1943 Born in Vienna

1961-1969 Chemistry study at the University of Vienna, Ph.D. advisor G. Derflinger

1972-1973 Postdoc with W. Kutzelnigg, Karlsruhe

1976 Habilitation

1980 Visiting Professor with I. Shavitt at The Ohio State University

1980 Professor of Theoretical Chemistry at the University of Vienna
1990, 1993, 1996, 1999, 2001 and 2002 Visiting Scientist at the Argonne National Laboratory 
1992 - 1996 Director of the Institute of Theoretical Chemistry and Radiation Chemistry

2008-2009 Visiting Professor with P. Hobza at the Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences

2011 Senior Research Professor at Texas Tech University, Lubbock, Texas

Research interests: Multireference configuration interaction methods based on the COLUMBUS program system, excited states, computational photodynamics, solvent effects, modeling of adsorption processes in soils