After a post-doctoral year with F. A. Cotton at Texas A&M University, supported by a Liebig Fellowship, he completed his habilitation for inorganic chemistry in 1982 ("Coordination Chemistry of Reduced Heterocycles").
He completed his habilitation for inorganic chemistry in 1982 ("Coordination Chemistry of Reduced Heterocycles"). This was after a post-doctoral year with F. A. Cotton at Texas A&M University. Texas A&M University was supported by a Liebig Fellowship.