2015
DOI: 10.20450/mjcce.2015.675
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Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alums

Abstract: A survey is given for the crystallographic and vibrational spectroscopic results of a number of alums. From both types of results (structural and spectroscopic) it is positively known that the sulfate α-alums exhibit orientational disorder of the sulfate anions along the threefold symmetry axis. Both IR and Raman spectra confirm the finding for sulfate disorder in KAl(SO 4 ) 2 ·12H 2 O. Only the Raman spectra show clearly that the sulfate anions in many K, Tl and Rb are indeed disordered, in excellent agreemen… Show more

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Cited by 3 publications
(4 citation statements)
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References 73 publications
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“…Al 3+ ), and the six water molecules are located at the octahedral vertex surrounding Na + , as shown in Fig. S19 † 53,54 . The water molecules of the α-alum and β-alum exist in a crown configuration and a plane, respectively.…”
Section: Resultsmentioning
confidence: 99%
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“…Al 3+ ), and the six water molecules are located at the octahedral vertex surrounding Na + , as shown in Fig. S19 † 53,54 . The water molecules of the α-alum and β-alum exist in a crown configuration and a plane, respectively.…”
Section: Resultsmentioning
confidence: 99%
“…S19. † 53,54 The water molecules of the a-alum and ß-alum exist in a crown conguration and a plane, respectively. 53,54 Other Al-based electrolytes can obtain a wide ESW and high ionic conductivity.…”
Section: Extension Of the 'Poly(ion-water Ligand) Network' Concept To...mentioning
confidence: 99%
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“…Gu and Hao [16] studied the electrolytic coloration below 273 K and spectral representation properties of ammonium alum crystals with the help of a pointed anode. Petrusevski [17] studied the vibrational spectra and crystallographic results in a number of alums. Abdeen et al [18] studied the X-ray and neutron diffraction in ferroelectric alum compounds.…”
Section: Introductionmentioning
confidence: 99%