An unusual bonding mode for a porphyrin ligand is seen in the tellurium porphyrin complex prepared by treatment of TeCl4 with dilithio meso-tetra(p-tolyl)porphyrin [Li2(ttp)]. The structure of [Te(ttp)Cl2] (see picture) has a five-coordinate, square-pyramidal geometry involving a distorted tridentate porphyrin ligand and cis-dichloride ligands.
No takes yet. Share an insight, caveat, or question.
Grubisha et al. (2001) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: