1. 1Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15, Bratislava 4, Slovak Republic
2. 2Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-845 36, Bratislava, Slovak Republic
3. 3Laboratory of Crystallography, DPMC-MaNEP, University of Geneva, CH-1211, Geneva, Switzerland
4. 4Swiss-Norwegian Beam Lines at ESRF, BP-220, 38043, Grenoble, France