1. Department of Inorganic and Analytical ChemistryUniversity of Debrecen Egyetem tér 1 H-4032 Debrecen Hungary
2. MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research GroupUniversity of Debrecen Egyetem tér 1 H-4032 Debrecen Hungary
3. CNR-Istituto di Cristallografia (IC), s.s. Catania Via Paolo Gaifami 18. 95126 Catania Italy