Extended X-ray absorption fine structure studies in some aqueous copper(II) solutions.
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概要
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With a laboratory EXAFS apparatus consisting of a usual X-ray generater, an LiF crystal, and a position sensitive X-ray detector with a self-scanning photodiode array, EXAFS spectra were obtained for aqueous [Cu(NH<SUB>3</SUB>)<SUB>4</SUB>]SO<SUB>4</SUB>, [Cu(en)<SUB>2</SUB>]Cl<SUB>2</SUB> (en=ethylenediamine), and CuSO<SUB>4</SUB> solutions. By reference to similar spectra of the corresponding crystals, the solution spectra were analyzed by the curve-fitting method. The values obtained for the distances between the metal and its first-shell atoms in the ammine and sulfate solutions are 2.03 (±0.02) and 1.98 (±0.03) Å, in accordance with those derived from the X-ray diffraction experiments. The Cu–N distance of [Cu(en)<SUB>2</SUB>]<SUP>2+</SUP> in solution is 2.02 or 2.04 (±0.02) Å. These values obtained for the solutions are very close to those of corresponding solid complexes.
- 公益社団法人 日本化学会の論文
著者
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Yamatera Hideo
Department of Chemistry, Faculty of Science, Nagoya University
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Sano Mitsuru
Laboratory of Inorganic Chemistry, Faculty of General Education, Nagoya University
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Maruo Tetsuya
Department of Chemistry, Faculty of Science, Nagoya University
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Sano Mitsuru
Laboratory of Inorganic Chemistry, College of General Education, Nagoya University
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