(a) Magnification of the STM image of Fe4SMe/Pb(111) in Fig. 2a (main text). Orange and pink lines indicate the molecular easy axis projections on the surface. (b) Scheme of the 12 observed orientations of the easy axis projection with respect to the crystallographic directions of the Pb(111) surface. The projection of the easy axis lies along the main crystallographic directions of Pb(111), orange lines, or at 30° from them, pink lines (only \([\bar 110]\) is shown in the STM image for convenience). (c) Low Energy Electron Diffraction (LEED), 60 eV, of the clean Pb(111) crystal used to identify the main crystallographic directions of the substrate, x axis corresponding to the STM scanning direction.