(2.2.2-Cryptand)potassium bis­(cyanato-κN)(5,10,15,20-tetra­phenyl­por­phy­rin­ato-κ⁴N)cobaltate(III) chloro­benzene hemisolvate

In the title compound, [K(C₁₈H₃₆N₂O₆)][Co(NCO)₂(C₄₄H₂₈N₄)]·0.5C₆H₅Cl or [K(2,2,2-crypt)⁺][Co^III(NCO)₂(TPP)⁻]·0.5C₆H₅Cl, the Co^III ion is octa­hedrally coordin­ated by two axial N-bonded NCO⁻ anions and four pyrrole N atoms of the porphyrin. There is a major ruffling distortion of the porphyrin: the dihedral angles between trans pyrrole rings are 34.32 (14) and 34.72 (14)°. The potassium ion is coordinated by the six O atoms and two N atoms of the cryptand-222 mol­ecule and a weak K—O [3.407 (3) Å] bond to one of the cyanate O atoms also occurs. The packing also features weak C—H...O and C—H...π inter­actions. The contribution to the scattering of the disordered chloro­benzene solvent mol­ecules was removed with the SQUEEZE function in PLATON [Spek (2009). Acta Cryst. D65, 148–155].