Sie sind hier: FRIAS School of Soft Matter … Fellows Ingo Krossing

Ingo Krossing

Institute for Inorganic and Analytical Chemistry
Chair of Molecular- and Coordination Chemistry
Freiburg, Germany

Freiburg Institute for Advanced Studies
School of Soft Matter Research
Albertstr. 19
79104 Freiburg im Breisgau

Tel. +49 761 203 6122


Ingo Krossing obtained his Diploma (1994) and Dr.rer. nat. (1997) in preparative inorganic chemistry at the Ludwigs-Maximilians-Universität in Munich. After a two year postdoctoral stay as a Fedor-Lynen fellow in fluorine and quantum chemistry in Canada (University of New Brunswick) he returned to Germany and started his independent research at the Technical University of Karlsruhe in 1999. By 2002 he finished the Habilitation and was appointed Privatdozent. The work around the Habilitation was awarded the well renown ADUC-Jahrespreis für Habilitanden 2001 and later the Akademiepreis für Chemie of the Academy of Sciences in Göttingen in 2004. In the same year he moved as an assistant professor to the EPF Lausanne and in 2006 he was appointed Chair of Molecular and Coordination Chemistry at the Albert-Ludwigs-Universität Freiburg where he is also a member of the Freiburger Materials Research Center FMF ( His research subject – weakly coordinating anions – was awarded the very prestigious Otto-Klung-Weberbank Preis in 2006 (

Ingo Krossing is a member of the board of the Wöhler-Vereinigung für Anorganische Chemie of the GDCh (The inorganic chemistry section of the GDCh) as well as a member of the board of the Arbeitsgemeinschaft Fluorchemie of the GDCh (Fluorine Working Group at and scientific advisor of the Ionic Liquids Company IoLiTec (

His scientific interests are focused around ionic systems that include weakly coordinating anions (WCAs) as one essential ingredient. Thus, the group develops new WCAs, applies them in Soft Matter areas like polymerizations or Ionic Liquid and studies the very fundamentals of the involved materials usually by a combination of experiment and computational chemistry.



Three aspects will be touched in the project: Ionic Liquids, polymerizations and Bronsted Acidity. In the area of Ionic Liquids we introduced a new, meaningful basis for the concept of free and hardcore volume – that governs the physical properties like viscosity and conductivity. During the FRIAS time we want to refine those ideas, develop methods for their temperature dependent prediction and use those for the understanding and prediction of physical properties of Ionic Liquids. For polymerization chemistry we developed a new WCA based catalyst system that shall be studied with more detail. The last part aims at an understanding of Bronsted acidity in all media and at all concentrations/acitivites. Since we were able to prepare very strong Bronsted Acids with WCA counterions – that inter alia may be used for polymerizations – we were interested to compare theses acidities to classical superacid systems. In this course we developed a new Bronsted acidity scale that allows for a thermodynamic accurate description of Bronsted acidites even over solvent and phase boundaries and may be used in all areas where the protochemical potential changes during use, i.e. in fuel cells or the biological proton pump and many other areas.


Selected Publications

  1. J. Schaefer, A. Steffani, D.A. Plattner, I. Krossing: A Se(19) Homocycle Complexed by Two Copper(I) Ions. Angew. Chem Int Edit, 2012;
  2. M. Burchner, A. M. Erle, H. Scherer, I. Krossing: Synthesis and Characterization of Boranate Ionic Liquids (BILs). Chem-eur J, 2012; 18 (8) : 2254-2262.