Table 7.
Vapor pressures at the average temperatures, p(⟨T⟩), sublimation entropies at the mean experimental temperature and pressure, ΔcrgSm(⟨T⟩, p(⟨T⟩), and the corresponding standard sublimation entropies, enthalpies and Gibbs energies adjusted to 298.15 K.
| Compound | p(⟨T⟩)/Pa | ΔcrgSm(⟨T⟩, p(⟨T⟩) | ΔcrgSm0(298.15 K, p°) | ΔcrgHm0(298.15 K) | ΔcrgGm0(298.15 K) |
|---|---|---|---|---|---|
| J·K−1·mol−1 | J·K−1·mol−1 | kJ·mol−1 | kJ·mol−1 | ||
| 5-Cl-1,10-phenanthroline | 0.0341 a | 320.3 ± 2.0 | 201.9 ± 4.3 | 113.8 ± 0.9 | 53.5 ± 2.2 |
| 0.00156 b | 344.6 ± 3.3 | 197.9 ± 5.9 | 112.2 ± 1.1 | 53.2 ± 2.9 | |
| average c | 199.9 ± 3.7 | 113.0 ± 0.7 | 53.4 ± 1.8 | ||
| 5-CH3-1,10-phenanthroline | 0.0554 a | 304.2 ± 1.9 | 190.4 ± 4.1 | 109.4 ± 0.9 | 52.6 ± 2.2 |
| 0.00247 b | 332.0 ± 2.5 | 189.4 ± 4.5 | 108.8 ± 0.9 | 52.3 ± 2.2 | |
| average c | 189.9 ± 3.0 | 109.1 ± 0.6 | 52.5 ± 1.6 | ||
| 5-CH3O-1,10-phenanthroline | 0.0446 a | 366.0± 4.0 | 252.5 ± 7.5 | 134.6 ± 1.7 | 59.3 ± 3.9 |
| 0.00287 b | 390.5 ± 4.9 | 251.5 ± 8.7 | 134.0 ± 1.8 | 59.0 ± 4.3 | |
| average c | 252.0 ± 5.7 | 134.3 ± 1.2 | 59.1 ± 2.9 | ||
| 5-CN-1,10-phenanthroline | 0.1286 a | 333.2 ± 2.4 | 230.6 ± 5.9 | 135.1 ± 1.5 | 66.4 ±3.3 |
| 0.00378 b | 359.2 ±2.6 | 224.1 ± 5.4 | 132.2 ± 1.2 | 65.4 ± 2.8 | |
| average c | 227.3 ± 4.0 | 133.7 ± 1.0 | 65.9 ± 2.2 | ||
| 5-NO2-1,10-phenanthroline | 0.3419 a | 318.6 ± 0.9 | 225.5 ± 4.8 | 133.3 ± 1.4 | 65.9 ± 2.9 |
| 0.0130 b | 352.2 ± 1.8 | 228.8 ± 4.6 | 134.2 ± 1.2 | 66.0 ± 2.5 | |
| average c | 227.3 ± 3.3 | 133.7 ± 0.8 | 66.0 ± 1.9 | ||
| 5- NH2-1,10-phenanthroline | 0.0679 a | 341.2 ± 2.3 | 234.6 ± 6.5 | 148.3 ± 1.7 | 78.3 ± 3.6 |
| 0.00322 b | 369.8 ± 4.8 | 235.4 ± 9.2 | 148.3 ± 2.1 | 78.1 ± 4.9 | |
| average c | 235.0 ± 5.6 | 148.3 ± 1.4 | 78.2 ± 3.0 |
a OD = 1 mm (series B); b OD = 3 mm (series A); c Uncertainty of the averages of the standard sublimation entropies, enthalpies and Gibbs energies (uav) are calculated by combining the single uncertainties of the two series (uA and uB, respectively) according to the following expression: uav = ½·[(uA)2 + (uB)2] 0.5.