Ferric Chloride Complexes in Aqueous Solution: An EXAFS Study.

Ferric Chloride Complexes in Aqueous Solution: An EXAFS Study.
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DOI:
10.1007/s10953-018-0756-6
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发表时间:
2018
影响因子:
1.2
通讯作者:
Persson I
Persson I
中科院分区:
化学4区
文献类型:
--
作者:
Persson I

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用EXAFS研究了一系列不同氯化物:铁(III)比的氯化铁浓水溶液,确定了溶液中主要物种铁(III)离子周围的结构。在氯化铁的稀酸性水溶液中,当浓度小于1 mmol·dm−3时,主要的物种是水合铁(III)和氯离子,而在浓水溶液和氯离子过量的溶液中,当浓度高达1.0 mol·dm−3时,主要物种是反式-[FeCl 2(H2O)4]+络合物。尽管氯离子过量为1 mol·dm−3,但在任何研究的溶液中均未观察到文献中提出的室温下可能存在的更高的氯高铁酸盐(III)或二聚[Fe 2Cl 6]络合物。本文的在线版本(10.1007/s10953-018-0756-6)包含补充材料,可供授权用户使用。
A series of concentrated aqueous solutions of ferric chloride with different chloride:iron(III) ratios has been studied by means of EXAFS to determine the structure around the iron(III) ion of the dominating species in such solutions. The dominating species in dilute acidic aqueous solution of ferric chloride, at less than 1 mmol·dm−3, are the hydrated iron(III) and chloride ions, while in concentrated aqueous solution and in solutions with an excess of chloride ions, up to 1.0 mol·dm−3, it is the trans-[FeCl2(H2O)4]+ complex. Possible higher chloroferrate(III) or dimeric [Fe2Cl6] complexes at room temperature, as proposed in the literature, were not observed in any of the studied solutions in spite of an excess of chloride ions of 1 mol·dm−3. The online version of this article (10.1007/s10953-018-0756-6) contains supplementary material, which is available to authorized users.
DOI: 10.1021/ic50208a044
发表时间: 1980-01-01
影响因子: 4.6
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