Table 1.
Mesomorphic temperature of transitions (T °C), enthalpy of transition ΔH, kJ/mole, and normalized entropy of transition ΔS/R for investigated set, Inx.
| Comp | X | T Cr-I | ΔHCr-I | T Cr-SmC | ΔHCr-SmC | T Cr-N | ΔHCr-N | T SmC-N | ΔHSmC-N | T N-I | ΔHN-I | ΔS/R |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| I8a | -OCH3 | - | - | 96.3 | 45.15 | - | - | 116.2 | 2.80 | 175.2 | 1.94 | 0.52 |
| I8b | -CH3 | - | - | - | - | 127.9 | 51.76 | - | - | 160.8 | 2.13 | 0.59 |
| I8c | -H | 105.3 | 57.64 | - | - | - | - | - | - | - | - | - |
| I8d | -Cl | - | - | - | - | 123.7 | 46.70 | - | - | 224.3 | 2.09 | 0.51 |
| I8e | -F | - | - | - | - | 96.3 | 39.38 | - | - | 177.3 | 1.23 | 0.33 |
| I16a | -OCH3 | - | - | 87.6 | 48.78 | - | - | 128.5 | 2.90 | 164.5 | 1.48 | 0.41 |
| I16b | -CH3 | - | - | - | - | 106.9 | 44.6 | - | - | 135.7 | 1.62 | 0.48 |
| I16c | -H | 101.6 | 59.87 | - | - | - | - | - | - | - | - | - |
| I16d | -Cl | - | - | - | - | 116.9 | 46.32 | - | - | 220.2 | 1.87 | 0.46 |
| I16e | -F | - | - | - | - | 103.1 | 42.30 | - | - | 137.1 | 1.36 | 0.40 |
Cr-N refers to the solid-to-nematic phase. N-I refers to the nematic-to-isotropic liquid phase.