Structure and Vibrational Spectra of a New Acidic Diphosphate K2Cu(H2P2O7)2·2H2O
| Autor: | Redouane Khaoulaf, Mustapha Ezzaafrani, A. Ennaciri, Francesco Capitelli |
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| Rok vydání: | 2013 |
| Předmět: |
Infrared
Chemistry Organic Chemistry Space group Infrared spectroscopy Crystal structure Triclinic crystal system Biochemistry Inorganic Chemistry Crystallography symbols.namesake Acidic copper crystal structure diphosphates FTIR Raman symbols Orthorhombic crystal system Fourier transform infrared spectroscopy Raman spectroscopy |
| Zdroj: | Phosphorus, sulfur, and silicon and the related elements (Online) 188 (2013): 1038–1052. doi:10.1080/10426507.2012.736096 info:cnr-pdr/source/autori:(Khalouaf R., Ennaciri A., Ezzafrani M.)a ( Capitelli F.)b/titolo:Structure and Vibrational Spectra of a New Acidic Diphosphate K2Cu(H2P2O7)2·2H2O./doi:10.1080%2F10426507.2012.736096/rivista:Phosphorus, sulfur, and silicon and the related elements (Online)/anno:2013/pagina_da:1038/pagina_a:1052/intervallo_pagine:1038–1052/volume:188 |
| ISSN: | 1563-5325 1042-6507 |
| Popis: | Crystals of the acidic diphosphate K2Cu(H2P2O7)2 · 2 H2O, dipotassium copper bis(dihydrogendiphosphate) dihydrate, obtained via two different syntheses, revealed by means of single-crystal X-ray diffraction to be polymorph within triclinic Pī (a = 6.8560(4), b = 7.3140(3), c = 7.5570(4) A; α = 81.028(4)°, β = 72.327(5)°, γ = 83.697(5)°, V = 355.86(3)A3) and orthorhombic Pnma (a = 9.8990(6), b = 10.7810(7), c = 13.4010(7) A, α = β = γ = 90°, V = 1430.17(15) A3) space groups. Both phases were analyzed by FT-IR and micro-Raman vibrational spectroscopy and interpreted using factor group analysis. No coincidences of majority of the Raman and infrared spectral bands of K2Cu(H2P2O7)2 · 2 H2O confirmed the centrosymmetric structure of these two materials. The vibrational spectra point to a bent POP bridge angle. |
| Databáze: | OpenAIRE |
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