Fig. 1
From: Proton mediated spin state transition of cobalt heme analogs

ORTEP diagrams. a [Co(TPP)(2-MeHIm)]. b [Co(TPP)(2-MeIm−)]−. c [Co(TTP)(2-MeHIm)] (one of the two orientations is shown for the axial imidazole). d [Co(TTP)(2-MeIm−)]−. Thermal ellipsoids of all atoms are contoured at the 50% probability level. Hydrogen atoms, [K(222)]+ and solvent molecules are not shown for clarity