Thermal dehydration and structural models of two new vanadyl sulfate hydrates
The preparation of a new modification of vanadyl sulfate trihydrate, VOSO 4 · 3H 2O, is described. In the course of its thermal dehydration, another new phase, VOSO 4 · 2H 2O, is observed as an intermediate. Crystal data for the two compounds are: VOSO 4 · 3H 2O, orthorhombic, a = 8.980 ± 0.006, b =...
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| Published in | Journal of solid state chemistry Vol. 45; no. 1; pp. 112 - 118 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Inc
01.11.1982
|
| Online Access | Get full text |
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| Summary: | The preparation of a new modification of vanadyl sulfate trihydrate, VOSO
4 · 3H
2O, is described. In the course of its thermal dehydration, another new phase, VOSO
4 · 2H
2O, is observed as an intermediate. Crystal data for the two compounds are: VOSO
4 · 3H
2O, orthorhombic,
a = 8.980 ± 0.006,
b = 9.026 ± 0.009,
c = 7.776 ± 0.003 Å, space group
P2
12
12; VOSO
4 · 2H
2O, monoclinic,
a = 8.913 ± 0.027,
b = 8.93 ± 0.09,
c = 7.80 ± 0.06 Å, β = 92.4 ± 0.6°. From the topotaxy of the dehydration reaction, structural models for the two phases are deduced. They consist essentially of VOSO
4 layers similar to those in α-VOSO
4 and interlayer water. |
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| ISSN: | 0022-4596 1095-726X |
| DOI: | 10.1016/0022-4596(82)90297-3 |