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Lithium tungstate

CAS number : 13568-45-1

Molecular weight :261.72

Molecular formula/chemical symbol :Li2WO4

Description :

Lithium tungstate is the inorganic compound with the formula Li2WO4. It is a white solid that is soluble in water. The compound is one of the several orthotungstates, compounds that feature the tetrahedral WO42- anion.

The salt consists of tetrahedrally coordinated Li and W centres bridged by oxides. The W-O and Li-O bond distances are 1.79 and 1.96 ?, respectively. These differing bond lengths reflect the multiple bond character of the W-O interaction and the weaker ionic bonding between the Li-O interactions. The solid undergoes phase transitions at high pressures, such that the coordination geometry at tungsten becomes octahedral (six W-O bonds). For example at 40 kilobars, it adopts a structure related to wolframite.

Lithium tungstate

Identifiers

CAS number

13568-45-1

Properties

Molecular formula

Li2O4W

Appearance

white solid

Density

4.56 g/cm3

Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

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