Spectroscopic characterization of mixed cation diphosphates of the type MIFeIIIP2O7 (with MI=Li, Na, K, Rb, Cs, Ag)

被引：22

作者：

Parajon-Costa, B. S. ^{[1
]}

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

Baran, E. J. ^{[1
]}

机构：

[1] Univ Nacl La Plata, Fac Ciencias Exactas, Ctr Quim Inorgan CEQUINOR CONICET, UNLP, RA-1900 La Plata, Argentina

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

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

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2013年 / 74卷 / 02期

关键词：

Inorganic compounds; Chemical synthesis; Infrared spectroscopy; Mossbauer spectroscopy; Raman spectroscopy; CRYSTAL-STRUCTURE; OXIDATIVE DEHYDROGENATION; VIBRATIONAL-SPECTRUM; INFRARED SPECTRA; IRON PHOSPHATES; ISOBUTYRIC ACID; PYROPHOSPHATES; LIFEP2O7; ALKALI; FRAMEWORK;

D O I：

10.1016/j.jpcs.2012.10.012

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The mixed cation diphosphates of composition (MFeP2O7)-Fe-I-P-III have been prepared using the so called co-precipitation method starting with Fe(III) and M(I) nitrate solutions and solid (NH4)H2PO4, and characterized by X-ray powder diffractometry. The infrared and Raman spectra of the compounds were recorded and the results are briefly discussed on the basis of their structural peculiarities. The Fe-57-Mossbauer spectra show that the typical high-spin (FeO6)-O-III octahedra existent in these compounds exhibit almost no distortion. However, the hyperfine parameters are sensitive to some characteristics of the M-I cations and to the different structural types. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：354 / 359

页数：6

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