The deposition of m1 has been performed onto Au(111) and Au(110) substrates held at RT. Under such conditions, the molecules remain intact on both surfaces and self-assemble into structures as shown in Fig. . On Au(111), the molecules show a remarkable tendency to form three-fold symmetric self-assembled trimers (Fig. ) in which the molecules are aligned along the [1-10] and its two equivalent substrate directions, with the halogen-functionalized side facing towards the trimer's center (Fig. ).