Frank W. Heinemann,a Živadin D. Bugarčić (1954–2017),b and Tanja V. Soldatovićc@
aDepartment of Chemistry and Pharmacy, Friedrich-Alexander-University of Erlangen-Nürnberg, 91058 Erlangen, Germany
bDepartment of Chemistry, Faculty of Science, University of Kragujevac,34000 Kragujevac, Serbia
cDepartment of Chemical-Technological Sciences, State University of Novi Pazar, 36300 Novi Pazar, Serbia