Chloro(5,10,15,20-tetraphenylporphyrinato)manganese(III) with 4/m Symmetry

The crystal structure of [Mn(TPP)Cl] in space group I4/m (where TPP is C₄₄H₂₈N₄) has been determined. The unit cell contains two full molecules, with one eighth of a molecule unique. An out-of-plane model for the Mn atom was applied, and all non-hydrogen atoms were refined anisotropically. The Mn-N distance is 2.002 (3) Å, the axial Mn-Cl is 2.297 (15) Å and the out-of-plane displacement of the Mn atom is 0.16 Å. The possibility of a reverse-doming porphyrin core conformation is mentioned briefly.

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