1. Institute for Single Crystals; National Academy of Sciences of Ukraine; av. Lenina 60 Kharkiv 61001 Ukraine
2. Institute of Inorganic Chemistry; University of Duisburg Essen; Universitaetsstr. 5-7 D-45117 Essen Germany
3. Institute for Single Crystals Science and Technology Complex; National Academy of Sciences of Ukraine; av. Lenina 60 Kharkiv 61001 Ukraine