1. Department of Inorganic Chemistry, Donetsk National University, 24 Universitetskaya, Donetsk 83001, Ukraine
2. Department of Inorganic Chemistry, Ivan Franko National University of Lviv, 6 Kyryla i Mephodiya Street, Lviv 79005, Ukraine
3. Department of Chemistry and Geology, Minnesota State University, 241 Ford Hall, Mankato, MN 56001, USA