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Structural modifications of Cu(II) 12-tungstophosphoric acid salt studied by IR and Raman spectroscopy

IR i ramanska ispitivanja strukturnih modifikacija bakarne soli 12-volframfosforne kiseline

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Authors
Mioč, Ubavka B.
Todorović, Marija R.
Uskoković-Marković, Snežana
Nedić, Zoran P.
Stamenković, Vojislav
Čajkovski, Tamara
Article (Published version)
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Abstract
In this paper local processes and structural phase transformations of the copper salt of 12-tungstophosphoric acid are investigated. The structural phase transformations were followed through bands, characteristic for the host lattice, in the IR and Raman spectra. The results of these investigations, as well as those of XRPD analysis and impedance measurements as a function of temperature show that some local processes provoke the change in the secondary structure of the Keggin anions.
U ovom radu ispitivani su lokalni procesi i strukturne fazne transformacije soli bakra 12-volframfosforne kiseline. Strukturne fazne transformacije praćene su preko traka karakterističnih za kristalnu rešetku u infracrvenim i ramanskim spektrima. Rezultati ovih ispitivanja, kao i oni dobiveni rendgeno-strukturnom analizom i iz impedansnih merenja, odnosno provodljivost u funkciji temperature, pokazuju da je fazna transformacija vezana za promene lokalne strukture, tj. sekundarne strukture Keginovih anjona. PR Projekat Ministarstva nauke Republike Srbije.
Keywords:
IR spectra / Raman spectra / heteropoly compounds / proton conductors / phase transformations
Source:
Journal of the Serbian Chemical Society, 2000, 65, 5-6, 407-415
Publisher:
  • Srpsko hemijsko društvo, Beograd

ISSN: 0352-5139

WoS: 000087397100017

Scopus: 2-s2.0-0034361504
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URI
http://farfar.pharmacy.bg.ac.rs/handle/123456789/262
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