Structure-Property Relationships for a Series of Ruthenium(II) Polypyridyl Complexes Elucidated through Raman Spectroscopy

Figure 5

Graphical representation of the “donor-acceptor” description of electron density with end-group variation, showing Br to NO₂ for phen (a) and biq (b). Blue arrows indicate the electron delocalisation, and red arrows indicate the ability of the functional group to push back against the delocalisation.

(a)

(b)