Spyros P. PERLEPES

Associate Professor (Inorganic Chemistry)

Diploma  in Chemistry :

University of Patras, Patras, Greece (1976).

Ph.D in Chemistry :

University of Patras, Patras, Greece (1979).

The research interests of Dr. S. P. Perlepes cover the synthesis, characterization and reactions of transition - and lanthanide/actinide - metal complexes with various oxygen- and nitrogen-based ligands.We are particularly interested in the systematic investigation of the coordination chemistry of metal-corrosion inhibitors, mainly of the benzotriazole type. Our interest in this chemistry is two fold : (i) to generate well characterized complexes which could serve as models for benzotriazolate surface complexes, and (ii) to investigate the possibility of creating corrosion inhibitors more efficient than benzotriazole.Two of the driving forces behind our interests in lanthanide chemistry are : (i) the possibility of preparing dinuclear Ln(III) complexes witch could be considered as the archetype of exchange-coupled systems, and (ii) the use of lanthanide complexes for the synthesis of mixed-metal Cu(II)-Ln(III) molecular clusters or infinite polymers; these compounds serve as precursors and models for high- technology materials.We are also involved in a project designed to develop methodology for the rational synthesis of higher nuclearity 3d metal complexes and to study their magnetic properties and reactivity.

1.      A. Panagiotopoulos, Th. Zafiropoulos, S. P. Perlepes, E. Bakalbassis, I. Masson-Ramade, O. Kahn, A. Terzis and C. P. Raptopoulou.“Molecular Structure and Magnetic Properties of Acetato-Bridged Lanthanide(III) Dimers”.Inorg. Chem., 34, 4918 (1995).

2.     V. Tangoulis, C. P. Raptopoulou, V. Psycharis, A. Terzis, K. Skorda, S. P. Perlepes, O. Cador, O. Kahn and E. G. Bakalbassis. " Ferromagnetism in an Extended Three-Dimensional, Diamond-like Copper(II) Network: A New Copper(II)/1-Hydroxybenzotriazolato Complex Exhibiting Soft-Magnet Properties and Two Transitions at 6.4 and 4.4 K". Inorg. Chem. 39, 2522 (2000).

3.      G. S. Papaefstathiou, C. P. Raptopoulou, A. Tsohos, A. Terzis, E. G. Bakalbassis and S. P. Perlepes. "Alcoholysis of 2,2'-Pyridil, (2-C₅H₄N)C(O)C(O)(2-C₅H₄N), in the Presence of Copper(II): A Family of Planar Pentanuclear Copper(II) Complexes Stabilized by [(2-C₅H₄N)C(O)(OR)C(O)(OR)(2-C₅H₄N)]^2- and Carboxylate Ligands". Inorg. Chem. 39, 4658 (2000).

4.     G. S. Papaefstathiou, S. P. Perlepes, A. Escuer, R. Vicente, M. Font-Bardia and X. Solans. "Unique Single-Atom Binding of Pseudohalogeno Ligands to Four Metal Ions Induced by their Trapping into High Nuclearity Cages". Angew. Chem. Int. Ed. In press.