Bond Properties¶

The OEBondBase represents the bonds of a molecule. This section details some of its important and often used properties and methods.

Read/Write Bond Properties¶

Property Name	Type	Get Method	Set Method	See Also
Bond Order	unsigned int	`GetOrder`	`SetOrder`
Aromaticity	bool	`IsAromatic`	`SetAromatic`	Aromaticity Perception
Ring Membership	bool	`IsInRing`	`SetInRing`	Ring Perception
Integer Bond Type	int	`GetIntType`	`SetIntType`
Bond Type Name	string	`GetType`	`SetType`
Begin Atom	`OEAtomBase`	`GetBgn`	`SetBgn`
End Atom	`OEAtomBase`	`GetEnd`	`SetEnd`
Bond Chirality	bool	`IsChiral`	`SetChiral`	Stereochemistry Perception
Bond Stereo	unsigned int	`GetStereo`	`SetStereo`	Stereochemistry Perception

Read Only Bond Properties¶

Property Name	Type	Get Method	See Also
Begin Atom Index	unsigned int	`GetBgnIdx`	Atom, Bond, and Conformer Indices
End Atom Index	unsigned int	`GetEndIdx`	Atom, Bond, and Conformer Indices
Bond Index	unsigned int	`GetIdx`	Atom, Bond, and Conformer Indices
Bond Has Stereo	bool	`HasStereoSpecified`	Stereochemistry Perception
Bond Parent	`OEMolBase`	`GetParent`
Rotatable	bool	`IsRotor`	rotatable bond

Attach Generic Data to Bonds¶

Generic data (see Generic Data) can be attached to any object that derives from the OEBase class. The OEBondBase API provides the following methods, publicly inherited from OEBase, that allow the manipulation of generic data.

**Methods to manipulate generic data**¶
Method	Description
`SetData`	sets a generic data associating it with the given tag
`AddData`	adds a generic data associating it with the given tag
`HasData`	determines whether a molecule has any generic data with a given tag
`GetData`	returns the generic data associated with the given tag
`DeleteData`	deletes all generic data with the given tag
`Clear`	clears all stored generic data

Note

Generic data attached to a molecule or any of its atoms or bonds is automatically saved when the molecule is written into an .oeb file.