Affiliation: | a Degussa AG, Advanced Fillers and Pigment Division, P.O. Box 1165, D-50328 Hürth, Germany b Institute of Organic Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle, Germany c Department of Chemistry, University of Applied Sciences Merseburg, D-06217 Merseburg, Germany d Degussa AG, Advanced Fillers and Pigment Division, P.O. Box 1345, D-63403 Hanau, Germany |