Metalloporphyrins are a group of compounds consisting of a metal ion coordinated to a porphyrin ligand. Porphyrins are heterocyclic macrocycles derived from four pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH-). The metal ion is typically situated at the center of the porphyrin ring, forming a stable structure. Common examples include iron, cobalt, and manganese porphyrins.
