Librational modes of the water molecules in barium and strontium halide monohydrates, MX2 · 1H2O (M = Ba, Sr; X = Cl, Br, I)

Lutz, H. D.; Christian, H.

doi:10.1016/0022-2860(83)85013-3

Cited by 36 publications

(3 citation statements)

References 16 publications

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“…The wave numbers of bands originating from scissoring deformation type of vibrations of water molecule are observed at 1614 cm -1 , 1607 cm -1 and 1589 cm -1 in IR spectrum and at 1605cm -1 , 1600 cm -1 and 1598 cm -1 in Raman spectrum for LVPT, LLPT and LIPT respectively. These modes occur in the range of 600cm -1 can be assigned to wagging vibrations of water molecules and is sufficiently described in the literature [11]. Hence, the vibrational bands at 567 cm -1 both in IR and Raman spectrum of LVPT, the bands at 560 cm -1 in the IR spectrum and at 569 cm -1 in Raman spectrum of LLPT, the band at 577 cm -1 in IR spectrum and at 575 cm -1 in Raman spectrum are assigned to wagging vibrations of H2O molecule.…”

Section: Vibrations Of Oh and H2o Groupmentioning

confidence: 84%

Vibrational Spectroscopic Studies of Amino acid p-toluenesulfonic acid NLO Crystals

Suresh¹

2023

IJSREM

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In the present work, a comparative study on the vibrational spectrums recorded on some newly synthesized amino acid p- toluenesulfonic acid NLO crystals are discussed. Infrared spectral measurements of all the grown crystals were made in the range of 4000–400 cm-1 using Jasco Spectrometer FT-Raman spectra of the grown crystals were recorded in the BRUKER RFS 27, Stand alone FT-Raman Spectrometer in the range of 4000 – 400 cm-1 The Nd: YAG laser source was operated at 1064 nm. FT-IR and FT-Raman spectral analyses shows the different functional groups present in the studied compounds. Its intensities and positions are analyzed. The high intensity vibrational bands observed around 2950 cm-1 which is assigned to N- H...O vibrations shows the influence of hydrogen bonds in the analyzed compounds. Keywords: NLO crystal, Organic single crystal, FTIR, FTRAMAN.

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Section: Vibrations Of Oh and H2o Groupmentioning

confidence: 84%

Vibrational Spectroscopic Studies of Amino acid p-toluenesulfonic acid NLO Crystals

Suresh¹

2023

IJSREM

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“…This could mean that it is a result of a twisting not a wagging mode. Namely, it is assumed that in Raman spectra the band from the twisting mode would be with highest intensity [27]. However, since the symmetry of the water molecules is low, it is reasonable to assume that their librational modes are more or less mixed.…”

Section: External Vibrations Of the Water Moleculesmentioning

confidence: 99%

Vibrational spectra of Cs2CaCl4·2H2O

Svonson

Šoptrajanov

Pejov

et al. 2011

Vibrational Spectroscopy

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“…[30] and [35]). However, since we have studied the infrared spectra in the region only down to 400 cm -1 , such bands could not be observed in our infrared spectra.…”

Section: External Vibrations Of Water Moleculesmentioning

confidence: 99%

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

Stefov¹,

Najdoski²,

Engelen³

et al. 2017

Contributions

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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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Librational modes of the water molecules in barium and strontium halide monohydrates, MX2 · 1H2O (M = Ba, Sr; X = Cl, Br, I)

Cited by 36 publications

References 16 publications

Vibrational Spectroscopic Studies of Amino acid p-toluenesulfonic acid NLO Crystals

Vibrational Spectroscopic Studies of Amino acid p-toluenesulfonic acid NLO Crystals

Vibrational spectra of Cs2CaCl4·2H2O

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

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