Comment on “Chemical versus van der Waals Interaction: The Role of the Heteroatom in the Flat Absorption of Aromatic Molecules ${\mathbf{C}}_6{\mathbf{H}}_6$, ${\mathbf{C}}_5{\mathrm{NH}}_5$, and ${\mathbf{C}}_4{\mathbf{N}}_2{\mathbf{H}}_4$ on the Cu(110) Surface”

A Comment on the Letter by N. Atodiresei et al., Phys Rev. Lett. 102, 136809 (2009). The authors of the Letter offer a Reply.

Figure 1

Top and half-side views of our (left) and the authors’ (right) configurations, together with relaxed N-Cu and C-Cu bond lengths and molecule-substrate distances.