Table 2. Values of NBO Charges (Units of e) on the Key Atoms of O7 and O9 in Reactant R2 and Intermediates α-6 and β-6.
| O7 | O9 | |
|---|---|---|
| R2 | –0.606a | –0.524 |
| α-6 | –0.924 | –0.597 |
| β-6 | –0.692 | –0.912 |
All of the NBO charges were calculated at the M06-2X-D3/6-311++G(2df, 2pd)/IEF-PCMchloroform//M06-2X/6-31G(d, p)/IEF-PCMchloroform level.