ChemInform Abstract: Effect of pH and Reaction Time on the Structures of Early Lanthanide(III) Borate Perchlorates.

Reactions of LnCl3 (Ln: La-Nd, Sm, Eu) with 11 M HClO4 in molten H3BO3 (autoclave, 240 °C, 3, 5, or 7 d) lead to the formation of Ln[B8O10(OH)6(H2O) (ClO4)]·0.5H2O (Ln: La-Nd, Sm), Pr[B8O11(OH)4(H2O) (ClO4)], Ln[B7O11(OH)(H2O)2 (ClO4)] (Ln: Pr, Nd, Sm, Eu), and Ce[B8O11(OH)4(H2O) (ClO4)] depending on the lanthanide metal and the reaction time. [ABSTRACT FROM AUTHOR]