Dianionic and trianionic macrocycles in cobalt N-confused porphyrin complexesElectronic supplementary information (ESI) available: Absorption spectra for 1, 2 and 4. See http://www.rsc.org/suppdata/cc/b4/b404261a/

We report the syntheses of cobalt N-confused porphyrins; this work completes the series of the late first-row transition metals that have been incorporated into the core of N-confused porphyrin, and in these compounds the macrocycles can act as either a -2 or -3 anion.