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Polymorphism phosphorus oxide

Details of the structure of vitreous phosphoric oxide are dependent upon the source of P2O5 used to produce the melt. Crystalline phosphoric oxide exists in three polymorphic forms hexagonal, orthorhombic, and tetragonal. These crystals all contain phosphorus-oxygen tetrahedra, but contain different intermediate range units in the form of... [Pg.103]

Phosphorus pentoxide exists in at least four polymorphic forms as well as a glass. The common variety of laboratory and commerce already discussed (mp = 420 C, p = 2.30 g/cc) consists of large cage molecules (4.41a) arranged in a hexagonal crystal lattice with only weak van der Waals-type forces between the cages. This was sometimes known as the H form or Form T of the oxide. [Pg.117]

See other pages where Polymorphism phosphorus oxide is mentioned: [Pg.381]    [Pg.247]    [Pg.235]    [Pg.3423]    [Pg.3422]    [Pg.473]    [Pg.86]    [Pg.88]    [Pg.428]   
See also in sourсe #XX -- [ Pg.473 ]



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