Abstract
A characteristic property of the fluorides of the heavier metals is the ease with which they form hydrates. For example, D'Eye and his co-workers characterized six hydrates of thorium tetrafluoride and two hydrates of zirconium, uranium and plutonium tetrafluoride. Thorium tetrafluoride appears to form two sets of related hydrates; the first by precipitation of the fluoride from a Th 4+ solution and the second by hydration of anhydrous tetrafluoride. Their formation and inter-relationships probably depend as much on the ability of fluorine and oxygen to form hydrogen bonds as on the occurrence of structural voids due to the tendency of fluorine to form network structures. Hydrogen bonds are present in CuF 2,2H 2O for example, whereas in uranium tetrafluoride excess fluorine can be accommodated in lattice voids.
Published Version
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