1. The Lundbeck Foundation Center for Theoretical Chemistry, Center for Oxygen Microscopy and Imaging, Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark, Institute of Physics, University of Szczecin, Wielkopolska 15, 70-451 Szczecin, Poland, and Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey