What Is The Molecular Structure of Ammonium Paratungstate? 2023-02-23 Tungsten Oxide 191 The molecular structure of ammonium paratungstate is composed of tungstate ion (WO2 (WO3) 2) and two ammonium ions (NH4+). Tungstate ion is a six-membered ring structure composed of two WO2 and two WO3 ions. 0 0 ammonium paratungstatemolecular structure