Crystal Structure of Te2O3F2
| Autor: | J. Carre, Bernard Frit, A. Ider, J.P. Laval, J.P. Bastide |
|---|---|
| Přispěvatelé: | Laboratoire de Matériaux Céramiques et Traitements de Surface (LMCTS), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon |
| Rok vydání: | 1996 |
| Předmět: |
Valence (chemistry)
Chemistry [CHIM.MATE]Chemical Sciences/Material chemistry 02 engineering and technology Crystal structure Triclinic crystal system 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences [SPI.MAT]Engineering Sciences [physics]/Materials 0104 chemical sciences Electronic Optical and Magnetic Materials Inorganic Chemistry Crystallography Materials Chemistry Ceramics and Composites Physical and Theoretical Chemistry 0210 nano-technology Single crystal ComputingMilieux_MISCELLANEOUS Diffractometer |
| Zdroj: | Journal of Solid State Chemistry Journal of Solid State Chemistry, Elsevier, 1996, 123 (1), pp.68-72. ⟨10.1006/jssc.1996.0153⟩ |
| ISSN: | 0022-4596 1095-726X |
| DOI: | 10.1006/jssc.1996.0153 |
| Popis: | Te2O3F2crystallizes with the triclinic symmetry (space groupP-1) and the unit cell parametersa= 515.3(1) pm,b= 625.7(1) pm,c= 688.8(1) pm, α = 98.71(1)°, β = 110.31(1)°, γ = 92.72(1)°,Z= 2. Its structure was solved and refined toRvaluesR1= 0.024 and wR2= 0.059 on the basis of 699 independent reflections recorded on a single crystal with an automatic four-circle diffractometer. The two Te atoms are, respectively, fourfold and fivefold coordinated and their lone pairEis stereochemically active. The bond valence calculation shows a perfect O/F order. The Te(1)O3FEand Te(2)O4FEpolyhedra form, by sharing O–O edges, bipolyhedral units with a very short Te–Te distance (319 pm). These units, by sharing corners, constitute independent sheets parallel tox0y. All the F atoms are nonbridging and orientated, together with the lone pairsE, toward the interlayer space. The structural relationships with the α-TeO2structure have been evidenced and analyzed. |
| Databáze: | OpenAIRE |
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