The Resonance Plugin generates all resonance structures of a molecule. The major contributors of the resonance structures can be calculated separately.
Fig. 1 Calculated resonance structures of diazomethane
Fig. 2 Canonical resonance structure of diazomethane
The following options can be adjusted in the Resonance Options panel:
Max. number of structure: maximize the number of structures to display (decrease calculation time).
Take canonical form: displays the canonical structure of the molecule.
Take major contributors: selects the most relevant structures.
Single fragment mode : if checked (default), the results are displayed in separate windows, otherwise the calculation handles unlinked molecules together and the results appear in the same window.
Fig. 3 Resonance Options window