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
收藏
页码：354 / 359
页数：6
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