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Structure of Glasses of the TeO 2 – MoO 3 System
Author(s) -
Dimitriev Y.,
Dimitrov V.,
Bart J. C. J.,
Arnaudov M.
Publication year - 1981
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19814790828
Subject(s) - polyhedron , crystallography , materials science , infrared , infrared spectroscopy , chemistry , optics , physics , mathematics , organic chemistry , combinatorics
Structural models for glasses of the TeO 2 –MoO 3 system are suggested. On the basis of X‐ray and infrared spectral investigations, by comparing with known crystalline structures of TeO 2 , MoO 3 and Te 2 MoO 7 (T 2 M), it is shown that the glasses from TeO 2 to Te 2 MoO 7 possess [TeO 4 ] and [MoO 5 ] groups as basic structural units. The latter are connected to form [Mo 2 O 8 ] complexes. The glasses in the MoO 3 ‐rich compositional range are built up of [TeO 3 ] and [MoO 6 ] polyhedra. The glass‐formation tendency is discussed in relation to the role of the free electron pair and the disruption of secondary and weak primary bonds in the crystals.