<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Orange single crystals of the title compound are obtained from an equimolar mixture of TeO<sub>2</sub>, FeCl<sub>3</sub>, FeCl<sub>2</sub>, Fe<sub>2</sub>O<sub>3</sub>, and (NH<sub>4</sub>)H<sub>2</sub>PO<sub>4</sub> (evacuated silica tube, 550 °C, 70 h).</p> </abstract>