1. Institute of Organic Chemistry Justus Liebig University Heinrich-Buff-Ring 17 35392 Giessen Germany
2. Center of Material Research (LaMa/ZfM) Justus Liebig University Heinrich-Buff-Ring 16 35392 Giessen Germany
3. Interdisciplinary Center for Scientific Computing Heidelberg University Im Neuenheimer Feld 205 69120 Heidelberg Germany