1. Institute of Organic
Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
2. Institute of Inorganic Chemistry, X-ray Crystallography, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
3. EPSRC National Crystallography
Service, School of Chemistry, University of Southampton, University
Road, SO17 1BJ Southampton, United Kingdom