Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Single crystals of Bi2Ga4O9 are grown from a solution in a bismuth oxide melt. The structure (orthorhombic, space group Pbam, a = 7.918(2) Å, b = 8.299(2) Å, c = 5.894(2) Å, Z = 2) is refined to R = 0.052 in the anisotropic approximation based on single-crystal X-ray diffraction data. The structure is a framework. The bismuth(III) atoms are sixfold coordinated; gallium(III) exists in both tetrahedral and octahedral coordinations. The thermal expansion of Bi 2Ga4O9 is studied by high-temperature X-ray powder diffraction method and is found to be sharply anisotropic. A structural interpretation of the anisotropy is proposed. Chemical distortion in the Bi 2M4O9 compounds with M = Fe(III), Al, or Ga is analyzed and compared with the thermal expansion of Bi2Ga 4O9.
Язык оригинала | английский |
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Страницы (с-по) | 878-883 |
Число страниц | 6 |
Журнал | Russian Journal of Inorganic Chemistry |
Том | 51 |
Номер выпуска | 6 |
DOI | |
Состояние | Опубликовано - июн 2006 |
ID: 5069757