title: Stereochemistry of 2D molecular crystallization.
abstract: Different stereochemical aspects of molecular recognition in two-dimensional crystallization on metal surfaces are discussed. Scanning tunneling microscopy, a powerful tool with submolecular resolution capabilities, provides detailed insight into the implications of molecular geometry for the two-dimensional crystal lattice. The examples presented here include a homo- to heterochiral phase transition, tiling with pentagonal molecules, chiral restructuring of a metal surface and diastereomeric recognition between enantiomers of different molecular species via polar forces as well as van der Waals interactions.
authors.affiliation: Empa - Swiss Federal Laboratories for Materials, Science and Technology, Laboratory for Nanoscale Materials Science, Überlandstrasse 125, CH-8600 Dübendorf, Switzerland; Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland. karl-heinz.ernst@empa.ch.
authors.forename: Karl-Heinz
authors.initials: KH
authors.lastname: Ernst