Vibrational spectra of Cs2CaCl4·2H2O

Svonson, Filip; Šoptrajanov, Bojan; Pejov, Ljupčo; Stefov, Viktor

doi:10.1016/j.vibspec.2010.11.006

Cited by 2 publications

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“…Continuing our research in studying the vibrational spectra of aquahalogeno complexes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], in this work we report the results from the analysis of the infrared and Raman spectra of the protiated cadmiun chloride monohydrate (CdCl 2 ·H 2 O) and its deuterated analogues recorded at room temperature (RT) and at the liquid nitrogen boiling temperature (LNT). To the best of our knowledge, the IR and Raman spectra of this compound and its deuterated analogues recorded at RT and LNT have not been previously studied and reported.…”

Section: Introductionmentioning

confidence: 99%

VERY LOW H–O–H BENDING FREQUENCIES. VI. VIBRATIONAL SPECTRA OF CdCl2·H2O

Stefov¹,

Najdoski²,

Engelen³

et al. 2017

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The infrared and Raman spectra of CdCl 2 ·H 2 O as well as those of a series of its partially deuterated analogues were recorded at room and at liquid-nitrogen temperature (RT and LNT, respectively). The combined results from the analysis of the spectra were used to assign the observed bands. In the difference IR spectrum of the compound with low deuterium content (≈ 4 % D) recorded at RT, one broad bands is observed at around 2590 cm -1 while in the LNT spectrum two bands appear (at 2584 cm -1 and 2575 cm -1 ). The appearance in the LNT spectrum of these two bands which are due to the stretching OD modes of the isotopically isolated HDO molecules points to the existance of two crystallographically different hydrogen bonds and is in accordance with the structural data for this compound. In the LNT infrared and Raman spectra of the protiated compound, one band, at 1583 cm -1 , is observed in the region of the bending НОН vibrations with a frequency that is decreasing with lowering the temperature. An interesting finding related to this band is that its frequency is lower than that for the water molecule in the gas phase (1594 cm -1 ). In the RT and LNT IR spectra, only one strong band (at 560 cm -1 ) is observed in the region of the librations of water molecules (700 cm -1 -400 cm -1).

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