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At present , it is difficult to make a reliable assignment of these bands . However , according to reported data ( 5 - 7 ) , the band at 885 cm- ' may be attributed to the stretching vibrations of the Si - N bond .
At present , it is difficult to make a reliable assignment of these bands . However , according to reported data ( 5 - 7 ) , the band at 885 cm- ' may be attributed to the stretching vibrations of the Si - N bond .
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In sintering According to crystal - optical and X - ray diffraction together with sodium carbonate , gehlenite can be data , aluminum oxide is present in the slag in the form present up to 1073 K. From 1073 to 1173 K , gehlenite of ...
In sintering According to crystal - optical and X - ray diffraction together with sodium carbonate , gehlenite can be data , aluminum oxide is present in the slag in the form present up to 1073 K. From 1073 to 1173 K , gehlenite of ...
Trang 1333
1 ) and saturation , that platinum complexes with podands ( L ) with the ratio Pt : L = 1 : 2 are present in the organic phase . In the visible region , the absorption spectrum of the extract has an absorption band typical of Ptc13 ...
1 ) and saturation , that platinum complexes with podands ( L ) with the ratio Pt : L = 1 : 2 are present in the organic phase . In the visible region , the absorption spectrum of the extract has an absorption band typical of Ptc13 ...
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HighTemperature Superconductors | 675 |
A Isupov | 698 |
Properties of Perovskitelike Layered Ferroelectric Compounds of the AmBi2MO3 + 3 Type | 705 |
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absorption According acid addition analysis angles anion aqueous atoms bands bismuth bonds calculated cations charge Chem chemical Chemistry chloride complex composition compounds concentration constant containing coordination Copyright corresponding crystal curve decrease dependence described determined diagram distances effect electron elements equilibrium exhibit experimental extraction Figure follows formation heating hydrogen increase indicate initial Inorganic intensity interaction ions Khim layers leads ligand measured melting metal method mixture molecules Moscow Neorg Note observed obtained oxidation oxygen parameters phase positions possible powder prepared present properties Publishing range ratio reaction REFERENCES region respectively Russian salts samples Sciences shift shows similar sodium solid solutions solubility solution space group spectra spectrum stability structure studied superconducting synthesis Table temperature thermal tion transition Translation values various vibrations X-ray diffraction