First ternary tungsten tellurate(IV) WTeO with unique crystal structure type.

At multianvil high-pressure/high-temperature conditions of 10 GPa and 1273 K, the first ternary tungsten tellurate WTeO is formed, starting from a stoichiometric mixture of WO and TeO. The compound crystallizes triclinic in a hitherto unknown crystal structure type with the space group 1̄; (no. 2), and was refined from single-crystal X-ray diffractometer data: = 538.