RUDI VAN ELDIK, DSc, is Professor of Inorganic Chemistry at the University of Erlangen-Nurnberg, Germany. He is the editor of Inorganic High Pressure Chemistry and coeditor of High Pressure Chemistry and Biochemistry. COLIN D. HUBBARD, PhD, until recently Professor of Chemistry at the University of New Hampshire in Durham, is presently group leader at the University of Erlangen-Nurnberg, Germany.