Chloride Complexation of Zr and Hf in HCl Investigated by Extended X-ray Absorption Fine Structure Spectroscopy: Toward Characterization of Chloride Complexation of Element 104, Rutherfordium (RF)

被引：10

作者：

Haba, Hiromitsu ^{[1
]}

Akiyama, Kazuhiko ^{[2
]}

Tsukada, Kazuaki ^{[3
]}

Asai, Masato ^{[3
]}

Toyoshima, Atsushi ^{[3
]}

Yaita, Tsuyoshi ^{[3
]}

Hirata, Masaru ^{[3
]}

Sueki, Keisuke ^{[4
]}

Nagame, Yuichiro

机构：

[1] RIKEN, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan

[2] Tokyo Metropolitan Univ, Grad Sch Sci & Engn, Tokyo 1920397, Japan

[3] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[4] Univ Tsukuba, Dept Chem, Tsukuba, Ibaraki 3058577, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2009年 / 82卷 / 06期

关键词：

CRYSTAL-STRUCTURE; SOLID-STATE; TRANSITION; CHEMISTRY; SPECTRA; ANIONS; ION; SE;

D O I：

10.1246/bcsj.82.698

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Chloride complexation of the group-4 elements Zr and Hf in 8.0-11.9M HCl is investigated by extended X-ray absorption line structure (EXAFS) spectroscopy to characterize chloro complexes of the transactinide element, rutherfordium (Rf). The complexes of Zr and FIT successively vary with the concentration of HCl from a hydrated complex [M(H2O)(8)](4+) at 8.0M to a hexachloro complex [MCl6](2-) at 11.9M (M = Zr and Hf). The present structural changes of the Zr and Hf complexes well reflect the previously studied anion-exchange behavior of Zr and Hf in HCl. From both the EXAFS and anion-exchange results, we suggest that Rf forms the same complexes as those of Zr and Hf in HCl, and that the complexation strength of the hexachloro complexes of the group-4 elements, [MCl6](2-) (M = Zr, Hf, and Rf), is in the sequence of Rf > Zr > Hf.

引用

页码：698 / 703

页数：6

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