<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>(H<sub>3</sub>O)<sub>2</sub>NaAl<sub>3</sub>F<sub>12</sub> is obtained as minor phase from the solvothermal reaction of Al(OH)<sub>3</sub>, NaOH, 1, 2, 4‐triazole, and 40% aq.</p> </abstract>