| Name | Formula | Dipole momentμ debye |
|---|
| 2,3-dichloro-2-methylpropanenitrile | C4H5Cl2N | 3.49 |
| ethyl trichloroacetate | C4H5Cl3O2 | 2.60 |
| 1,1,1,3,3-pentachlorobutane | C4H5Cl5 | 1.38 |
| 2-fluoro-1,3-butadiene | C4H5F | 1.42 |
| ethyl trifluorothioacetate | C4H5F3OS | 3.07 |
| ethyl trifluoroacetate | C4H5F3O2 | 3.00 |
| (E)-2-butenenitrile | C4H5N | 4.50 |
| (Z)-2-butenenitrile | ⋮ | 4.08 |
| 2-cyanopropene | ⋮ | 3.69 |
| 3-butenenitrile | ⋮ | 3.42 |
| cyclopropanecarbonitrile | ⋮ | 3.66 |
| isocyanocyclopropane | ⋮ | 4.03 |
| pyrrole | ⋮ | 1.71 |
| 2-methyl-1,3-oxazole | C4H5NO | 1.37 |
| 4-methyl-1,3-oxazole | ⋮ | 1.08 |
| 4-methylisoxazole | ⋮ | 3.58 |
| 5-methyl-1,3-oxazole | ⋮ | 2.16 |
| 1-thiocyanatopropan-2-one | C4H5NOS | 4.07 |
| 3-isothiocyanatopropene | C4H5NS | 3.30 |
| 4-aminopyrimidine | C4H5N3 | 3.95 |
| 1,2-butadiene | C4H6 | 0.40 |
| 1,3-butadiene | ⋮ | 0.00 |
| 1-butyne | ⋮ | 0.80 |
| 1-methylcyclopropene | ⋮ | 0.84 |
| cyclobutene | ⋮ | 0.13 |