Karl Wilhelm Törnroos

Name        : Karl Wilhelm Törnroos
Position    : Professor
Institution : Department of Chemistry, University of Bergen
Address     : Allegaten 41, 5007 Bergen, Norway
Phone       : +47 55 58 35 52
Fax         : +47 55 58 94 90
E-mail      : karl.tornroos@uib.no

Research & Activity:

My principal scientific tool is crystallography and I am head of the crystallography
laboratory at the Institute of Chemistry.

Two chief fields of research interest may be mentioned. The first aims at 
systematically produce and determine structural features (geometrical, vibrational and 
electronic) of silasesquioxane cage compounds. These include homo- and hetero- 
substituted cages, functionalised with catalytic ligands, as well as development of 
linked cages in order to achieve potential donor/acceptor complexes using appropriate 
donor/acceptor molecules. Additional experimental tools used to this end are; EHMO-
calculations, IR, Raman, NMR, normal-coordinate analysis, structure-structure 
correlation analysis, and first-principle theoretical calculations of electron densities. 
Solid state phase transitions are also explored. 

Secondly, new organic metals; cationic radical salts of derivatives of 
tetrathiafulvalenes and thiophenes as well as Se and Te based analogues, are 
synthesised and explored with respect to their electronic properties (potential 
compounds in molecular electronics). Recoupling of gathered information and 
knowledge in order to direct/redirect and improve methods of reaching main 
objectives.

In addition, a third field of interest is in new antioxidants applied to polyolefins, 
plastics and elastomers are being developed and characterised, exploring the 
antioxidative properties of organotellurium compounds. These exhibit several types of 
antioxidant properties and may also be regenerated in situ, thus being potentially both 
multifunctional and catalytic.


Project collaborators: 

G. Calzaferri (University of Bern, Switzerland)
H. Marsmann (University of Paderborn, Germany) 
J. Hellberg (Royal Institute of Technology, Stockholm, Sweden)
L. Engman (Uppsala University, Sweden)

Representative Publications:


K.W. Törnroos
"Structure of Octahydridosilasesquioxane Determined by Neutron Diffraction"
Acta Cryst., C50, 1646-1648, 1994.

G. Calzaferri, R. Imhof & K.W. Törnroos
"Structural and Vibrational Properties of the Octanuclear Silasesquioxane C6H13(H7Si8O12)"
J. Chem. Soc. Dalt. Trans., 3123-3128, 1994.

K.W. Törnroos, H.-B. Bürgi, G. Calzaferri & H. Bürgy
"The Crystal and Molecular Structure of Dodedecahydridosilasesquioxane, H12Si12O18"
Acta Cryst., B51, 155-161, 1995.

G. Calzaferri, C. Marcolli, R. Imhof & K.W. Törnroos
"The monophenylhydrosilasesquioxanes PhHn-1SinO1.5n  where n=8 or 10"
J. Chem. Soc. Dalt. Trans.,  3313-3322, 1996.

M. Moge, J. Hellberg, K.W. Törnroos & J.-U. von Schütz
"Synthesis and Crystal Structure of a New Unsymmetrical Oxygen Containing TTF"
Advanced Materials, 8, 807-808, 1996.



If you want to mail me press here:

karl.tornroos@uib.no


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