Spectroscopic Investigations of Iron(II) and Iron(III) Oxalates

被引：87

作者：

D'Antonio, Maria C. ^{[4
,5
]}

Wladimirsky, Alejandra ^{[4
]}

Palacios, Daniel ^{[4
]}

Coggiola, Liliana ^{[4
]}

Gonzalez-Baro, Ana C. ^{[1
]}

Baran, Enrique J. ^{[1
]}

Mercader, Roberto C. ^{[2
,3
]}

机构：

[1] Natl Univ La Plata, Fac Ciencias Exactas, Ctr Quim Inorgan, RA-1900 La Plata, Argentina

[2] Natl Univ La Plata, Fac Ciencias Exactas, Dept Fis, RA-1900 La Plata, Argentina

[3] Natl Univ La Plata, Fac Ciencias Exactas, CONICET, Inst IFLP, RA-1900 La Plata, Argentina

[4] UTN Unidad Acad Rio Gallegos, Dept Ciencias Basicas, RA-9400 Rio Gallegos, Argentina

[5] Univ Nacl Patagonia Austral, Dept Ciencias Exactas & Nat, RA-9400 Rio Gallegos, Argentina

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2009年 / 20卷 / 03期

关键词：

iron oxalates; IR spectroscopy; Raman spectroscopy; Mossbauer; COORDINATION POLYMERS; MOSSBAUER; DECOMPOSITION; SPECTRA; ROCKS;

D O I：

10.1590/S0103-50532009000300006

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In an attempt to contribute to a better characterization of Fe-II and Fe-III oxalate complexes, an investigation of their vibrational (infrared and Raman) and Fe-57-Mossbauer spectra was performed. It is shown that the two polymorphs, alpha and beta, of FeC2O4 center dot 2H(2)O cannot be accurately differentiated with any of these spectroscopic methods, demonstrating the high structural similarity of these two crystalline forms. Partially deuterated samples of beta-FeC2O4 center dot 2H(2)O were also investigated to improve the vibrational-spectroscopic analysis. In the case of Fe-2(C2O4)(3)center dot 4H(2)O, a structural model, derived from results of combined vibrational and Mossbauer data, could be proposed. The 298 K Mossbauer spectrum for this complex is discussed in detail for the first time.

引用

页码：445 / 450

页数：6

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