| Property Name | Type | Get Method | Set Method |
| Bond Order | int | GetOrder | SetOrder |
| Aromaticity | 0 or 1 | IsAromatic | SetAromatic |
| Ring Membership | 0 or 1 | IsInRing | SetInRing |
| Integer Bond Type | int | GetIntType | SetIntType |
| Bond Type Name | string | GetType | SetType |
| Begin Atom | OEAtomBase | GetBgn | SetBgn |
| End Atom | OEAtomBase | GetEnd | SetEnd |