Chlorido(pyridine-κN)(5,10,15,20-tetra­phenyl­porphyrinato-κ⁴N)cobalt(III) chloro­form hemisolvate

In the title complex, [CoCl(C₄₄H₂₈N₄)(C₅H₅N)]·0.5CHCl₃ or [Co^III(TPP)Cl(py)]·0.5CHCl₃ (where TPP is the dianion of tetra­phenyl­porphyrin and py is pyridine), the average equatorial cobalt–pyrrole N atom bond length (Co—N_p) is 1.958 (7) Å and the axial Co—Cl and Co—N_py distances are 2.2339 (6) and 1.9898 (17) Å, respectively. The tetra­phenyl­porphyrinate dianion exhibits an important nonplanar conformation with major ruffling and saddling distortions. In the crystal, mol­ecules are linked via weak C—H...π inter­actions. In the difference Fourier map, a region of highly disordered electron density was estimated using the SQUEEZE routine [PLATON; Spek (2009), Acta Cryst. D65, 148–155] to be equivalent to one half-mol­ecule of CHCl₃ per mol­ecule of the complex.