* Personal information:
Born in São Paulo, São Paulo, Brazil on November 26th, 1958; married, two daughters. 

* Education:
BS in Chemistry (1980), MS (1984), Ph.D. (1993) - Univ. São Paulo, S. P.

* Occupation:
Laboratory Specialist - Instituto de Química, Univ. São Paulo.
Professor of Chemistry - FCBEE, Univ. Presbiteriana Mackenzie.

* Current Research Interest:
Interaction of ruthenium acetate clusters containing N-heterocyclic ligands with nitric oxide. 

* Publications:
12. Toma, H. E., Araki, K., Alexiou, A. D. P., Nikolaou, S., Dovidauskas, S., "Monomeric and extend oxo-centered triruthenium clusters", Coord. Chem. Rev., 2001, 219-221, 225-272.
11. Araki, K., Dovidauskas, S., Winnischofer, H., Alexiou, A. D. P., Toma, H. E., " A new highly efficient tetra-electronic catalyst based on a cobalt porphyrin bound to four m3-oxo-rutheniuma cetate clusters", J. Electroanal. Chem. 2001, 498, 152-160.
10. Alexiou, A. D. P., Dovidauskas, S., Toma, H. E., "Properties and applications of trinuclear ruthenium carboxylate clusters", Quim. Nova, 2000, 23, 785-793.
9. Toma, H. E., Alexiou, A. D. P., Nikolaou, S., Dovidauskas, S., "¹³C NMR spectra of triangular m-oxoruthenium acetate clusters revisited: HETCOR study of two pyridine and 4,4'-bipyridine derivative", Magn. Reson. Chem., 1999, 37, 322-324.
8. Alexiou, A. D. P., Toma, H. E., "NMR spectroscopic correlations for a series of triangular m-oxoruthenium acetate clusters containing substituted pyridine ligands", J. Chem. Research (S), 1997, 338-339.
7. Araújo jr., J., Nikolau, S., Alexiou, A. D. P., Toma, H. E., "Synthesis of a trinuclear ruthenium cluster containing pyridine and 4-acetylpyridine ligands and its immobilization on functionalized silica", Monatsh. Chem. 1997, 128, 759-766.
6. Toma, H. E., Alexiou, A. D. P., "Synthesis and characterization of a dodecanuclear ruthenium pyrazine cluster", J. Braz. Chem. Soc. 1995, 6, 267-270.
5 Toma, H. E., Alexiou, A. D. P., "Nuclear magnetic resonance and spectroelectrochemical characterization of a supramolecular tetrameric ruthenium cluster", J. Chem. Research (S),1995, 134-135.
4. Toma, H. E., Alexiou, A. D. P., "Dynamic electrochemical behavior of a trinuclear m-oxo ruthenium acetate cluster containing pyridine and dimethylsulphoxide ligands", Electrochim. Acta 1993, 38, 975-980.
3. Alexiou, A. D. P., Toma, H. E., "Electrochemical parametrization of ruthenium cluster redox potentials", J. Chem. Research (S), 1993, 464-465. 
2. Kuya, M. K., Pereira, A. D., Giesbrecht, E., Sone, K., "Complexes of N, N´-dimethylethyleneurea and N, N´-dimethylpropyleneurea with Co(II) halides, An. Acad. brasil. Ciênc., 1984, 56, 147-154.
1. Sone, K., Kikuchi, M., Ogasawara, K., Kuya, M. K., Pereira, A. D., "Thermal decomposition of cobalt(II) halide complexes of tetramethylurea and related cyclic ureas", Bull. Chem. Soc. Jpn., 1984, 57, 3005-3006.