Table 2.
Activation parameters for formation of the phosphoryl complexes, 2a–2g.
| Complex formed | Ea kJ mol−1 | lnA | R2 | ΔH‡ kJ mol−1 | ΔS‡ J mol−1 K−1 | R2 | ΔGf‡298 kJ mol−1 |
|---|---|---|---|---|---|---|---|
| TpiPrMoO(OPh)(OPMe3), 2a | 77.1 (±12.2) | 24.1 (±5.1) | 96.4 | 74.6 (±12.3) | −53.1 (±42.1) | 96.2 | 90.4 |
| TpiPrMoO(OPh)(OPMe2Ph), 2b | 45.1 (±3.9) | 11.4 (±1.7) | 99.2 | 43.0 (±4.0) | −157.2 (±14.0) | 99.1 | 89.8 |
| TpiPrMoO(OPh)(OPEt3), 2c | 50.9 (±1.9) | 12.5 (±0.8) | 99.6 | 48.4 (±1.9) | −149.2 (±6.4) | 99.5 | 92.9 |
| TpiPrMoO(OPh)(OPEt2Ph), 2d | 69.2 (±6.1) | 19.7 (±2.5) | 99.2 | 66.8 (±5.9) | −88.8 (±20.2) | 99.2 | 93.2 |
| TpiPrMoO(OPh)(OPBun3), 2e | 85.6 (±10.1) | 26.1 (±4.1) | 97.9 | 83.2 (±10.5) | −36.2 (±35.6) | 97.7 | 94.0 |
| TpiPrMoO(OPh)(OPMePh2), 2f | 75.9 (±3.8) | 21.8 (±1.5) | 99.6 | 73.4 (±3.7) | −71.9 (±2.3) | 99.5 | 94.8 |
| TpiPrMoO(OPh)(OPEtPh2), 2g | 85.0 (±3.3) | 24.4 (±1.3) | 99.9 | 82.5 (±3.3) | −50.3 (±0.1) | 99.8 | 97.5 |