1. Faculty of Chemistry, University of Wroclaw, F. Joliot − Curie 14, 50-383 Wroclaw, Poland
2. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Joliot-Curie 6, 141-980 Dubna, Russia
3. Faculty of Chemistry, University of Opole, Opole PL-45052, Poland
4. Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznan′, Poland
5. Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science at Heinz Maier-Leibnitz Zentrum, Lichtenbergstr. 1, 85748 Garching, Germany