| µcalc (D) gas phase | µexp (D) | |
| BTH | 1.4036 | 1.208; 1.252a |
| 2-SH_BTH | 0.9126 | 0.86b |
| 2-NH2_BTH | 1.9590 | 1.94b; 1.94c |
| 2-OH_BTH | 0.4995 | - |
| 2-SCH3_BTH | 0.6565 | - |