title: closo-[B21H18]-: a face-fused diicosahedral borate ion.
authors: Fachbereich C-Anorganische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42097 Wuppertal, Germany. edbern@uni-wuppertal.de
authors: Eduard
authors: E
authors: Bernhardt
authors: David J
authors: DJ
authors: Brauer
authors: Maik
authors: M
authors: Finze
authors: Helge
authors: H
authors: Willner