Fig. 4
From: Selective on-surface covalent coupling based on metal-organic coordination template

Molecular conformers and assembled structures in the presence of Fe. a STM overview of the chain structures observed when the sample held at 100 K. b Close-up inspection of the chains. Most molecules are cis-D2h conformers. c Tentative structural model. Fe coordination centers are represented by purple spheres. Scale bars: (a) 10 nm; (b) 3 nm. Data acquisition conditions (T = 100 K): (a, b and c) −1.8 V, 0.2 nA