Title of article
Temperature-Dependent Raman Study of CaCu (HCOO)4 and Ca2Cu(HCOO)6 Crystals
Author/Authors
Sasaki، J. M. نويسنده , , Paschoal، C. W. A. نويسنده , , Moura، M. R. نويسنده , , Ayala، A. P. نويسنده , , Freire، P. T. C. نويسنده , , Melo، F. E. A. نويسنده , , Filho، J. Mendes نويسنده , , Guedes، I. نويسنده , , Leyva، A. G. نويسنده , , Polla، G. نويسنده , , Vega، D. نويسنده , , Perazzo، P. K. نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
-337
From page
338
To page
0
Abstract
Unpolarized Raman spectra of policrystalline samples of calcium (II)-copper (II) formate [CaCu(HCOO)4] and dicalcium (II)-copper (II) formate [Ca2Cu(HCOO) 6] were recorded and analyzed in the temperature range from 30 to 300 K. The observed modes at 300 K were assigned on the basis of formate group vibrations and correlations with previous data reported for other formate compounds. The splitting of the internal HCOO modes agrees with the group theory predictions. No changes either in the wavenumber or intensity of Raman modes were observed when the temperature of the samples was cooled to 30 K. This indicates that these compounds do no exhibit any phase transformation in the temperature range investigated.
Keywords
heterometalate , polythiometalate , Self-assembly
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
Serial Year
2000
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
Record number
56598
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