The Hydration of Tungstate and Molybdate Ions in Aqueous Solution

Abstract

The structure in aqueous solution of the hydrated tungstade and molybdate ions WO2–4 and MoO2–4 has been derived from large angle X-ray scattering measurements using MoO2–4 as an isomorphous substituent for WO2–4. The W(Mo)-O bond lengths are 1.786 Å and do not differ from those found in crystal structures. A fairly well-defined hydration shell of about 12 water molecules surrounds the XO2–4 ions at a W(Mo)H2O distance of 4.06 Å. © 1986, American Medical Association. All rights reserved.