Università degli Studi di Trieste

Dipartimento di Scienze Chimiche

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                             Welcome!

Group Members:

Prof. Renata Dreos

Patrizia Siega, Ph. D.

Former Group Members:

Prof. Giovanni Tauzher

Alessandro Felluga, Ph. D.

 

Research Interests:

Bioinorganic Chemistry

Supramolecular Chemistry

 

Address:

Dipartimento di Scienze Chimiche

Via Licio Giorgieri 1
Università di Trieste
34127 Trieste -  Italia

 

Recent publications:

  • R. Dreos, L. Randaccio e P. Siega, "Supramolecules from Cobaloximes", Inorg. Chim. Acta, 362, 682-690 (2009).
  • T. Andruniów, M. Jaworska, P. Lodowski, M. Z. Zgierski, R. Dreos, L. Randaccio, e P. M. Kozlowski, "Time-dependent density functional theory study of cobalt corrinoids: Electronically excited states of coenzyme B12", J. Chem. Phys., 131, 105105 (2009).
  • L. Mechi, P. Siega, R. Dreos, E. Zangrando e L. Randaccio, "Crystal Structures and Solution Behavior of Paramagnetic Trinuclear Mixed-Valence Cobalt Complexes with a Salen-Type Ligand", Eur. J. Inorg. Chem.,2629-2638 (2009).
  • R. Dreos, L. Randaccio, P. Siega e V. Vrdoljak, "Intramolecular Cyclization Reactions in Haloalkyl-Cobalt Complexes with Macrocyclic Equatorial Ligands", Croat. Chem. Acta, 82, 455-461 (2009).
  • P. Siega, J. Wuerges, F. Arena, E. Gianolio, S. N. Fedosov, R. Dreos, S. Geremia, S. Aime e L. Randaccio, "Release of Toxic Gd3+ Ions to Tumor Cells by Vitamin B12 Bioconjugates", Chem. Eur. J., 15, 7980-7989 (2009).
  • S. J. Moore, P. Siega, R. J. Lachicotte, L. Randaccio, P. A. Marzilli, e L. G. Marzilli, "Effects of Equatorial Ligand Bulk on the Orientation of Axial Ligands in Methyl Organocobalt B12 Models Assessed by X-Ray and NMR Methods", Inorg. Chim. Acta, 362, 993-1002 (2009).
  • T. Andruniow, M. Jaworska, P. Lodowski, M. Z. Zgierski, R. Dreos, L. Randaccio e P. M. Kozlowski, "Electronically Excited States of Methylcobalamin", J. Chem. Phys., 129, 085101 (2008).
  • R. Dreos e P. Siega, "Kinetics and mechanism of metallacyclization in a chloromethylcobalt complex with a salen-type ligand", Organometallics, 25, 5180 (2006).
  • R. Dreos, L. Mechi, L. Randaccio, P. Siega, E. Zangrando e R. Ben Hassen "Synthesis and X-ray crystal structure of a new μ-hydroxo dinuclear cobalt complex containing one cis-β folded and one planar salen moiety", J. Organometallic. Chem., 691, 3305 (2006).
  • P. Siega, L. Randaccio, P. A. Marzilli, and L. G. Marzilli, "Metal Coordination by Sterically Hindered Heterocyclic Ligands, Including 2-Vinylpyridine, Assessed by Investigation of Cobaloximes", Inorg. Chem., 45, 3359 (2006).
  • R. Dreos, P. Siega, S. Scagliola, L. Randaccio, G. Nardin, C. Tavagnacco, e M. Bevilacqua, "Synthesis, Characterization and Electrochemical Properties of Dinuclear Complexes Assembled from Asymmetric Co(III) Bis(dioximates) and Boronic Acids", Eur. J. Inorg. Chem. 3936 (2005).
  • R. Dreos, L. Mechi, G. Nardin, L. Randaccio, e P. Siega, "Alternative Cocrystallization of "Almost" Enantiomers and True Enantiomers in Some Cis β Organocobalt Salen-type Complexes with α-Amino Acids", J. Organometallic. Chem., 690, 3815 (2005).
  • R. Dreos, G. Nardin, L. Randaccio, P. Siega, S. Scagliola, and G. Tauzher, "The Effect of the Steric Bulk of the Ligand on the Geometry of the Species Self-Assembled from Co(III) Bis(dioximates) and Boronic Acids", Eur. J. Inorg. Chem. 4266 (2004).
  • R. Dreos, G. Nardin, L. Randaccio, P. Siega and G. Tauzher, "Synthesis, Characterization, and Solution Behavior of Optically Active Cis ß Organocobalt Salen Complexes with L-Amino Acids", Inorg. Chem., 43, 3433 (2004).
