [Mo4O13]2− + H2O | → | [HMo2O7]− | + | [HMo2O7]− | − 1.18 | − 1.33 | − 1.14 |
a[Mo2O5]− was not observed in the experiment