A Raman spectroscopic study of single crystals of NaH2PO4 · 2H2O and NaD2PO4 · 2D2O

Toupry-Krauzman, N.; Poulet, H.; Postollec, M. Le

doi:10.1002/jrs.1250080210

Cited by 23 publications

(14 citation statements)

References 4 publications

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“…The position of the bands for the disodium hydrogen phosphate is very dependent on the waters of hydration. There have been several Raman spectroscopic studies of the monosodium dihydrogen phosphate chemicals [33][34][35][36][37].…”

Section: Vibrational Spectroscopy Backgroundmentioning

confidence: 99%

Raman, infrared and near-infrared spectroscopic characterization of the herderite–hydroxylherderite mineral series

Frost

Scholz

López

et al. 2014

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Natural single-crystal specimens of the herderite-hydroxylherderite series from Brazil, with general formula CaBePO4(F,OH), were investigated by electron microprobe, Raman, infrared and near-infrared spectroscopies. The minerals occur as secondary products in granitic pegmatites. Herderite and hydroxylherderite minerals show extensive solid solution formation. The Raman spectra of hydroxylherderite are characterized by bands at around 985 and 998 cm(-1), assigned to ν1 symmetric stretching mode of the HOPO3(3-) and PO4(3-) units. Raman bands at around 1085, 1128 and 1138 cm(-1) are attributed to both the HOP and PO antisymmetric stretching vibrations. The set of Raman bands observed at 563, 568, 577, 598, 616 and 633 cm(-1) are assigned to the ν4 out of plane bending modes of the PO4 and H2PO4 units. The OH Raman stretching vibrations of hydroxylherderite were observed ranging from 3626 cm(-1) to 3609 cm(-1). The infrared stretching vibrations of hydroxylherderites were observed between 3606 cm(-1) and 3599 cm(-1). By using a Libowitzky type function, hydrogen bond distances based upon the OH stretching bands were calculated. Characteristic NIR bands at around 6961 and 7054 cm(-1) were assigned to the first overtone of the fundamental, whilst NIR bands at 10,194 and 10,329 cm(-1) are assigned to the second overtone of the fundamental OH stretching vibration. Insight into the structure of the herderite-hydroxylherderite series is assessed by vibrational spectroscopy.

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Section: Vibrational Spectroscopy Backgroundmentioning

confidence: 99%

Raman, infrared and near-infrared spectroscopic characterization of the herderite–hydroxylherderite mineral series

Frost

Scholz

López

et al. 2014

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…There is a strong band at 910 cm À1 that is a fingerprint of the m 1 (PO 4 3À ) mode corresponding to the symmetric stretching mode of the phosphate ions. 15 The triply degenerate antisymmetric stretching modes split up and appear at 944 and 991 cm À1 . The vibrational mode associated with triply degenerate m 4 (PO 4 3À ) appears as bands at 449, 480, and 526 cm À1 .…”

Section: Ref 12)mentioning

confidence: 99%

“…Two acidic hydrogens of H 2 PO 4 À form strong hydrogen bonds with the adjacent oxygen of H 2 PO 4 À , and the water molecules are weakly bonded in the structure. 14,15 According to factor group analysis for sodium dihydrogen phosphate dihydrate, 15 there are a total of 168 normal modes of vibration with 42 in each symmetry class mode: A, B 1 , B 2 , and B 3 . Three of these modes (i.e., 1B 1 , 1B 2 , and 1B 3 ) are acoustic modes and not active in the Raman spectrum.…”

Section: Ref 12)mentioning

confidence: 99%

Remote Pulsed Raman Spectroscopy of Inorganic and Organic Materials to a Radial Distance of 100 Meters

et al. 2006

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A portable pulsed remote Raman spectroscopy system has been fabricated and tested to 100 m radial distance. The remote Raman system is based on a directly coupled f/2.2 spectrograph with a small (125 mm diameter) telescope and a frequency-doubled Nd:YAG pulsed laser (20 Hz, 532 nm, 25 mJ/pulse) used as the excitation source in a co-axial geometry. The performance of the Raman system is demonstrated by measuring the gated Raman spectra of calcite, sodium phosphate, acetone, and naphthalene. Raman spectra of these materials were recorded with the 532 nm pulsed laser excitation and accumulating the spectra with 600 laser shots (30 s integration time) at 100 m with good signal-to-background ratio. The remote pulsed Raman system can be used for remotely identifying both inorganic and organic materials during daytime or nighttime. The system will be useful for terrestrial applications such as monitoring environmental pollution and for detecting minerals and organic materials such as polycyclic aromatic hydrocarbons (PAHs) on planetary surfaces such as Mars.

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Section: Vibrational Spectroscopy Backgroundmentioning

confidence: 99%

A vibrational spectroscopic study of the phosphate mineral whiteite CaMn++Mg2Al2(PO4)4(OH)2·8(H2O)

Frost

Scholz

López

et al. 2014

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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A Raman spectroscopic study of single crystals of NaH₂PO₄ · 2H₂O and NaD₂PO₄ · 2D₂O

Cited by 23 publications

References 4 publications

Raman, infrared and near-infrared spectroscopic characterization of the herderite–hydroxylherderite mineral series

Raman, infrared and near-infrared spectroscopic characterization of the herderite–hydroxylherderite mineral series

Remote Pulsed Raman Spectroscopy of Inorganic and Organic Materials to a Radial Distance of 100 Meters

A vibrational spectroscopic study of the phosphate mineral whiteite CaMn++Mg2Al2(PO4)4(OH)2·8(H2O)

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