  • G. Tauzher, R. Dreos, A. Felluga, N. Marsich, G. Nardin and L. Randaccio, "Di-Organocobalt Complexes of Macrocyclic Ligands", Inorg. Chim. Acta, 357, 177 (2004).
  • Basam M. Alzoubi, M. S. A. Hamza, A. Felluga, L. Randaccio, G. Tauzher and R. van Eldik, "Kinetics and Mechanism of Axial Ligand Substitution of Alkyl Cobaloximes by Substituted Pyridines in Different Solvents", Eur. J. Inorg. Chem., 653 (2004).
  • R. Dreos, G. Nardin, L. Randaccio, P. Siega, G. Tauzher, "New ß Cis Folded Organocobalt Derivatives with a Salen-Type Ligand", , Inorg. Chem., 42, 6805 (2003).
  • G. Tauzher, R. Dreos, A. Felluga, G. Nardin, L. Randaccio and M. Stener,  "Intramolecular and Intermolecular O-H-O Hydrogen Bond in Some Nickel(II) Complexes with Tridentate Amino-oxime Ligands", Inorg. Chim. Acta, 355, 361 (2003).
  • Basam M. Alzoubi, M. S. A. Hamza, A. Felluga, L. Randaccio, G. Tauzher and R. van Eldik, "Coenzime B12 model studies. Kinetics of axial ligation of alkyl cobalt complexes containg a tridentate amino-oximate ligand", Eur. J. Inorg. Chem., 3738 (2003).
  • G. Garau, S. Geremia, L. G. Marzilli, G. Nardin, L. Randaccio and G. Tauzher, "Crystal chemistry and binding of NO2, SCN and SeCN to Co in cobalamins", Acta Cryst., B59, 51(2003).
  • R.Dreos, G. Nardin, L. Randaccio, P. Siega, G. Tauzher and V. Vrdoljak, "Synthesis, molecular structure, and characterization in solution of a new series of inorganic and organometallic Co(III) Schiff base complexes", Inorg. Chim. Acta, 349, 239 (2003).
  • R. Dreos, G. Nardin, L. Randaccio, P. Siega and G. Tauzher, "A Guest-Induced Assembly of a Molecular Box from Methylcobaloxime and 1,4-Phenylenbisboronic Acid", Inorg. Chem., 42, 612 (2003).
  • R. Dreos, G. Nardin, L. Randaccio, P. Siega and G. Tauzher, "Self-Assembly of Cobaloximes and Rhodoximes with 3-Aminophenylboronic Acid: A Molecular Triangle and a Polymer", Eur. J. Inorg. Chem. 2885 (2002).
  • R. Dreos, A. Felluga, G. Nardin, L. Randaccio, M. Sandri and G. Tauzher, "New alkylcobalt(III) complexes containing chiral centers in the chelating system", Inorg. Chem., 41, 4548 (2002)
  • Bigotto, A. Felluga, R. Dreos, G. Nardin, L. Randaccio, G. Tauzher, S. Peressini, and C. Tavagnacco, "Organometallic Cobalt (III) Complexes with Tridentate Imino-Oximic Ligands: Structural, spectroscopic and electrochemical properties", J. Chem. Soc., Dalton Trans., 99 (2002).
  • E. Fonda, A. Michalowicz, L. Randaccio, G. Tauzher and G. Vlaic, "EXAFS Data Analysis of Vitamin B12 Model Compounds - A Methodological Study", Eur. J. Inorg. Chem., 1269 (2001).
  • R. Dreos, A. Felluga, G. Nardin, L. Randaccio, P. Siega and G. Tauzher, "New Alkyl-Cobalt(III) Complexes with Tridentate Amino-Oxime Ligands: Synthesis, Structure and Reactivity", Eur. J. Inorg. Chem., 267 (2001).
  • R. Dreos, A. Felluga, G. Nardin, L. Randaccio, P. Siega and G. Tauzher, "A New Organocobalt Complex Containing a Co-N-C Three Membered Ring", Inorg. Chem., 40, 5541 (2001).
  • R. Dreos, G. Nardin, L. Randaccio, P. Siega, G. Tauzher and V. Vrdoljak, "A Molecular Box derived from Cobaloxime Units Held Together by 4-Pyridinylboronic Acid Residues", Inorg. Chem., 40, 5536 (2001).
  • F. Asaro, R. Dreos, G. Nardin, G. Pellizer, S. Peressini, L. Randaccio, P. Siega, G. Tauzher and C. Tavagnacco, "para-Substituted Diphenylborilated Organocobaloximes: Effects of Substituents on Conformation and Redox Properties", J. Organometallic. Chem., 601, 114 (2000).
  • Webmaster: Patrizia Siega

    last update: 28 October 2009