1. Laboratory of Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland
2. National Center for Competence in Research-Catalysis (NCCR Catalysis), ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
3. IBM Research Europe, 8803 Rüschlikon, Switzerland
4. National Center for Competence in Research-Catalysis (NCCR Catalysis), IBM Research, 8803 Rüschlikon, Switzerland