1. Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, Egyetem tér 1, Debrecen H-4010, Hungary
2. Research group of Homogeneous Catalysis, MTA-DE, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary
3. Outotec (Sweden) AB, Gymnasievägen 14, P.O. Box 745, SE-031 27 Skellefteå, Sweden
4. Department of Chemistry, The Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden
5. Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
6. Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden