Keywords: Cyclopentadienide-resonance-2D-skeletal.png Resonance structures of the cyclopentadienide anion Cp<sup> ˆ’</sup> i e C<sub>5</sub>H<sub>5</sub><sup> ˆ’</sup> Structure drawn in http //www cambridgesoft com/software/ChemBioDraw/ ChemBioDraw Ultra 12 0 Own 2010-08-16 Ben Mills Benjah-bmm27 Images by Ben Mills Cyclopentadienide ion Mesomerism |