|
Bond
|
Description
|
|
|
Single bond, unspecified stereochemistry.
|
|
|
Single bond, "down" stereochemistry (into the plane of the paper, away from the viewer), from the first drawn atom to the second drawn atom.
|
|
|
Single bond, "up" stereochemistry (out of the plane of the paper, toward the viewer), from the first drawn atom to the second drawn atom.
|
|
|
Single bond, mixture of "up" and "down" stereochemistries in some unspecified proportion.
|
|
|
Dative bond. Often used to indicate polar bonds, such as the N-O bond in pyridine N-oxide.
|
|
|
Double bond, with cis/trans stereochemistry as drawn.
|
|
|
Double bond, with cis/trans stereochemistry unknown.
|
|
|
Tautomeric bond, either single or double according to rules of tautomerism.
|
|
|
Aromatic bond, part of a delocalized resonance system.
|
|
|
Triple bond.
|
|
|
Quadruple Bond.
|
