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The Borosulfates K4[BS4O15(OH)], Ba[B2S3O13], and Gd2[B2S6O24]
Authors:Peter Gross  Arno Kirchhain  Henning A Höppe
Institution:Universitaet Augsburg, Institut fuer Physik, Augsburg, Germany
Abstract:K4BS4O15(OH)], BaB2S3O13], and Gd2B2S6O24] were obtained by a new synthetic approach. The strategy involves initially synthesizing the complex acid HB(HSO4)4] which is subsequently reacted in an open system with anhydrous chlorides of K, Ba, and Gd to the respective borosulfates and a volatile molecule (HCl). Furthermore, protonated borosulfates should be accessible by appropriate stoichiometry of the starting materials, particularly in closed systems, which inhibit deprotonation of HB(HSO4)4] via condensation and dehydration. This approach led to the successful synthesis of the first divalent and trivalent metal borosulfates (BaB2S3O13] with band‐silicate topology and Gd2B2S6O24] with cyclosilicate topology) and the first hydrogen borosulfate K4BS4O15(OH)].
Keywords:barium  borosulfates  gadolinium  potassium  sulfatoborates
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