1. Department of Organic Chemistry, Faculty of Chemistry; Uzhgorod National University; Fedinets 53/1 Uzhgorod Ukraine
2. Laboratory of X-ray Structural Investigations; Institute of Organic Chemistry NAS Ukraine; Murmanska 5 Kyiv Ukraine
3. Laboratory of Organic Chemistry, Department of Chemistry; Kyiv National University; Volodimirska 64 Kyiv Ukraine