التفاصيل البيبلوغرافية
| العنوان: |
SPECTROSCOPIC STUDIES OF LACUNARY POLYOXOTUNGSTATES CERIUM (III) COMPLEXES BASED ON α-B-[BiIIIW9O33]9- UNITS. |
| المؤلفون: |
Rusu, D., Mare, D., Berindean, C., Ungurean, A., Baban, O., David, L. |
| المصدر: |
Studia Universitatis Babes-Bolyai, Physica; Jun2012, Vol. 57 Issue 1, p87-92, 6p, 1 Chart, 3 Graphs |
| مصطلحات موضوعية: |
CERIUM, SPECTRUM analysis, ANALYTICAL chemistry, CATIONS, PHYSICAL sciences, ELECTROMECHANICAL technology |
| مستخلص: |
Two new large cerium complexes (1: K19[(BiW9O33)4WO2(H2O)]2Ce3(H2O)8(Bi4O4)].48H2O and 2: K15[Ce2(H2O)2(BiW9O33)(W5O18)2].21H2O were synthesized and characterized by chemical analysis, FT-IR and UV-Vis spectroscopy in order to determine the coordination, the ordering of cation electronic levels and the local symmetry. Based on the FT-IR spectra of the complexes we estimated that the coordination take place through the cerium ions, forming trilacunary polyoxoanion compounds. The UV and Vis electronic spectra present bands assigned to the charge transfer metal-ligand. The spectroscopic investigations indicate a sandwich-type structure for the two complexes. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
