Bernardo Cardoso

    Ongoing Project

  • 3d metal-sulfoxide binding: S or O?

  • 3d metals are known to bind sulfoxides predominantly by the O atom, in contrast with 4d and 5d transition metals which show some ambivalence between O and S binding (Re, Ru, Os, Rh, Ir, Pd, Pt) as expected from the larger soft acid character of the latter.

    Sulfoxide molecules are widely studied in catalytic reactions as substrates, products or catalyst ligands. The recent discovery of a new S-bonded Fe(II)-DMSO complex - [(Cp*-NHC)Fe(CO)(DMSO)][OTf], which acts as catalyst in sulfoxide reduction, raises questions on the mechanistic pathway and the nature of the binding between 3d metals sulfoxides. This led us to explore the nature of sulfoxide binding in the known 3d metal-S binding cases - Cr(0), Cr(II), Co(I), Fe(I), Fe(II), Ni(0) and Ni(II), all of which have reported X-ray structures.



  • 2011-2013: MSc degree in Chemistry, (awarded with the Euromaster Label), Faculdade de Ciências, Universidade de Lisboa. The master thesis was developed at Université Pierre et Marie Curie (UPMC), via the ERASMUS mobility program (2012-2013).

  • 2008-2011: BSc degree in Chemistry, (awarded with the Eurobachelor Label), Faculdade de Ciências, Universidade de Lisboa. Graduated top of the class.

  • Awards

  • 2012: “Prémio Fundação Jacqueline Dias de Sousa”, Fundação Jacqueline Dias de Sousa awards the top graduated student in the Chemistry BSc degree, at Faculdade de Ciências.

  • Publications

  • J. M. S. Cardoso, A. Fernandes, B. de P. Cardoso, M. D. Carvalho, L. P. Ferreira, M. J. Calhorda, and B. Royo "Cationic Half-Sandwich Iron(II) and Iron(III) Complexes with N-Heterocyclic Carbene Ligands", Organometallics, 2014, Accepted, DOI: 10.1021/om500528p

  • Posters

  • [1] Fe(III) complexes bearing salEen ligands as potential MRI contrast agents, B. P. Cardoso, A. I. Vicente, J. B. J. Ward, P. J. Sebastião, F. V. Chávez, M. J. Calhorda, P. N. Martinho, Liquids 2014 - 9th Liquid Matter Conference, July 2014, Lisboa, Portugal.

  • [2] The Curious Case of 3d Metal/Sulfoxide Binding, B. P. Cardoso, M. J.Calhorda, J. M. S. Cardoso, B. Royo, 10th Inorganic Chemistry Conference, April 2014, Costa da Caparica, Portugal.

  • [3] New complexes with bidentate nitrogen ligands for catalysis, M. J. Calhorda, B. Cardoso, S. Realista, V. Félix, Meeting of the Sociedade Portuguesa de Química, July 2011, Braga, Portugal.