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Apr 28, 2011 - 6 Claims, 4 Drawing Sheets. VILLALLINNA ... germanium; a source of fluoride ions; and a structure direct- ing agent ... (e.g., fluoride, chloride, bromide and iodide), hydroxide, ... 60 oxide, germanium alkoxides (e.g., germanium ethoxide, ger- ... reaction mixture may further comprise a source of aluminum.