Infrared and Raman spectra of cubic form of magnesium caesium arsenate hexahydrate
Fourier transform infrared (FT-IR) spectra recorded at room temperature (RT) and at the boiling temperature of liquid nitrogen (LNT), as well as Raman spectra recorded at room temperature for the cubic polymorph of magnesium cesium arsenate hexahydrate (MgCsAsO4·6H2O) and its partially deuterated an...
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Society of Chemists and Technologists of Macedonia
2018-11-01
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doaj-cc6f12e3d9114732af067e71f6c82ef42021-02-25T08:35:54ZengSociety of Chemists and Technologists of MacedoniaMacedonian Journal of Chemistry and Chemical Engineering1857-55521857-56252018-11-0137219320110.20450/mjcce.2018.1477372Infrared and Raman spectra of cubic form of magnesium caesium arsenate hexahydrateViktor Stefov0Violeta Koleva1Metodija Najdoski2Adnan Cahil3Zuldjevat Abdija4Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, SkopjeInstitute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 SofiaInstitute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, SkopjePedagogical Faculty, Ss. Cyril and Methodius University, SkopjeFaculty of Natural Sciences and Mathematics, University of Tetovo, TetovoFourier transform infrared (FT-IR) spectra recorded at room temperature (RT) and at the boiling temperature of liquid nitrogen (LNT), as well as Raman spectra recorded at room temperature for the cubic polymorph of magnesium cesium arsenate hexahydrate (MgCsAsO4·6H2O) and its partially deuterated analogues, were interpreted with respect to the normal modes of the water molecules and the arsenate ions and water librations. The spectral characteristics of MgCsAsO4·6H2O were compared to the cubic form of the phosphate analogue. A spectral similarity between the two isostructural salts was established, except for the obvious differences due to the nature of the anions (AsO43– vs PO43–). The spectroscopic data for the uncoupled OD stretching mode of the matrix-isolated HDO molecules revealed that the hydrogen bonds formed in the arsenate salt were stronger than those in the phosphate. In the Raman spectrum of the protiated compound, only one very intensive band at 811 cm–1 was observed in the region of the stretching vibrations of the AsO43– ion, which was insensitive to deuteration. In accordance with the expectation, one band appeared in the same spectral range in the infrared spectra of the protiated and highly deuterated sample at 792 cm–1 and 810 cm–1, respectively, which can be attributed with certainty to the asymmetric stretching ν3(AsO4) modes.https://mjcce.org.mk/index.php/MJCCE/article/view/1477caesium magnesium arsenate hexahydratecubicinfrared spectraraman spectra difference spectrum |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Viktor Stefov Violeta Koleva Metodija Najdoski Adnan Cahil Zuldjevat Abdija |
spellingShingle |
Viktor Stefov Violeta Koleva Metodija Najdoski Adnan Cahil Zuldjevat Abdija Infrared and Raman spectra of cubic form of magnesium caesium arsenate hexahydrate Macedonian Journal of Chemistry and Chemical Engineering caesium magnesium arsenate hexahydrate cubic infrared spectra raman spectra difference spectrum |
author_facet |
Viktor Stefov Violeta Koleva Metodija Najdoski Adnan Cahil Zuldjevat Abdija |
author_sort |
Viktor Stefov |
title |
Infrared and Raman spectra of cubic form of magnesium caesium arsenate hexahydrate |
title_short |
Infrared and Raman spectra of cubic form of magnesium caesium arsenate hexahydrate |
title_full |
Infrared and Raman spectra of cubic form of magnesium caesium arsenate hexahydrate |
title_fullStr |
Infrared and Raman spectra of cubic form of magnesium caesium arsenate hexahydrate |
title_full_unstemmed |
Infrared and Raman spectra of cubic form of magnesium caesium arsenate hexahydrate |
title_sort |
infrared and raman spectra of cubic form of magnesium caesium arsenate hexahydrate |
publisher |
Society of Chemists and Technologists of Macedonia |
series |
Macedonian Journal of Chemistry and Chemical Engineering |
issn |
1857-5552 1857-5625 |
publishDate |
2018-11-01 |
description |
Fourier transform infrared (FT-IR) spectra recorded at room temperature (RT) and at the boiling temperature of liquid nitrogen (LNT), as well as Raman spectra recorded at room temperature for the cubic polymorph of magnesium cesium arsenate hexahydrate (MgCsAsO4·6H2O) and its partially deuterated analogues, were interpreted with respect to the normal modes of the water molecules and the arsenate ions and water librations. The spectral characteristics of MgCsAsO4·6H2O were compared to the cubic form of the phosphate analogue. A spectral similarity between the two isostructural salts was established, except for the obvious differences due to the nature of the anions (AsO43– vs PO43–). The spectroscopic data for the uncoupled OD stretching mode of the matrix-isolated HDO molecules revealed that the hydrogen bonds formed in the arsenate salt were stronger than those in the phosphate. In the Raman spectrum of the protiated compound, only one very intensive band at 811 cm–1 was observed in the region of the stretching vibrations of the AsO43– ion, which was insensitive to deuteration. In accordance with the expectation, one band appeared in the same spectral range in the infrared spectra of the protiated and highly deuterated sample at 792 cm–1 and 810 cm–1, respectively, which can be attributed with certainty to the asymmetric stretching ν3(AsO4) modes. |
topic |
caesium magnesium arsenate hexahydrate cubic infrared spectra raman spectra difference spectrum |
url |
https://mjcce.org.mk/index.php/MJCCE/article/view/1477 |
work_keys_str_mv |
AT viktorstefov infraredandramanspectraofcubicformofmagnesiumcaesiumarsenatehexahydrate AT violetakoleva infraredandramanspectraofcubicformofmagnesiumcaesiumarsenatehexahydrate AT metodijanajdoski infraredandramanspectraofcubicformofmagnesiumcaesiumarsenatehexahydrate AT adnancahil infraredandramanspectraofcubicformofmagnesiumcaesiumarsenatehexahydrate AT zuldjevatabdija infraredandramanspectraofcubicformofmagnesiumcaesiumarsenatehexahydrate |
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1724251902913282048 |